Internet Measurement Tests

M-Lab hosts a number of measurement tests, allowing you to check for everything from network speed and latency to blocking and throttling. Explore them below, and run a test to learn more about your connection.

All tests hosted on M-Lab only perform active measurements. This means that tests only run when people decide to run them. They do not passively monitor your connection. M-Lab hosted tests do not download or upload files to or from your device. Instead tests measure the way in which the network responds to a synthetic stream of data that is generated by the individual test specifically for the purpose of measurement. The tests do not collect information about your other Internet traffic, such as your emails or web searches, or any personally identifiable information.

  • All data collected will be made publicly available, including the IP addresses that users use to connect to the test.
  • All data collected is stored and published indefinitely.
  • M-Lab cannot delete the data associated with individual user tests once it has been collected.
  • All tests are open source and created and maintained by researchers.

Please review M-Lab’s Privacy Policy before initiating any measurement test and contact us at if you have any questions regarding these terms.

Using and Troubleshooting M-Lab Tests

If you need help or have questions about using M-Lab tests, you can search our answers to commonly asked questions through our support website, or email us at and our team will get back to you.

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