Fitness

Calorie, BMI, macros, and workout calculators

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BMI Calculator

Calculate Body Mass Index and health status

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Calorie Calculator

Calculate daily calorie needs for weight goals

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Macro Calculator

Calculate macronutrient ratios for your goals

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Pace Calculator

Calculate running and walking pace, time, or distance

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BMR Calculator

Calculate your Basal Metabolic Rate (BMR) using Mifflin-St Jeor, Revised Harris-Benedict, and Katch-McArdle formulas.

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Calories Burned Calculator

Estimate calories burned for any activity using MET values and your body weight.

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All Fitness calculators

Ideal Weight Calculator

Find your ideal weight based on multiple formulas

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Protein Calculator

Calculate daily protein intake requirements

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Body Fat Calculator

Estimate body fat percentage using measurements

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One Rep Max Calculator

Calculate your one rep max and training percentages

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Калькулятор: Water Intake

Використовуйте Калькулятор: Water Intake, щоб отримати чіткий і практичний результат на основі ваших даних.

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Heart Rate Zones

Calculate target heart rate zones for training

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Fitness calculators — frequently asked questions

Quick answers about the fitness tools on Mathify.

What fitness calculators are offered?+

BMI, calorie, macro, TDEE, BMR, pace, and step converters.

Are calorie estimates personalized?+

Yes. They use your age, weight, height, and activity level.

Is fitness data private?+

Yes. Everything is computed locally in your browser.