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Free Health & Fitness Calculators

BMI, TDEE, macros, body fat, 1RM, running pace, heart rate zones — 12 free calculators. No signup required.

BMI Calculator

Calculate Body Mass Index with imperial or metric units

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TDEE Calculator

Calculate Total Daily Energy Expenditure

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Calorie Deficit

Calculate daily calorie deficit for weight loss goals

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Pi

Macro Calculator

Calculate daily macronutrient targets

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Body Fat Calculator

Estimate body fat percentage from measurements

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One Rep Max

Calculate your one-rep max from submaximal lifts

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Running Pace

Calculate pace, speed, and finish times for running

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Heart Rate Zones

Calculate heart rate training zones

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Water Intake

Calculate daily water intake needs

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Ideal Weight

Calculate ideal body weight using multiple formulas

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Due Date

Calculate estimated pregnancy due date

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Sleep Cycle

Calculate optimal sleep and wake times

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