Calculators

Useful numbers for training, running, and keeping a general eye on the machinery. Choose a section below; the results update automatically as you type.

Body Stats

BMI and estimated daily calorie use, with metric and imperial measurements.

Running

Work out pace and speed, or turn a recent race result into an estimate for another distance.

Cycling

Calculate average cycling speed, gear ratios, gear inches, rollout, and speed at a selected cadence.

Training

Estimate heart-rate training zones and one-rep max without having to trust the arithmetic you did between sets.

These are fitness estimates, not medical tools. You will not find blood-test interpretation, diagnoses, or an internet calculator pretending to be your doctor here.