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Fitness & Health Calculators

Free tools for BMI, calories, body fat, pregnancy, macros, and more — helping you live healthier every day.

🏃 29 Calculators 🩺 3 Categories ✓ 100% Free
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These calculators help you track and understand the numbers behind your health and fitness — from body measurements like BMI and body fat, to daily calorie and macro needs, pregnancy timelines, and exercise metrics like heart rate zones and one-rep max. They're grouped into three sections: general fitness tools, pregnancy calculators, and nutrition-related calculators.

Every result is calculated instantly using established health formulas (like the Mifflin-St Jeor equation for BMR) based on the details you provide. These tools are meant to help you understand and plan — they don't replace advice from a doctor or registered dietitian, especially for pregnancy-related calculators or medical conditions. The BMI Calculator, Calorie Calculator, and TDEE Calculator are the most frequently used tools on this page.

Frequently Asked Questions

Are these health calculators a substitute for medical advice?

No. These tools provide general estimates based on standard formulas and the numbers you enter. For medical decisions, pregnancy care, or specific health conditions, please consult a doctor or qualified health professional.

What's the difference between BMR and TDEE?

BMR (Basal Metabolic Rate) is the energy your body needs at complete rest. TDEE (Total Daily Energy Expenditure) adds your activity level on top of BMR, giving a more realistic estimate of how many calories you burn — and should eat — in a typical day.

Which calculator should I use to plan weight loss?

Start with the TDEE Calculator to find your maintenance calories, then use the Macro Calculator to divide that number into protein, carbs, and fat targets suited to your goal.

All Fitness & Health Calculators — Completely Free

No sign-up, no subscription. Just accurate results, instantly.

29
Calculators
3
Categories
100%
Free