Running Pace Calculator

The Running Pace Calculator turns a distance and a finishing time into the numbers runners actually care about: your average pace per kilometre and per mile, shown as minutes and seconds, plus your average speed in both km/h and mph.

Enter how far you ran, choose kilometres or miles, type in your time as hours, minutes and seconds, and it does the conversions in one step.

Pace is the language of running.

Knowing you held 5:00 per kilometre tells you far more about an effort than a raw finishing time, and it is how training plans and race targets are written.

The fiddly bit is converting between kilometre and mile pace — a mile is about 1.609 kilometres, so the two paces are never the same number — and formatting the result properly as mm:ss rather than a confusing decimal.

This tool handles both, padding the seconds so 5:09 never shows up as 5:9, and gives the equivalent speed for anyone who prefers thinking in km/h or mph.

Use it to check the pace you held on a recent run, to work out what pace a goal time demands, or to translate a treadmill speed into an outdoor pace.

The calculation runs entirely in your browser, so your training data stays on your device, nothing is logged, and it works offline — useful when you are reviewing a run somewhere with no signal.