Sports calculators

Pace, power, and performance math for every sport.

Running, cycling, swimming, and gym math — from race pace and splits to power-to-weight and training-load calculations.

Calculators
14
Topics: All Running (14) Cycling (10) Swimming (8) Gym (2)
14 results
Sports / Running

VO₂ Max Calculator

Estimate VO₂ max from resting and maximum heart rate — a 30-second screening estimate, not a clinical measurement.

basic
16,788 4.2 1 min
Sports / Running

Marathon Time Predictor

Project your marathon finish time from a recent shorter-race time using the classic Riegel race-time formula.

basic
2,778 3.9 1 min