Health and fitness calculators
BMI, BMR, calories, body fat, pregnancy, heart rate and other health calculators.
BMI CalculatorCalculate your body mass index (BMI) from height and weight and see which weight range you fall in.BMR CalculatorEstimate your basal metabolic rate (BMR): the calories your body uses at complete rest.Calorie CalculatorEstimate how many calories you need each day to maintain, lose or gain weight.Body Fat CalculatorEstimate body fat percentage with the US Navy tape-measure method.Ideal Weight CalculatorFind an ideal body weight for your height using the Devine formula and the healthy BMI range.Water Intake CalculatorEstimate how much water to drink each day from your weight and exercise time.Pregnancy Due Date CalculatorEstimate your due date, how many weeks pregnant you are and key dates from your last period.Ovulation CalculatorEstimate your ovulation day, fertile window and next period from your cycle.Period CalculatorPredict the dates of your next three periods from your cycle length.Macro CalculatorSplit your daily calories into grams of carbohydrate, protein and fat.Protein Intake CalculatorEstimate your daily protein target from body weight and activity.Lean Body Mass CalculatorEstimate lean body mass with the Boer formula.Waist to Hip Ratio CalculatorCalculate your waist-to-hip ratio and the health risk band it falls in.Waist to Height Ratio CalculatorCheck your waist-to-height ratio, a simple indicator of abdominal fat.Target Heart Rate CalculatorFind your maximum heart rate and training zones with the Karvonen method.Pace CalculatorCalculate running or walking pace and speed from distance and time.Calories Burned CalculatorEstimate calories burned in an activity from its MET value, your weight and the time.Steps to KM CalculatorConvert steps into distance and estimate the calories burned walking.Body Surface Area CalculatorCalculate body surface area (BSA) with the Mosteller formula.Sleep CalculatorFind the best times to fall asleep so that you wake at the end of a 90-minute sleep cycle.One Rep Max CalculatorEstimate your one-repetition maximum from a weight you can lift for several reps.Weight Loss CalculatorEstimate how long it takes to reach a goal weight at a steady daily calorie deficit.Blood Pressure Category CalculatorSee which category a blood pressure reading falls into.Blood Donation Date CalculatorFind the next date you can donate whole blood after your last donation.Height ConverterConvert height between feet and inches, centimetres and metres.