Free Online Health & Fitness

5 free browser-based health & fitness — no sign-up, no server uploads, all processing happens in your browser.

Calculate your Body Mass Index (BMI) instantly. Check if you're underweight, normal, overweight, or obese with metric and imperial units

Calculate your daily calorie needs using the Mifflin-St Jeor equation. Find your BMR, TDEE, and calories for weight loss or gain

Estimate your body fat percentage using the US Navy method. See fat mass, lean mass, and body fat category for men and women

Calculate your daily macros for protein, carbs, and fat. Choose from balanced, low carb, high protein, or keto splits based on your TDEE

Calculate your pregnancy due date from last menstrual period, conception date, or IVF transfer. See trimester timeline and key milestones