Health & Fitness
BMI, calories, and other everyday health calculations.
BMI Calculator
Calculate your Body Mass Index from height and weight.
BMR Calculator
Estimate your Basal Metabolic Rate — the calories your body burns at rest.
TDEE / Calorie Calculator
Find your daily calorie needs to maintain, lose, or gain weight.
Body Fat Calculator
Estimate body fat percentage from tape-measure measurements (U.S. Navy method).
Ideal Weight Calculator
Estimate a reference body weight for your height (Devine formula).
Macro Calculator
Split your daily calories into protein, carb, and fat grams.
Protein Calculator
Estimate your daily protein target based on body weight and activity level.
Water Intake Calculator
Estimate how much water to drink daily based on your weight and activity.
Calorie Deficit Calculator
Calculate the daily calorie deficit needed to reach a target weekly weight loss rate.
Pregnancy Due Date Calculator
Estimate your due date, gestational age, and conception date from your last menstrual period.
Sleep Calculator
Find the best bedtime or wake-up time based on 90-minute sleep cycles.