Average speed calculator for a GPX file

Import a timestamped .gpx file and get the activity's average speed, plus average moving speed (excluding stopped periods).

Example:

.gpx file (drag and drop or choose)

How it works

Average speed is simply the total distance divided by the total activity duration, including stops. Average moving speed excludes segments where the instant speed drops below 1 km/h (considered stops), giving a more accurate picture of your actual moving pace.

This calculation requires every point in the GPX track to have a <time> timestamp, which most GPS watches and fitness apps export.

100% local processing: the analysis happens entirely in your browser via WebAssembly — your track is never sent to a server.