Fitness Calculators
Heart rate zones, pace, calories burned, and training tools
Heart Rate Zone Calculator
Calculate training heart rate zones using the Karvonen method.
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1RM Calculator
Calculate your one-rep max from weight and reps using Brzycki and Epley formulas.
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Pace Calculator
Convert between pace, time, and distance for running and walking.
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Calories Burned Calculator
Estimate calories burned by activity and duration using MET values.
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Walking Calories Calculator
Calculate calories burned while walking based on speed, weight, and duration.
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VO2 Max Calculator
Estimate your VO2 max from running test data.
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