Free Online Fitness & Health Calculators

Achieve your health and fitness goals with our accurate, easy-to-use calculators. Track your BMI, daily calorie needs, body fat percentage, ideal weight, and more — all completely free with instant results and no registration required. Trusted by thousands to make informed decisions about diet, exercise, and wellness.

⚖️ Body Composition & Weight Tools

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BMI Calculator

Calculate your Body Mass Index (BMI) instantly using height and weight. Understand if you're in a healthy range and track progress over time.

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Ideal Weight Calculator

Find your ideal body weight using trusted formulas (Devine, Robinson, Hamwi) and see your healthy BMI range based on height and gender.

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Body Fat Calculator

Estimate your body fat percentage using measurements (Navy method, YMCA, or skinfold). More accurate than BMI for fitness tracking.

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🍎 Nutrition & Metabolism Calculators

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Daily Calorie Calculator

Discover your daily calorie needs for weight loss, maintenance, or gain. Uses Mifflin-St Jeor formula with activity level adjustments.

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BMR Calculator

Calculate your Basal Metabolic Rate (BMR) — the calories your body burns at rest. Essential for creating effective diet plans.

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🤰 Pregnancy & Special Health Tools

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Pregnancy Due Date Calculator

Estimate your baby's due date based on last menstrual period or conception date. Track pregnancy weeks and key milestones.

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