Fitness Calculators
Training numbers for runners, cyclists, swimmers and lifters. Estimates are informational, not medical advice.
Running Pace CalculatorPace, finish time or distance for runs — with splits and speed.
One Rep Max CalculatorEstimate your 1RM from a submaximal set, with training loads.
Race Time PredictorPredict your 5K, 10K, half or marathon time from a recent race.
Pace Split CalculatorSplit times for any race, with even or negative splits.
Walking, Cycling & Swimming Pace CalculatorPace and speed for walking, cycling and swimming.
VO2 Max CalculatorEstimate VO₂ max from a Cooper test, heart rate or 1.5-mile run.
Calories Burned CalculatorCalories burned for 28 activities using MET values.
Steps to Distance & Calories CalculatorConvert steps to km or miles and estimate calories.
Cadence CalculatorRunning cadence (steps/min) or cycling cadence (rpm).
Stride Length CalculatorStep and stride length from a measured walk or your height.
Barbell Plate CalculatorWhich plates to load on each side of the bar.