Region HLT · 10 tools
Health tools
BMI, metabolism, sleep, pregnancy, and cycle calculators
BMI Calculator
Check your body mass index (BMI), weight category and healthy weight range from height and weight.
Sleep Calculator
Use 90-minute sleep cycles to find bedtimes and wake-up times that leave you refreshed.
Ideal Weight Calculator
Calculate your standard weight and healthy weight range from height and sex.
BMR & TDEE Calculator
Calculate your basal metabolic rate and daily calorie needs (TDEE) from age, height and weight.
Body Fat Calculator
Calculate body fat percentage (US Navy method) and fat mass from waist and neck measurements.
Due Date Calculator
Calculate your due date and how many weeks pregnant you are from your last period.
Period & Ovulation Calculator
Calculate your next period, ovulation day and fertile window from your last period and cycle.
Water Intake Calculator
Calculate how much water to drink a day from your weight, exercise and the weather.
Target Heart Rate Calculator
Calculate target heart rates for training zones 1–5 from your age and resting heart rate.
Steps to Calories Calculator
Calculate distance walked and calories burned from your steps, height and weight.