Free health calculators: understand your body and start looking after yourself more easily

Try the BMI, BMR, TDEE and protein calculators to get a first picture of your body and plan everyday nutrition.

Results are estimates or basic screening only, not a medical diagnosis or medical advice.

Tools you can use now

• Is your weight in step with your height? Try the BMI calculator Open tool ›
• How many calories do you use in a day? Calculate your TDEE Open tool ›
• Are you getting enough protein today? Calculate daily protein Open tool ›
• How much energy does your body use? Calculate resting BMR Open tool ›
• How much energy do you use? Try a scenario Simulate daily energy Open tool ›
• How much protein, carbs and fat a day? Calculate your macros Open tool ›
• Is your waist in proportion to your height? Waist-to-height ratio Open tool ›
• Are you drinking enough water today? Estimate daily water Open tool ›

What you enter is calculated in your browser only. It is not sent to a server, not stored, and disappears when you close the page.

BMI calculator — Photo: SHVETS production / Pexels (Pexels License) · TDEE calculator — Photo: Yazid N / Pexels (Pexels License) · Protein calculator — Photo: cottonbro studio / Pexels (Pexels License) · BMR calculator — Photo: Liza Summer / Pexels (Pexels License) · Daily energy simulator — Photo: Zifeng Xia / Pexels (Pexels License) · Macro calculator — Photo: Julia K. / Pexels (Pexels License) · Waist-to-height ratio calculator — Photo: beyzahzah / Pexels (Pexels License) · Water intake estimator — Photo: Kampus Production / Pexels (Pexels License)