Broadband Speed Test

What Do The Results Mean

NOTE: Variable speed products and those sold as 'up to' a specific speed may not reach the maximum advertised download or upload speeds. The rules around selling broadband in the UK mean that 10% of customers should be able to reach the 'up to' speeds quoted in adverts. For individuals not reaching the advertised speed this will often be due to the length of your phone line, ISP network congestion or traffic shaping, wireless networks or shared users/programs on your connection. Any results generated are not a guarantee of your true connection speed or your ability to perform a specific online task.

Wi-Fi, Fibre and Mobile: Testing Different Types of Connection

How you test your broadband speed often matters as much as when. Our broadband wifi speed test measures everything between your device and the wider internet, including your own home network, router placement and any interference from walls or neighbouring Wi-Fi signals. A wired test, by contrast, strips most of that out and gives you a cleaner read on what your line is actually capable of.

This distinction matters more as connections get faster. A full fibre broadband speed test on a gigabit line will often show a noticeably lower result over Wi-Fi than over Ethernet, simply because most household Wi-Fi setups can't comfortably push that much data wirelessly. If your fibre broadband speed test results look disappointing, try the same test wired in before assuming there's a fault with your line.

If you're testing from a mobile or 4G/5G connection rather than home broadband, bear in mind that our tool is designed for home broadband first. While it will still work, mobile speed checks are far more sensitive to your physical surroundings, including how many other devices are using the same mast nearby.

Comparing Your Results to Other UK Broadband Users

Once you've got a result, it helps to know how it stacks up. We publish regular UK broadband speed check summaries showing average speeds nationally and by provider, so you can see whether your connection is roughly in line with what others on similar packages are getting. A speed test broadband UK comparison is also a useful sanity check before raising a fault with your provider, since a connection running a little under its advertised maximum is normal, but one running at a fraction of what's expected is worth flagging.

Speeds also vary regionally depending on local infrastructure, so don't be surprised if your broadband speed check UK result differs from a friend's in another part of the country, even on a similar headline package.

Other Ways to Check Your Broadband Speed

Our speed test isn't the only tool worth knowing about, though it's designed to be one of the more accurate speed test sites for broadband in the UK. If you want to dig a little deeper:

• Download Test Files
  Estimate real-world transfer speeds using files of varying sizes, useful for a second data point alongside the main speed test.
• Broadband Quality Monitoring
  Runs continuously in the background, far more useful than a single test for spotting intermittent drops, packet loss or time-of-day slowdowns.
• Our availability checker
  Tells you what speeds and packages are actually available at your address, the next logical step if your results show you've outgrown your package.

Whichever speed checker broadband tool you use, try to test more than once and at different times before drawing conclusions. A single result is a snapshot, not the full picture.