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    WiFi & Fibre Speed Test South Africa

    Run a free WiFi, fibre, LTE or 5G speed test against South African servers in seconds. Measure download, upload, ping, jitter and packet loss — plus see what your line can really handle for streaming, gaming and video calls.

    View All 7 Tools

    Free · No signup · Runs in your browser

    01002003004005006007008009001000South Africa median: 68.1 MbpsSAGlobal median: 109.3 MbpsWORLD0.00READY
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    SA median 68.1 MbpsWorld median 109.3 Mbps(Ookla Speedtest Global Index, March 2026)

    Powered by @cloudflare/speedtest engine

    Laptop screen showing a glowing speed test dial
    OpenSpeedTest widget

    Test the Connection

    First up is OpenSpeedTest - a really remarkable little gadget. It's open in the truest sense (free to share, free to embed, as on this page). Beyond download and upload, it reports ping and jitter, the location of the test server, the carrier, and a saved link to the result.

    Provided by OpenSpeedTest.com. Automatically tests the speed of the fibre connection.

    Download
    How fast data arrives, in Mbps
    Upload
    How fast data is sent, in Mbps
    Ping
    Round-trip latency, in ms
    Jitter
    Stability of the line, in ms

    Want to speed up the connection? Compare the latest fibre deals.

    Fibre Deals 2026
    By fibre network

    Speed Test by Fibre Network

    Different fibre networks route traffic differently, so it's worth running the speed test against a server on your own network for the truest reading. Here's how to test on each of South Africa's main fibre networks.

    Vumatel (Vuma) Speed Test

    Vumatel is South Africa's largest open-access fibre network. To test a Vuma line accurately, choose a Cape Town or Johannesburg server in Ookla and run the test wired to the router.

    Run speed test ↑

    Openserve Speed Test

    Openserve is the wholesale fibre arm of Telkom. The Openserve-SAIX server in Ookla gives the most representative result on an Openserve line.

    Run speed test ↑

    Frogfoot Speed Test

    Frogfoot operates one of the country's fastest-growing fibre networks. Test against a Cape Town or Johannesburg server for the closest match to real-world performance.

    Run speed test ↑

    Octotel Speed Test

    Octotel is the dominant fibre network across Cape Town's southern suburbs and Atlantic seaboard. Choose a Cape Town server when testing for the lowest latency.

    Run speed test ↑

    MetroFibre Speed Test

    MetroFibre runs across Gauteng and parts of the Western Cape. Test wired to the router and against a Johannesburg server for an accurate MetroFibre reading.

    Run speed test ↑

    Telkom Fibre Speed Test

    Telkom resells fibre across Openserve, MetroFibre and Frogfoot. Use the Openserve-SAIX server in Ookla for the most representative result on a Telkom fibre package.

    Run speed test ↑

    Looking for the package that delivers these speeds? Compare fibre deals from every major South African ISP or check fibre coverage at your address.

    Why bother

    Why Test the Speed of the Connection?

    Running a speed test reveals how fast the connection is performing for fibre, ADSL, WiFi, LTE, 3G, 4G or 5G. This page covers seven different speed-testing tools - Ookla, OpenSpeedTest, Speedof.me, MyBroadband Speed Test, Speedtest.co.za, Fast.com and Speed Test Master - together with everything to know about what speed tests are, how they work, and what the average download, upload and latency numbers look like across South Africa.

    Identify connection issues

    If the speed test result is significantly lower than the package speed, the line itself probably has a problem - a faulty ONT, a damaged splice, peak-hour congestion or a fault somewhere upstream at the network operator.

    Verify what's being paid for

    A consistent shortfall between paid speed and delivered speed is the customer's leverage. A few weeks of evidence makes it easy to negotiate a credit, a downgrade or a switch to a more honest ISP.

    Diagnose slow speeds

    Slow internet has dozens of possible causes. The speed test isolates the line itself from the device, the WiFi, the browser and the application - making it the first piece of evidence in any troubleshooting session.

    Test the home network

    Speed-testing from different rooms, on different devices and at different times reveals weak WiFi spots, dying mesh nodes and overloaded smart-home setups long before the household notices the symptoms.

    Troubleshoot specific apps

    If Zoom keeps dropping but the speed test is fine, the problem isn't the line - it's the application or the platform. The speed test is the single fastest way to rule the line in or out as the cause.

    Benchmark before upgrading

    Knowing the current real-world speed makes the case for upgrading obvious. A 50 Mbps line struggling under five users will jump to comfortable on 200 Mbps - and the speed test before and after proves it.

    The basics

    What Exactly is a Speed Test?

