Health & Fitness Kit
BMI, BMR, body fat, calorie calculator, water intake — all the health and fitness calculators you need for a healthier lifestyle.
Calculate body mass index from your height and weight.
Open tool →Calculate BMI with detailed category, healthy weight range, and BMI Prime. More comprehensive than basic BMI.
Open tool →Calculate your Basal Metabolic Rate using the Mifflin-St Jeor equation. See TDEE at all 5 activity levels. Free BMR calculator.
Open tool →Calculate body fat percentage using the US Navy method. See lean mass, fat mass, and body composition category. Free body fat calculator.
Open tool →Calculate your daily calorie needs based on age, weight, height and activity level. Uses the Mifflin-St Jeor equation — the global medical standard.
Open tool →Calculate your daily water intake based on weight, activity level, and climate. Free hydration calculator with visual glass icons.
Open tool →Calculate daily calories, protein, carbs, and fat based on your body stats and goals. Uses Mifflin-St Jeor equation. Free TDEE and macro calculator.
Open tool →Find the best bedtime or wake-up time based on 90-minute sleep cycles. Wake up refreshed by aligning your alarm with your natural sleep rhythm.
Open tool →Convert dog years to human years. More accurate than the 7x rule — accounts for faster aging in early years.
Open tool →Convert cat years to human years. Accounts for rapid aging in the first two years of a cat's life.
Open tool →