PaceCalc
Calculate pace

Exact pace arithmetic

Running pace calculator

Enter any two of distance, elapsed time, and pace. PaceCalc solves the third value and shows both metric and imperial pace, speed, and even cumulative splits.

Browser-only calculator

Distance, time, and pace

Calculated on this page

What should PaceCalc calculate?

Distance

Metric distances accept up to six decimals; miles accept up to three.

Elapsed time

Use whole hours, minutes, and seconds. Minutes and seconds must stay below 60.

Split table unit

Rows are cumulative at each whole kilometre or mile, plus the exact finish.

PaceCalc performs steady-pace arithmetic only. It does not predict race performance, prescribe training, or adjust for terrain, weather, fatigue, or health.