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
165
Topics: All Running (14) Cycling (10) Swimming (8) Gym (2)
165 results
Sports

Race Time Predictor (Riegel)

Predict your time for a target race distance from a known time and distance using the Riegel formula T₂ = T₁ · (D₂ / D₁)...

basic
5,273 4.1 1 min
Sports

Swim Pace Calculator

Convert a swim split (time and distance) into pace per 100 m, pace per 100 yd, and average swim speed in m/s.

basic
6,388 4.5 1 min
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