    An internet speed test is a method of determining how fast a connection is. It measures the user's ping (or latency) - the length of time it takes for a small data package to travel from the device (PC, laptop or phone) to a server on the internet and back again - together with the download and upload rates.

    Measuring both download and upload is critical, because most ISPs make distinct performance claims for each direction. The download speed is usually the headline number, but a closer look at the package always reveals a lower upload speed for each tier. A 100/50 Mbps line, for example, will download at 100 Mbps and upload at 50 Mbps.

    When the speed test runs, four distinct things happen behind the scenes - and understanding each of them helps make sense of the result on screen.

    STEP 01

    Calculate location & nearest server

    The client first calculates the user's location and then the closest test server - a critical step, because distance to the server has a direct impact on latency. Some testers, like Ookla, allow the server to be changed manually. Choose Cape Town, for example, and a list of Frogfoot, Openserve and other local servers appears.

    STEP 02

    Send a signal (the ping)

    Once the test server has been selected, the client sends a small signal - the ping - to the server, which immediately answers. The round-trip time is recorded in milliseconds and reported as the latency reading.

    STEP 03

    Run the download test

    The download test starts as soon as the ping completes. The client opens several connections to the server and downloads a modest amount of data, measuring how long it takes and how much of the network is being used. If there's spare capacity, more connections are opened and more data is pulled - the goal is to push the line right up to its real ceiling. The total volume downloaded in the time allowed becomes the reported download speed.

    STEP 04

    Run the upload test

    The upload test runs in reverse. The client pushes data from the device up to the server, opens parallel connections in the same way, and measures the maximum sustained throughput. Most fibre packages are asymmetric - a 100/50 Mbps line will return 100 down and 50 up - so don't be alarmed if the upload number is lower.

    Match speed to use

    How Much Speed Does the Household Need?

    A rough guide to matching usage with the right fibre package. Add roughly 10 Mbps for every additional active person in the home, and a little more for any 4K streamers or competitive gamers.

    Use case
    Recommended speed
    Email & web browsing
    1–5 Mbps
    HD video streaming (Netflix, Showmax, Amazon Prime)
    5–15 Mbps
    4K streaming + casual online gaming
    25–50 Mbps
    Multi-person household, work-from-home, video calls
    100–200 Mbps
    Heavy gaming, large file transfers, 4K everywhere
    200–500 Mbps
    Power users, content creators, smart-home households
    500 Mbps – 1 Gbps
    Smartphone running a speed test in a cafe
    Seven testers

    Network, WiFi and Fibre Speed Test — All in One Place

    No single tool tells the whole story. Each tester uses a slightly different methodology, a different set of servers and different overhead, so running two or three across different tools delivers a much truer average than any one result alone. Be aware that speeds will vary; a re-test five minutes later will land a slightly different number, and that's normal.

    Ookla Speedtest

    The global gold standard. Speedtest.net - commonly known as Speedtest by Ookla - analyses an internet connection's data throughput and latency for free against one of around 11,000 geographically scattered servers. Over 21 billion tests have been completed on the platform, making it the most data-rich speed-testing service in the world.

    • 11,000+ test servers worldwide
    • Reports download, upload, jitter and packet loss
    • Measures ping at three intervals: idle, download and upload
    • Real-time graphs of connection reliability
    • Mobile carrier coverage maps
    • Server can be chosen anywhere on the globe
    • Full test history and shareable result links
    Ookla may collect identifying information (IP address, device identifiers, geolocation) when a test is run. The data is shared with ISPs, gear manufacturers and regulators to improve the internet - Ookla's privacy policy is worth a read before testing.

    OpenSpeedTest

    An open-source HTML5 speed test that runs entirely inside any modern browser. There's no app, no plugin and no Flash - just hit the button and watch download, upload, ping and jitter resolve in real time. The same widget is embedded at the top of this page.

    • Embeddable on any website (as on this page)
    • Reports download, upload, ping and jitter
    • Shows the test server location and carrier
    • Saved, shareable result link
    • Works on any HTML5-capable browser

    Speedof.me

    Built end-to-end in HTML5 - the same technology every modern browser already runs - rather than the heavier Java or Flash some older speed tests still rely on. The result is a tester that uses fewer system resources and gives a noticeably more accurate reading on slower lines, where browser overhead can otherwise drown out the result.

    • Pure HTML5 - no Java, no Flash
    • Low CPU and memory overhead
    • Live throughput graph
    • Particularly accurate on slower connections

    MyBroadband Speed Test

    South Africa's local favourite, run by MyBroadband. The interface is deliberately simple - ping, download, upload - but the test is anchored against South African servers, so the latency reading is closer to the real-world experience of an SA user than a tester reaching out to Europe or the US would deliver.

