The ultimate speed test test

Speed tests tested like never done before

Which speed test is best for me?

Read this advice or check out the top 5 best speed tests.

  1. Google Fiber
  2. M-Lab
  3. Internet Speed at a Glance
  4. ...

Use the Interactive Speed Test Advisor if you want to find a speed test with a specific purpose in mind.

Use the Dynamic Speed Test Advisor if you are looking for a speed test with specific characteristics.

Everything you need to know

If you're serious about getting into speed tests, you need to know what a speed test measures, why speed tests give different results and which factors makes a speed test excellent.

Perhaps the best summary can be found at the Did you know that ... page.

What a speed test measures

With a speed test you measure the bottleneck link between you and the speed test's test server. That is you measure the bandwidth of the link with the lowest capacity...
Read more at What a speed test measures.

Why speed tests give different results

When you test your internet speed with different speed tests, you will get different results even if you have the same test conditions. The standard explanation for this is that each speed test is programmed in a unique way. However that is probably not the only reason ...
Read more at Why speed tests give different results.

What makes a speed test excellent?

If you want to rate speed tests, you need to know what criteria the rating is based on. After performing several speed tests, the conclusion is that an excellent speed test has the following characteristics ...
Read more at What makes a speed test excellent?.

Results of the ultimate speed test test

It is not easy to unambiguously determine what the best speed test is. This depends on the importance you assign to a criterion. Think of criteria such as: usually the best, the most accurate or the most climate-friendly.

The best speed test

The best speed tests are:
1. Google Fiber - a highly recommended speed test,
2. Measurement Lab - as good as Google Fiber but slightly slower ...
Read more at the best speed test.

The most accurate speed test

Which speed test is most accurate depends on the speed you measure (or expect to measure). M-Lab is the only speed test that appears in the top 3 of most accurate speed tests for every speed tested.
Read more at the most accurate speed test.

The most climate-friendly speed test

Speed test loads a lot of data to measure your download speed. Due to the widespread use of speed tests, they contribute significantly to global CO2 emissions. It is therefore preferable not to use a speed test if it is not really necessary. Should you use a speed test? Then use Internet Speed at a Glance or ...
Read more about climate-friendly speed tests.

All speed tests

The main findings of each tested speed test are available at the Speed tests page.

Frequently Asked Questions

Do you prefer a list of questions and answers regarding speed test, then you should read the ultimate speed test test FAQ.