Found a bug, have a question about how the test works, or want to suggest something? Email is the best way to reach us.

contactus@checkinternetspeed.tools

Before you write about an unexpected result

A few things explain most surprising numbers: wifi instead of a wired connection, distance from your router, other devices using the line, time of day, and the fact that this test measures to a single nearby server rather than many. The home page FAQ covers these in more detail, and they resolve the large majority of "my speed looks wrong" questions.