Health

BMI, Calorie, BMR, Body Fat, Pregnancy Due Date and more

BMI Calculator

Enter height and weight to get your Body Mass Index (BMI), your underweight, normal, overweight or obese class and your healthy weight range.

Calculate daily calorie needs (TDEE) from age, sex, height, weight and activity level. Free calorie calculator for weight loss or weight gain.

Calculate your Basal Metabolic Rate (BMR) from age, sex, height and weight with the Mifflin-St Jeor formula. See the calories you burn at rest.

Calculate body fat percentage from waist, neck, hip and height with the U.S. Navy method. Free body composition calculator for men and women.

Calculate ideal body weight from height and sex with the Devine, Robinson, Miller and Hamwi formulas. Free healthy target weight range tool.

Enter your last menstrual period or conception date to get your estimated due date (280 days), current pregnancy week and trimester.

Enter your wake-up or bedtime to get optimal sleep and wake times based on 90-minute sleep cycles, so you wake between cycles feeling refreshed.

Calculate your recommended daily water intake from body weight and activity level. Free hydration calculator to stay properly hydrated.

Get daily macronutrient targets in grams for carbs, protein and fat from your age, weight, activity level and goal. Free macro split calculator.

Calculate your five heart rate training zones from age and resting heart rate using the Karvonen formula. Free target heart rate calculator.

Enter pre-pregnancy weight, height and current week to see the IOM-recommended gain range for your BMI category and track it week by week.

Enter distance and time to get your running pace per km or mile. Convert between pace, time and distance to plan race and marathon goals.

Enter waist and hip measurements to calculate your waist-hip ratio (WHR) and assess abdominal obesity and heart risk. Free WHR calculator.

Enter weight lifted and reps to estimate your 1RM with the Epley, Brzycki and Lander formulas. Free one-rep max calculator for strength.

Enter your last period date and cycle length to predict your ovulation day and fertile window. Free ovulation calculator for cycle tracking.