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Running Calculators & Tools
Free calculators built by runners for runners. Enter your numbers, get your answer.
VDOT Calculator
Enter a race result to get your VDOT fitness score, equivalent race times, and training paces for 7 intensity zones.
Pace Calculator
Enter any two of distance, time, and pace to calculate the third. Includes per-kilometer splits and speed conversion.
Pace & Speed Converter
Convert between min/km, min/mile, km/h, and mph. Reference table of common running paces included.
GPX Race Pacer
Upload a GPX course file and get an elevation-adjusted race plan. Paces every segment based on gradient using the Minetti energy cost model.
Which running calculator should I use?
I have a race result and want training pacesVDOT Calculator →
I know distance and time, need my pacePace Calculator →
I know pace and distance, need my finish timePace Calculator →
I need to convert treadmill speed to pacePace Converter →
I need min/km to min/mile conversionPace Converter →
I want a race pacing plan based on elevation changesGPX Race Pacer →