Health & Fitness Calculators

Body, nutrition and wellness calculators including BMI, calories and pregnancy planning.

8 calculators in this category

Calculate your Body Mass Index (BMI) from your height and weight in U.S. or metric units.

Estimate your daily calorie needs (TDEE) based on age, sex, height, weight, and activity level — using the Mifflin-St Jeor equation.

Calculate your daily protein, carbs, and fat targets based on your goal — cutting, maintenance, or bulking — using TDEE and popular macro splits.

Estimate your baby's due date from your last menstrual period (LMP) using Naegele's rule — the standard OB/GYN method in the U.S.

Estimate body fat percentage using the U.S. Navy method — just a tape measure, your height, and a few body circumferences.

Estimate how many ounces of formula your baby needs each day and per feeding, based on weight and age. Includes typical feeding-interval guidance.

Determine your body shape — apple, pear, hourglass, rectangle, or inverted triangle — from bust, waist, and hip measurements.

Find your ideal body weight using four classic medical formulas: Robinson, Miller, Devine, and Hamwi.