    • South African test servers
    • Captures the result and lets users rate their ISP
    • Easy copy-and-share result link
    • Quick, no-frills interface

    Speedtest.co.za

    A close cousin of MyBroadband's tester, also South African. Reports ping in milliseconds together with download and upload speed, and adds a useful consistency graph that shows how steady the throughput was during the test - invaluable for spotting an unstable line.

    • Consistency graph during the test
    • Captures IP and ISP
    • Option to rate the ISP
    • Sharable result links

    Fast.com

    Netflix's no-frills tester. The page loads, the test runs automatically, and a single number appears: the download speed. Because Fast.com runs against Netflix's own CDN, it's the truest measure of how well a connection will stream Netflix in particular - but it doesn't show upload, ping or jitter unless the user clicks the 'Show more info' button.

    • Auto-runs on page load
    • Streaming-focused (uses Netflix CDN)
    • Zero clutter, no ads
    • Optional upload, ping and jitter detail

    Speed Test Master

    A mobile-first speed tester that's just as comfortable on WiFi as it is on 2G, 3G, 4G, 5G, DSL or ADSL. One tap returns a reliable result in under 30 seconds, which makes it the tester of choice for anyone diagnosing a flaky cellular signal in the back garden.

    • Mobile-friendly interface
    • Tests WiFi, cellular and fixed-line
    • Sub-30 second results
    • One-tap operation
    Methodology

    Getting Accurate Results

    Speed tests are easy to mess up. Internet speed varies by time of day and by location, so it pays to test at several points across the day and from several spots in the home. Mind the units, too: most testers report Mbps for throughput and ms for ping and jitter. Convert if necessary, so the comparison is genuinely apples to apples.

    1

    Use a wired connection

    Wireless connections suffer from interference, walls, neighbours' WiFi and the laptop's own radio. For an accurate reading, plug straight into the router with a Cat5e or Cat6 Ethernet cable.

    2

    Close other applications

    Background downloads, cloud sync, streaming tabs and even open browser tabs eat into the available bandwidth. Close everything before the test runs.

    3

    Pick a nearby test server

    The further the test server, the worse the latency reading and the lower the throughput will appear. Choose a Cape Town or Johannesburg server for any SA-based test.

    4

    Test at different times of day

    Speeds vary with congestion. A line that hits 200 Mbps at 6am may dip to 80 Mbps at 8pm. Run tests in the morning, afternoon and evening to see the real picture.

    5

    Use multiple testers

    Ookla, OpenSpeedTest, Fast.com and the others all measure slightly differently. Three readings across three tools give a much more reliable average than any single result.

    6

    Use a recent device

    An old phone or budget laptop with a slow CPU can bottleneck a 1 Gbps line long before the line itself does. Test from a modern device with at least a quad-core processor.

    7

    Use a fast browser

    Browsers vary in how efficiently they handle the JavaScript or HTML5 of a speed test. A current build of Chrome, Edge, Firefox or Safari will give the truest reading.

    8

    Strong WiFi signal

    If wired isn't possible, sit next to the router. A weak signal will give weak results - and it's the WiFi at fault, not the line.

    9

    Stick to reputable testers

    There are hundreds of obscure speed test sites, many of them ad-laden or worse. Stick to the seven tools recommended on this page.

    10

    Test multiple devices

    Run the test from a phone, a laptop and a desktop. Big differences between devices point to the device - not the line - being the bottleneck.

    The single biggest tip: use a cable

    Roughly 80% of "slow internet" complaints come down to WiFi - not the line itself. Plugging a laptop directly into the router with a R50 Ethernet cable will immediately show whether the fibre is doing its job. If the wired test hits the advertised speed, the line is fine and the WiFi is the bottleneck - which is a very different (and cheaper) problem to fix.

    Fibre essentials

    What to Know About Fibre & Fibre Speed

    Before reading the speed test result, it helps to understand the connection itself. Here are the thirteen things every South African fibre customer should know - pulled together in concise, scannable info boxes.

    Fibre has two parts

    The fibre network operator (Vumatel, Openserve, Frogfoot, Octotel, etc.) installs and owns the cables in the ground. The Internet Service Provider (ISP) - Webafrica, Afrihost, Cool Ideas, Vox and others - sells the package on top.

    The network can't be chosen

    Whichever fibre network reached the property first is the one that's available. The ISP, however, is entirely the customer's choice - and that's where the price competition happens.

