Health
BMI, metabolism, body fat, heart-rate zones: numbers that help you track your fitness, without replacing advice from a health professional.
- Health BMI calculator Calculate your body mass index from your weight and height in pounds and inches or kilograms and centimeters, see your category and the weight range that matches a healthy BMI.
- Health BMR and calorie calculator Estimate your basal metabolic rate and total daily energy expenditure from your age, sex, height, weight and activity, then the calories to maintain, lose or gain weight steadily.
- Health Body fat calculator Estimate your body fat percentage from your height and neck, waist and hip measurements using the US Navy method, then your fat mass, lean mass and fitness category.
- Health Heart rate zone calculator Estimate your maximum heart rate and your five training zones with the Karvonen method, which uses your resting heart rate to personalize each zone.
- Health Blood alcohol calculator Estimate your blood alcohol concentration with the Widmark formula from your weight, drinks and time, and how long it takes to fall back to zero.
- Health Calorie deficit calculator Find the daily calorie target for your goal and pace of weight loss, and how many weeks it should take.
- Health Calories burned calculator Estimate the calories you burn in a workout from the activity, its duration and your weight, using MET values.
- Health Ideal weight calculator Compare the classic ideal body weight formulas used in medicine with the healthy BMI range for your height.
- Health Lean body mass calculator Estimate your lean body mass, everything except fat, from your height and weight, and the body fat percentage it implies.
- Health Macro calculator Split your daily calories into protein, carbohydrates and fat for a balanced, high-protein, low-carb or keto diet, or your own ratios.
- Health One rep max calculator Estimate the most you could lift once from a set of several reps, and get training loads for strength, hypertrophy and endurance.
- Health Protein calculator Estimate your daily protein needs from your weight and goal, from the RDA to muscle building, with grams per meal.
- Health Running pace calculator Turn a race time into pace per mile and per kilometer, speed, and predicted times for the 5K, 10K, half and full marathon.
- Health VO2 max calculator Estimate your VO2 max from a 12-minute Cooper run or from your resting heart rate, with a fitness rating and training paces.
- Health Waist-to-hip ratio calculator Measure how your body stores fat around the middle with the waist-to-hip ratio, the waist-to-height ratio and waist size.
- Health Water intake calculator Estimate your daily fluid needs from the National Academies reference values, adjusted for exercise, heat, pregnancy and breastfeeding.