Tools in Health
Health and wellness calculators: BMI, calories, hydration, pregnancy and running pace. Instant guideline results, each with its explanation.
- TopBMI Calculator (Body Mass Index)Work out your body mass index from weight and height, see your healthy weight range based on WHO categories and what your score actually means.
- BMR Calculator (Basal Metabolic Rate)Calculate your basal metabolic rate (BMR) with the Mifflin-St Jeor and Harris-Benedict formulas. Instant kcal/day result, free and with no sign-up.
- Body Fat Calculator (US Navy Method)Estimate your body fat percentage with the US Navy tape-measure method from neck, waist and hip, plus your fat mass and lean mass in kilograms.
- Calorie deficit calculatorFree calorie deficit calculator built on the Mifflin-St Jeor equation: get your BMR, TDEE, daily calorie target and estimated weekly weight loss.
- Pregnancy Due Date CalculatorEstimate your baby's due date from your last menstrual period with Naegele's rule, adjusted for your cycle length. Free, instant and private.
- TopProtein intake calculatorFind out how many grams of protein you need per day based on body weight and activity level. Ranges from 0.8 to 2.2 g/kg with worked examples.
- TopWater Intake CalculatorEstimate your daily water needs from body weight and exercise time. Results in liters and 250 ml glasses, plus worked examples and hydration tips.