Fitness
Fitness calculators.
BMI, daily calories, macros, body fat, heart-rate zones, running pace, and other training and nutrition numbers, with clear explanations of what they mean and where their limits are.
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Fitness
BMI Calculator
Calculate your body mass index and see your healthy weight range.
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Calorie Calculator
Estimate your daily calorie needs from your BMR and activity level, with targets for losing or gaining weight.
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Protein Intake Calculator
Estimate a daily protein target from body weight and a chosen grams-per-unit goal.
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One-Rep Max Calculator
Estimate one-repetition maximum strength from a lifted weight and repetition count.
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Macro Calculator
Split daily calories into protein, carb, and fat grams with common diet presets or a custom ratio.
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Body Fat Percentage Calculator
Estimate body fat percentage from tape measurements using the U.S. Navy method, plus lean body mass.
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Running Pace Calculator
Find your pace, finish time, or distance for a run, with per-kilometer and per-mile equivalents.
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Heart Rate Zone Calculator
Calculate five training heart-rate zones from your age and resting heart rate with the Karvonen method.
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Ideal Weight Calculator
Estimate ideal body weight with the Devine, Robinson, Miller, and Hamwi formulas plus the healthy BMI range.
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Calories Burned Calculator
Estimate calories burned for common activities from MET values, body weight, and workout duration.
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