    Test from a wired connection

    For a meaningful reading, the device needs to be plugged into the router with an Ethernet cable. WiFi will mask the true line speed every time.

    Use a fibre coverage map

    Coverage maps from each network show, street by street, where fibre is live. Enter the address as precisely as possible - coverage often differs house by house on the edges of newly rolled-out areas.

    Prices vary by network

    The fibre network sets most of the wholesale cost, which is why the same ISP often charges different amounts for the same speed on Vumatel, Openserve or Frogfoot.

    5 Mbps streams HD

    Netflix, Showmax and Amazon Prime stream HD comfortably on around 5 Mbps. Add 5–10 Mbps per additional active person for a smooth household experience.

    Openserve is owned by Telkom

    Openserve is the wholesale fibre arm of the Telkom group. Many ISPs - including Telkom itself - resell Openserve packages.

    Installation: 3–10 days

    Standard fibre installation takes between 3 and 10 working days and costs R1,000–R2,500. Most ISPs waive the fee on a 24-month contract.

    Fibre beats WiFi & LTE

    Fibre is a dedicated physical line - it doesn't share radio waves with neighbours, isn't affected by tower congestion and isn't dimmed by weather. It's faster, more reliable and lower-latency.

    Best ISPs in 2026

    Webafrica, Afrihost, Cool Ideas, Vox and RSAWEB consistently top the user-rating tables for service, support and value.

    Down vs up

    Download speed matters most for streaming and browsing; upload matters for video calls, cloud backups, gaming and content creation. Both should be considered when picking a package.

    Switching is easy

    To change ISP, sign up with the new provider, schedule the activation, then cancel the old one for the day after. The fibre line stays - only the ISP behind it changes.

    Great for gaming

    Low latency, low jitter and high upload make fibre the best possible connection for online gaming. A wired connection from PC or console to the router is essential for competitive play.

    Before testing

    What to Do Before Running a Speed Test

    For an honest result, the test needs honest conditions. Three quick checks before hitting the Start button make the difference between a meaningful result and a noisy one.

    1

    Close everything that uses bandwidth

    Streaming tabs, cloud sync, OS updates, queued downloads - pause them all. A single Netflix tab in 4K will shave 25 Mbps off the result.

    2

    Pause queued downloads

    Game launchers like Steam, Epic and the PlayStation Store happily eat the entire line during downloads. Pause anything that's mid-flight before testing.

    3

    Disconnect other devices

    Smart TVs, security cameras, smart speakers and the kids' iPads all draw bandwidth. The fewer active devices on the network, the truer the reading.

    A note on accuracy: speed tests aren't perfect, but they offer valuable insights. They make it easy to assess whether the connection's real speed lines up with what the household needs. Typically the speed shown will be slightly lower than the ISP's advertised number, influenced by line quality, current network traffic, the device used, and a hundred other small variables. That's normal. A consistent shortfall of 20% or more, however, is worth raising with the ISP.

    Liquid magenta light flowing across a dark surface

    Still Not Happy With the Result?

    If the speed test has been run carefully - wired, no other apps, three readings, three testers - and the result still falls short, the package itself is probably the bottleneck. It's time to look at upgrading.

    View All Fibre Plans
    The numbers

    Average Internet Speed in South Africa

    Ookla is a global leader in speed testing. According to its data, the average download speed in South Africa is 58.59 Mbps on mobile and 63.77 Mbps on fixed broadband. Upload tells a more dramatic story: 11.95 Mbps on mobile against 50.97 Mbps on fixed broadband. The optimal combination is high speed plus low latency - anything below 150 ms ping is decent, and 20 ms is excellent.

    63.77 Mbps
    SA average fixed broadband download
    50.97 Mbps
    SA average fixed broadband upload
    58.59 Mbps
    SA average mobile download
    11.95 Mbps
    SA average mobile upload

    South Africa on the world stage

    Earlier Ookla Speedtest Global Index data placed South Africa at 23.78 Mbps download and 8.61 Mbps upload - 82nd globally for download and 83rd for upload. The fixed broadband number has since climbed dramatically, driven almost entirely by aggressive fibre rollout from Vumatel, Openserve, Frogfoot, Octotel, MetroFibre and others. The networks now collectively pass over 4 million homes.

    A few factors still hold the country back. High-speed broadband infrastructure isn't evenly available - many rural and peri-urban areas still rely on LTE or fixed wireless. The cost of internet service in South Africa remains higher than in many comparable markets. And distance from the nearest exchange, the underlying technology and the number of users on a particular network all create big regional differences.

