14 free calculators for workouts, cardio, and athletic performance.
Find your 5 heart rate training zones based on max HR.
Calculate your maximum heart rate by age and method.
Estimate your aerobic fitness level and VO2 max.
Calculate running pace, finish time, or distance from any two inputs.
Estimate calories burned during 30+ exercises and activities.
Convert daily step count to calories burned.
Estimate calories burned while walking by speed and distance.
Calculate calories burned cycling by speed, duration, and weight.
Estimate calories burned swimming by stroke and duration.
Estimate your 1RM for any lift using standard formulas.
Calculate calorie surplus and macros for muscle building.
Plan calorie deficit and macros for cutting while preserving muscle.
Estimate muscle recovery time after training sessions.
Plan calorie surplus and timeline for healthy weight gain.