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Health

Health & Fitness Calculators

Free calculators for BMI, calories, macros, and more. Track your health and fitness goals.

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All Health Calculators

BMI Calculator

Calculate your Body Mass Index

Calorie Calculator

Find your daily calorie needs based on your age, gender, weight, and activity level.

Macro Calculator

Calculate your optimal macronutrient ratios for protein, carbs, and fat. Choose from preset diet styles or create your own custom split.

TDEE Calculator

Calculate your Total Daily Energy Expenditure to understand how many calories you burn each day.

Body Fat Calculator

Calculate your body fat percentage using multiple methods including the US Navy formula, RFM, and BMI estimation. See your body composition and category.

Ideal Weight Calculator

Calculate your ideal body weight using four established formulas: Robinson, Miller, Hamwi, and Devine. Adjust for your body frame size.

BMR Calculator

Calculate your Basal Metabolic Rate - the number of calories your body burns at complete rest. Compare results from Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle formulas.

Water Intake Calculator

Calculate your daily water needs based on body weight, activity level, and climate.

Protein Calculator

Calculate your daily protein needs based on body weight, fitness goals, and activity level.

One Rep Max Calculator

Calculate your one-rep max (1RM) using multiple proven formulas. Plan your training percentages and rep ranges effectively.

Heart Rate Zones Calculator

Calculate your training heart rate zones for optimal cardio exercise. Uses multiple formulas for accuracy.

Pace Calculator

Calculate your running or cycling pace, time, or distance. Get split times for your races and training runs.

Pregnancy Calculators

Tools for expecting parents