    On the positive side, the rollout of fibre, the launch of new satellite services (Starlink and OneWeb), and rising competition in the telecoms market are all pushing speeds up and prices down. The gigabit packages that cost R3,000 a month in 2020 now sit comfortably under R1,500.

    Global comparison

    Speed Tests Globally

    According to Ookla's Speedtest Global Index, the world's fastest fixed-broadband countries cluster in Asia and northern Europe. The top five all post download speeds well above 140 Mbps, supported by widespread fibre rollout, competitive ISP markets and aggressive adoption of advanced technologies.

    #
    Country
    Download
    Upload
    1st
    Singapore
    190.61 Mbps
    89.17 Mbps
    2nd
    South Korea
    172.34 Mbps
    89.98 Mbps
    3rd
    Taiwan
    172.27 Mbps
    71.60 Mbps
    4th
    Sweden
    150.73 Mbps
    72.06 Mbps
    5th
    Denmark
    142.73 Mbps
    73.50 Mbps
    -
    South AfricaSA
    63.77 Mbps
    50.97 Mbps

    Source: Ookla Speedtest Global Index, latest published data.

    Cable league table

    Fastest & Slowest Internet in the World

    Cable's worldwide league table draws on more than 1.1 billion speed tests across 224 countries. At one extreme, Turkmenistan posts an average of 0.50 Mbps - slow by any modern standard, but still ten times faster than 1990s dial-up. At the other extreme, Jersey, Liechtenstein, Iceland, Andorra and Gibraltar take the top five spots, all powered by extensive fibre infrastructure and tightly competitive ISP markets.

    Fastest in the world

    1Jersey
    274.27 Mbps
    2Liechtenstein
    211.26 Mbps
    3Iceland
    191.83 Mbps
    4Andorra
    164.66 Mbps
    5Gibraltar
    151.34 Mbps

    Slowest in the world

    Turkmenistan
    0.50 Mbps
    Even the world's slowest country is still 10× faster than 1990s dial-up.
    Abstract magenta and cyan light streaks
    Telkom & Openserve

    How to Check Telkom Fibre Speed

    Telkom is a major South African telecoms provider that offers its own fibre packages and resells fibre on partner networks including Openserve, MetroFibre, Frogfoot and others. Reselling lets Telkom offer a wider range of speeds and prices to customers, but it's worth noting: while Telkom may sell the package, the actual fibre service is provided by the partner network. Faults on the line are routed through the underlying network, not Telkom retail.

    1

    Plug in

    Connect the device to the Telkom router with an Ethernet cable. WiFi will distort the result.

    2

    Open a tester

    Visit Ookla, Google Internet Speed Test, Fast.com - or use the dedicated Openserve Ookla widget on the Telkom-SAIX server for the most representative result.

    3

    Run the test

    Hit Start and wait 20–30 seconds. Download and upload speeds appear, alongside ping and (on some tools) jitter.

    4

    Read the result

    Compare against the package speed. Anything within 10% of the advertised rate is normal. A consistent shortfall is worth raising with the ISP.

    Under the bonnet

    How Do Speed Tests Work?

    At its simplest, a speed test pushes a known volume of data across the connection and times how long it takes. Multiply that by enough parallel connections to saturate the line, and the result is the maximum sustained throughput the connection can manage at that exact moment.

    The cleverness sits in the methodology. Modern testers like Ookla open multiple TCP connections in parallel, ramp up the data volume as the line responds, and discard the slowest and fastest reads to land on a stable middle reading. Ping is measured by firing a small packet at the server and timing the round trip; jitter is the variance between successive pings; packet loss is the percentage of packets that simply never arrive.

    The reason no two tests ever match exactly is that every variable - server choice, browser overhead, background processes, the path the packets take across the public internet - shifts every time. That's why the rule of thumb is to run a test three times across two different testers and take the average. The result is a much more honest picture of the line's real performance than any single reading could deliver.

    Glossary

    Speed Test Terminology

    Every term that pops up in a speed test result, explained in plain English.

    Download speed is the maximum quantity of information a computer or device can receive from the internet in a single second, measured in megabits per second (Mbps). It governs how quickly pages load, how smoothly video streams, how fast files arrive and how responsive cloud services feel.

    Upload speed is the maximum quantity of information a computer or device can transfer to the internet in a single second, also measured in megabits per second (Mbps). It matters for video calls, cloud backups, online gaming, sending large attachments and live streaming. South African fibre packages tend to be asymmetric, with upload roughly half of download.

    Ping and latency are sometimes used synonymously, although their precise definitions differ. In a speed test, both refer to how soon a response is received after sending a request across a network. Ping rates and latency are influenced by packet size, packet loss and jitter. A ping under 30 ms is excellent for gaming; anything under 150 ms is acceptable for general use.

