Health & Fitness 37 free tools

BMI, calorie, macro, body fat, heart rate, pregnancy and fitness calculators.

About our health & fitness

BMI, calorie, macro, body fat, heart rate, pregnancy and fitness calculators.

All 37 health & fitness on Gemma-4 are free, work instantly in your browser and come with a step-by-step guide. Popular picks include BMI Calculator, BAC Calculator, Daily Fat Intake Calculator, Calorie Calculator, Ideal Weight Calculator, Step to Distance Calculator.

Use this free BMI calculator to calculate results instantly. Accurate, mobile-friendly and no sign-up needed.

27 Sept 2026

Calculate in seconds with our free BMR & TDEE calculator: simple inputs, instant results, charts and a shareable link.

27 Sept 2026

Calculate in seconds with our free calorie calculator: simple inputs, instant results, charts and a shareable link.

27 Sept 2026

Free online ideal weight calculator — enter your values and get instant, accurate results with formula and breakdown.

27 Sept 2026

Free online body fat percentage calculator — enter your values and get instant, accurate results with formula and breakdown.

27 Sept 2026

Use this free heart rate calculator to calculate results instantly. Accurate, mobile-friendly and no sign-up needed.

27 Sept 2026