Free Fitness Calculators

Instant, accurate calculators for your nutrition and training goals. Used by 15,000+ athletes and fitness enthusiasts.

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TDEE Calculator

Calculate your Total Daily Energy Expenditure to find out exactly how many calories you burn per day based on your activity level.

Monthly Searches 500K
Accuracy ±5%
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BMR Calculator

Calculate your Basal Metabolic Rate to discover how many calories your body burns at rest. The foundation of all nutrition planning.

Monthly Searches 500K
Formula M-StJ
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Calorie Calculator

Get personalized daily calorie targets for weight loss, muscle gain, or maintenance based on your specific goals and lifestyle.

Monthly Searches 500K
Goals 5
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Macro Calculator

Calculate your optimal protein, carbs, and fats distribution based on your fitness goals. Includes meal-by-meal breakdown.

Monthly Searches 500K
Diets 5
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1RM Calculator

Estimate your one-rep max for any lift using proven formulas. Includes training percentages and strength standards.

Monthly Searches 18K
Formulas 2

Stop Calculating Manually

PRPath's AI coach ATLAS automatically tracks your TDEE, adjusts your macros, and optimizes your nutrition based on your training. No calculators needed.

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