    Jitter measures the variation in ping over time, in milliseconds. A stable connection has low jitter (under 10 ms). High jitter causes glitchy video calls, voice cut-outs and rubber-banding in online games - even when raw speed looks healthy. It's caused by congestion, interference or queuing delays at network nodes, and is best controlled with quality-of-service (QoS) settings on the router.

    Packet loss occurs when data packets fail to arrive at their destination after being transmitted across a network. The result is reduced effective speed and rising latency, because dropped packets must be re-sent. Anything above 1–2% packet loss will cause stuttering on calls, lag spikes in games and slower-than-expected downloads.

    Mbps is short for 'megabits per second' - the unit ISPs use to advertise their packages. One megabit (Mb) is one million bits, and a bit is the smallest unit of digital data (a single zero or one in binary). To convert Mbps to megabytes per second (MB/s) - the unit most download managers display - divide by 8. A 100 Mbps line therefore downloads at roughly 12.5 MB/s.

    Bandwidth is the maximum capacity of an internet connection - the total amount of data it can carry per second. Speed, by contrast, is how much of that bandwidth is actually being used at a given moment. A 100 Mbps line has 100 Mbps of bandwidth; the speed test reports how close to that ceiling the line is currently running.

    A router is the device that connects every device on a home or office network to the internet. It acts as a gateway, sharing the single internet connection across multiple devices, creating a local area network (LAN) so devices can talk to each other, providing a firewall, performing network address translation (NAT) and - on most modern units - broadcasting WiFi. A WiFi 6 or WiFi 6E router will comfortably handle a smart-home household with dozens of connected devices.

    A modem converts the signals used by computers into the signals used by the underlying network, and back again. On copper or cable internet that means converting between digital and analogue. On fibre the equivalent device is the ONT (Optical Network Terminal), which converts the light signal coming down the fibre cable into an electrical signal the router can use. Many ISP-supplied units combine the ONT and the router into one box.

    A modem (or ONT on fibre) talks to the ISP. A router talks to the devices on the home network. The modem turns the ISP's signal into something the router can use; the router shares that signal with every device, manages the LAN, runs the firewall and broadcasts WiFi. In most modern home setups, a single ISP-supplied unit performs both jobs.

    A Domain Name System (DNS) server translates human-readable website names like fastestfibre.co.za into the numerical IP addresses computers actually use. Every time a website is visited, a DNS lookup happens in the background. A slow DNS server makes the whole internet feel sluggish even on a fast line. Most ISPs run their own DNS, but third-party options like Google Public DNS (8.8.8.8) or Cloudflare (1.1.1.1) are often faster and more privacy-friendly.

    A wired connection uses a physical cable - most commonly Ethernet, or fibre optic for the ISP-side connection - to transmit data. Ethernet is the standard for connecting devices to a router and uses an RJ-45 connector. Wired connections are faster, more stable and far less prone to interference than wireless, which is why every speed test guide recommends them.

    A wireless connection uses radio waves to move data between devices. WiFi covers the home, cellular (3G, 4G, 5G) covers the city, and satellite (Starlink, OneWeb) covers everything else. Wireless is convenient and flexible but inherently more variable than a cable, because every wall, neighbour's network and microwave oven can degrade the signal.
    Detailed FAQs

    Speed Test FAQ

    The questions South African fibre shoppers ask most often - grouped by topic so the right answer is one tap away.

    Internet speed is the rate at which data is transmitted across the internet, measured in megabits per second (Mbps) or kilobits per second (kbps). Higher speed means pages load faster, video streams in higher quality, online games respond more quickly and large file transfers complete in less time. A lower speed shows up as buffering, lag and the spinning loading wheel.

    Speed is measured in bits per second. A kilobit (kbps) is 1,000 bits, a megabit (Mbps) is 1,000,000 bits, and a gigabit (Gbps) is 1,000,000,000 bits. ISPs and speed tests almost always quote in Mbps. The faster the connection, the more bits per second can be downloaded or uploaded.

    Bandwidth is the maximum amount of data an internet connection can carry per second, measured in megabits per second. A 100 Mbps line has 100 Mbps of bandwidth; a 1 Gbps line has 1,000 Mbps. Speed is how much of that bandwidth is being used at a given moment. The more bandwidth available, the more activities (4K streaming, gaming, video calls) can run simultaneously without slowdown.

