Calculators for runners, cyclists, swimmers, and athletes to track performance and training load
Predict your finish time for any race distance using Riegel's formula.
Estimate VO2 max from the Cooper 12-minute run test.
Calculate cycling power output from speed, mass, and grade.
Calculate your swimming pace per 100 meters.
Calculate your rowing ergometer pace per 500 meters.
Estimate hiking time using Naismith's Rule, factoring elevation gain.
Calculate total elevation gain and loss from a list of readings.
Calculate heart rate training zones using the Tanaka formula.
Calculate the ACWR injury-risk metric from training load data.
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