Fitness calculators

Training calculators for runners and gym-goers, from race pace and finish time predictions to estimating your one-rep max.

Work out your running pace per km or mile, and predict your finish time for other race distances.

Estimate your one-rep max from a weight and rep count, plus a training percentage table.

Work out your estimated maximum heart rate and training zones, from easy recovery pace to maximum effort.

Estimate how many calories you burn during exercise, based on your weight, the activity and how long you do it for.