    A wired connection uses a physical cable to transmit data - most commonly Ethernet for connecting devices to a router (using an RJ-45 connector), coaxial cable for older cable internet, or fibre optic for the line itself. Wired connections are faster, more stable and far less prone to interference than wireless, although they require a physical run between the device and the router.

    A wireless connection uses radio waves to transmit data. WiFi covers the home; cellular (3G, 4G, 5G) covers the metro; satellite (such as Starlink) covers everything else. Wireless is convenient - no cables - but inherently more variable than a wired link, because every wall, microwave and neighbouring access point can degrade the signal.

    Plug a laptop directly into the router with an Ethernet cable, close every other application and tab, then visit a reputable speed-test website such as Ookla, OpenSpeedTest or Fast.com. Click Start and wait 20–30 seconds. Repeat the test two or three times at different times of day and take the average. If the result is significantly lower than the package speed, the ISP is the next call.

    Many factors are at play: distance from the ISP's servers; the type of connection (fibre, LTE, ADSL, satellite); the number of users on the network at the same time; the age and quality of the router and modem; the type and processor speed of the device used to run the test; the strength of the WiFi signal; and the software, browser extensions and background applications running. Some of these can be improved (router upgrade, fewer users at once); others (line type, distance to the exchange) require an upgrade or a switch.

    Several steps help. Confirm the package matches the household's needs - upgrading from 50 Mbps to 200 Mbps often costs less than expected. Use Ethernet wherever possible. Close background applications. Restart the router and ONT periodically. Upgrade the router (WiFi 6 or 6E if the budget allows). Keep firmware and operating systems updated. Watch for peak-hour congestion, and contact the ISP if the issue persists.

    The most common culprits are: distance from the ISP's servers; network congestion at peak times; an old or low-grade router; too many users on the line at once; a weak WiFi signal; background software or browser extensions consuming bandwidth; an underpowered device; and - occasionally - misleading advertising from the ISP. If the wired test still falls well short of the advertised speed after eliminating these, it's time to log a fault.

    Yes - this is called throttling. ISPs may throttle to manage network congestion (slowing certain users to keep the network healthy for everyone), to enforce data caps on capped or 'soft-capped' uncapped products, or to deprioritise certain types of traffic. Genuine throttling on uncapped fibre in South Africa is rare but not unheard of, and ISPs are often required to disclose their throttling policies in their terms of service.

    A reliable speed test service is one that uses well-distributed test servers, transparent methodology and consistent results. Ookla Speedtest, OpenSpeedTest, MyBroadband Speed Test, Fast.com and Speedtest.co.za are all reputable. For the most accurate result, the test should be run from a wired device with no other applications consuming bandwidth.

    A router connects devices on a home or office network to the internet, acting as a gateway between the wider internet and the local devices. It typically offers multiple Ethernet ports, built-in WiFi, a firewall, network address translation (NAT) and quality-of-service (QoS) controls. Modern WiFi 6 and WiFi 6E routers handle dozens of devices comfortably and are the single biggest upgrade most households can make to their network.

    A modem connects a computer or other device to the internet by converting the signals used by computers (digital) into the signals used by the underlying network (analogue, on copper) and back again. On fibre, the equivalent device is the ONT (Optical Network Terminal), which converts the light signal in the fibre cable into an electrical signal. Most ISP-supplied units now combine the modem/ONT and the router into a single box.

    The modem (ONT on fibre) talks to the ISP and translates the signal. The router takes that signal and shares it with every device on the home network - over Ethernet and WiFi - while also providing the firewall, NAT and QoS. Many home gateways combine both functions into one unit, but they remain two distinct jobs.

    A DNS (Domain Name System) server translates human-readable website names like fastestfibre.co.za into the numerical IP addresses computers actually use to connect. Every page visit triggers a DNS lookup. A slow DNS server makes browsing feel sluggish even on a fast line. Many users switch from their ISP's default DNS to faster, privacy-friendly alternatives like Google Public DNS (8.8.8.8) or Cloudflare (1.1.1.1).

    Ping is a networking utility that tests the reachability of a host on an IP network and measures the round-trip time for a small data packet, in milliseconds. A lower ping indicates a faster, more responsive connection. Ping is invaluable for diagnosing latency, packet loss and jitter, and is the metric gamers and video-callers care about most.

    Jitter is the variability in the delay of packets across a network, measured in milliseconds. Packets that arrive at irregular intervals - caused by congestion, interference, hardware issues or routing changes - produce high jitter, which disrupts real-time applications like voice and video. Quality-of-service (QoS) settings on the router help by prioritising real-time traffic.

