Calculators
Calculate your fitness metrics instantly. All tools free, no sign-up required.
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Strength1RM Calculator
Enter the weight you lifted and your rep count — instantly calculate your 1RM through 5RM using the Wathan formula.
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Body CompositionBody Fat Percentage Calculator
Use the Navy method to calculate your body fat %, fat mass, and lean mass from neck, waist, and hip measurements.
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NutritionTDEE Calorie Calculator
Calculate your daily calorie needs and targets for weight loss or muscle gain based on age, height, weight, and activity level.