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 BAC Calculator, Daily Fat Intake Calculator, BMI Calculator, BMR & TDEE Calculator, Calorie Calculator, Ideal Weight 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