    Use a fibre coverage map - every major network (Vumatel, Openserve, Frogfoot, Octotel, MetroFibre and others) publishes one. Enter the street address as accurately as possible: coverage often differs house by house on the edges of newly rolled-out areas. Cross-checking against multiple maps gives the clearest picture, since some networks update faster than others.

    Fibre prices vary largely because the underlying network sets the wholesale cost the ISP resells. The same speed on Vumatel, Openserve and Frogfoot will often retail at noticeably different prices for the same ISP. On top of that, ISPs differentiate on speed, contract length, free installation, free routers, support quality and promotional discounts.

    Around 5 Mbps streams Netflix, Showmax or Amazon Prime in HD comfortably. 25 Mbps handles 4K. A 1–2 person household is happy on 10–25 Mbps; add 5–10 Mbps for each additional active person. A 4K-everywhere family of four lands comfortably on 100 Mbps.

    Openserve is the wholesale fibre network owned by Telkom Group - it installs and maintains the cables. Telkom (the retail brand) is one of many ISPs that resells Openserve fibre, alongside Webafrica, Afrihost, Cool Ideas, Vox and others. The line is the same; the ISP behind it is the customer's choice.

    Fibre installation typically takes 3–10 working days on a live address and 14–21 days on a fresh installation. Standard installation costs R1,000–R2,500 depending on the network and the complexity of the property, but most ISPs waive the fee on a 24-month contract.

    Fibre is a dedicated physical connection, so it doesn't share airwaves with neighbours, isn't affected by tower congestion or weather, and delivers higher speeds, lower latency and far more consistent performance than LTE or fixed wireless. WiFi and LTE are more portable, but for a home connection where the line is fixed, fibre wins on every meaningful metric.

    Telkom's uncapped fibre prices change regularly, vary by underlying network (Openserve, Vumatel and others), and depend on the speed tier. The fastest way to compare is to check the latest Openserve packages across multiple ISPs on FastestFibre - the same speed often costs noticeably less on a competitor.

    Webafrica, Afrihost, Cool Ideas, Vox, RSAWEB and Home-Connect consistently top user-rating tables for service, speed and support. The 'best' depends on the underlying network in the area, the price at the time of signing and the support quality the customer experiences.

    First, research and choose a new ISP. Check whether the current contract has an early-termination fee. Sign up with the new ISP and schedule activation. Cancel the old service for the day after activation begins, to avoid double billing. The technician (if needed) installs and activates. Run a speed test once it's live to confirm everything is working.

    Fibre is the best possible connection for gaming. The combination of high speed, low latency (sub-20 ms to local servers), low jitter and high upload makes it ideal for competitive online play. A wired connection from PC or console to the router is essential; WiFi adds variability that costs games.
    Quick reference

    Frequently Asked Questions

    A few short, scannable answers to the most common fibre-speed questions.

    Download speed (measured in Mbps) is the maximum amount of information a device can receive from the internet in a single second.

    Upload speed (measured in Mbps) is the maximum amount of information a device can transfer to the internet in a single second.

    Although their definitions differ, ping and latency are often used synonymously. Both measure how soon a response is received after a request is sent. Ping rates are influenced by packet size, packet loss and jitter.

    Mbps stands for 'megabits per second'. One megabit equals one million bits - the smallest unit of digital data, represented as zeros and ones in binary. ISPs use Mbps to advertise their package speeds.

    Packet loss occurs when data packets fail to arrive at their destination after being transmitted across a network. The effect is reduced speed and rising latency, because dropped packets must be re-sent.

    FCC guidelines recommend a minimum of 25 Mbps for basic internet use. Email and browsing need only 1–5 Mbps; HD streaming wants 15–25 Mbps; 4K streaming and casual gaming need 40–100 Mbps; serious gaming, large downloads and 4K-everywhere households want 200 Mbps or more.

    Make sure no other devices or consoles are using the WiFi. Close every other tab and application. Connect via a wired Ethernet cable and turn off the device's WiFi. Disable antivirus and firewall software where possible. Test at different times of day to see how the line behaves under different load.

    A speed test takes seconds and confirms whether the line is delivering the agreed-upon speed, reveals how performance varies through the day, allows easy comparison against competitor offers, and helps decide whether the current package still meets the household's needs.

    Broadband data rates are measured in kilobits per second (kbps) and megabits per second (Mbps). The more bits per second the line can carry, the faster the connection.

    Jitter is the variation in time between when a signal is transmitted and when it's received across a network. It's usually a result of network congestion, and it disrupts real-time applications like voice and video calls.

    Once a month is enough for general health-checking. Run extra tests after a router restart, after switching ISPs, when something feels slow, or before logging a fault - the results become evidence.
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