All Health Calculators
Free health calculators for BMI, BMR, body fat, ideal weight, TDEE, and more. Based on WHO and medical standards.
11 free 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.
Calculate →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.
Calculate →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.
Calculate →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.
Calculate →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.
Calculate →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.
Calculate →Ideal Weight Calculator — Find Your Healthy Weight
Calculate your ideal body weight using 4 medical formulas (Robinson, Miller, Devine, Hamwi). Get your healthy weight range by height and sex.
Calculate →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.
Calculate →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.
Calculate →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.
Calculate →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.
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