Health & Fitness Calculators

Understand your body with free health and fitness calculators. Check your BMI and ideal weight, estimate the calories you burn with BMR and TDEE, measure body fat with the U.S. Navy method, find your heart rate training zones, or estimate an ovulation window and pregnancy due date.

9 free tools · no account required · works on any device.

BMI Calculator Free BMI calculator for adults. Enter your height in cm and weight in kg to get your body mass index and whether you're underweight, normal or overweight. BMR Calculator Free BMR calculator using the Mifflin-St Jeor equation. Find how many calories your body burns at rest from your gender, age, height and weight. Body Fat Calculator Free body fat percentage calculator using the U.S. Navy tape-measure method. Enter height, neck, waist and (for women) hip measurements in centimeters. Calorie Calculator Free calorie calculator: estimate your daily calories (TDEE) to maintain, lose or gain weight from your age, gender, height, weight and activity level. Heart Rate Calculator Free heart rate calculator: find your maximum heart rate and target heart rate zones for fat burning, cardio and peak training based on your age. Ideal Weight Calculator Free ideal weight calculator: estimate your ideal body weight with the Devine formula and see the healthy weight range for your height and gender. Ovulation Calculator Free ovulation calculator: estimate your ovulation day, most fertile days and next period date from the first day of your last period and cycle length. Pregnancy Due Date Calculator Free due date calculator: estimate your baby's due date, how many weeks pregnant you are and your current trimester from your last menstrual period. Water Intake Calculator Free water intake calculator: find how much water you should drink per day in liters, cups and ounces based on your weight, activity level and climate.

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