All Health Calculators

BMI Calculator — Body Mass Index with Interpretation

Calculate your BMI instantly. Get WHO category, healthy weight range, BMI Prime, and AI-powered health interpretation — free, fast, and accurate.

BMR Calculator — Basal Metabolic Rate

Calculate your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor equation. Find how many calories your body burns at complete rest.

Body Fat Calculator — Estimate Your Body Fat %

Calculate body fat percentage using the US Navy method. Enter neck, waist, and hip measurements for an accurate body composition estimate.

Calorie Calculator — Daily Calorie Needs for Weight Loss & Gain

Calculate your daily calorie needs using the Mifflin-St Jeor equation. Get personalized targets for weight loss, maintenance, and muscle gain. Free, no sign-up.

Calorie Deficit Calculator — How Many Calories to Lose Weight

Calculate the exact calorie deficit needed to reach your weight loss goal. Based on TDEE with safe deficit recommendations from nutritionists.

Due Date Calculator — Calculate Your Baby's Due Date by LMP or Conception

Calculate your pregnancy due date using last menstrual period, conception date, or IVF transfer date. Get trimester dates and key milestones. Free & accurate.

Height Calculator

Ideal Weight Calculator

Macro Calculator — IIFYM Calories & Macros Free

Calculate your daily calories, protein, carbs, and fat macros using the Mifflin-St Jeor formula. Set your goal — lose fat, maintain, or build muscle — free and accurate.

Ovulation Calculator — Fertile Window & Cycle Tracker

Find your ovulation date and fertile window based on your last period and cycle length. Plan or track conception with accurate menstrual cycle predictions.

Pregnancy Calculator — Due Date, Weeks Pregnant & Trimester

Calculate your due date, current week of pregnancy, trimester, and key milestones. Based on last menstrual period or conception date. Free pregnancy tracker.

Sleep Calculator — Best Bedtime & Wake-Up Times by Sleep Cycles

Find the ideal bedtime or wake-up time based on 90-minute sleep cycles. Wake up refreshed by timing sleep to complete full REM cycles.

TDEE Calculator — Total Daily Energy Expenditure

Calculate your Total Daily Energy Expenditure (TDEE) based on your BMR and activity level. Know exactly how many calories you need per day.

Waist-to-Height Ratio Calculator — Cardiometabolic Risk

Calculate your waist-to-height ratio (WHtR). A better cardiometabolic risk marker than BMI for most adults. Instant risk zones + interpretation.