Health & Fitness Calculators

Free health and fitness calculators. Check your BMI, estimate body fat percentage, calculate your TDEE, and plan your nutrition.

BMI Calculator

Calculate your Body Mass Index (BMI) to check if your weight is healthy. Supports both metric and imperial units.

Estimate your body fat percentage using the U.S. Navy method. Enter your measurements for an accurate assessment.

Calculate your Total Daily Energy Expenditure (TDEE) based on your BMR and activity level. Plan your calorie intake for weight goals.

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

Calculate optimal bedtimes and wake times based on 90-minute sleep cycles. Wake up feeling refreshed.

Calculate running pace per km or mile. Get splits for 5K, 10K, half marathon, and marathon.

Calculate daily macros for protein, carbs, and fat based on calories and fitness goals.

Estimate blood alcohol content based on drinks, weight, gender, and time elapsed.

Track menstrual cycle and predict next period. Calculate fertile window and ovulation dates.

Calculate pregnancy due date from LMP or conception. Track gestational age and milestones.

Calculate one rep max from weight and reps. Get percentage-based training recommendations.