Health & Fitness

BMI, calorie, body fat, and wellness calculators

Calculate your Body Mass Index (BMI) using weight and height. Supports pounds/kilograms and feet-inches/centimeters with instant category results.

Calculate your daily calorie needs using the Mifflin-St Jeor equation. Get maintenance, weight loss, and weight gain targets based on your activity.

Calculate your Basal Metabolic Rate using the Mifflin-St Jeor equation. Find out how many calories your body burns at rest each day.

Estimate your body fat percentage using the US Navy method. Enter waist, neck, height, and hip measurements to get fat mass and lean mass results.

Calculate your estimated due date from your last menstrual period. See your current week of pregnancy, trimester, and days remaining.

Calculate your recommended daily water intake based on body weight, activity level, and climate. Get results in ounces, liters, and glasses.

Find your ideal body weight using four proven medical formulas: Devine, Robinson, Miller, and Hamwi. Compare results by height and gender.

Calculate your daily macronutrient targets for protein, carbs, and fat. Choose from balanced, low-carb, high-protein, or keto diet profiles.

Calculate your target heart rate training zones using the Karvonen formula. Enter age and resting heart rate to see all five intensity zones.

Estimate your Blood Alcohol Content using the Widmark formula. Enter drinks, weight, gender, and time elapsed to see BAC and sobriety time.