Health & Fitness Calculators
BMI, calorie, BMR, and body fat calculators to support your health and fitness goals.
13 free tools available⭐ Top Picks in Health & Fitness
BMI Calculator
Calculate your Body Mass Index (BMI) instantly. Enter your height and weight to find out if you are …
Use FreeCalorie Calculator
Calculate your daily calorie needs based on age, weight, height, gender, and activity level using th…
Use FreeIdeal Weight Calculator
Calculate your ideal body weight using Robinson, Miller, Devine, and BMI formulas. Get a range and a…
Use FreeMacro Calculator
Calculate daily macronutrient targets (protein, carbs, fat) based on total calories and fitness goal…
Use FreeOvulation Calculator
Calculate your estimated ovulation date and fertile window based on your last menstrual period and c…
Use FreePregnancy Due Date Calculator
Calculate your pregnancy due date using Naegele rule from your last menstrual period. Shows gestatio…
Use FreeAll Health & Fitness Calculators
BMI Calculator
Calculate your Body Mass Index (BMI) instantly. Enter your height and ...
Use FreeBMR Calculator
Calculate your Basal Metabolic Rate (BMR) — the number of calories y...
Use FreeBody Fat Calculator
Calculate your body fat percentage using the US Navy method. Get your ...
Use FreeCalorie Calculator
Calculate your daily calorie needs based on age, weight, height, gende...
Use FreeDog Age Calculator
Convert dog age to an approximate human-age equivalent by size....
Use FreeIdeal Weight Calculator
Calculate your ideal body weight using Robinson, Miller, Devine, and B...
Use FreeMacro Calculator
Calculate daily macronutrient targets (protein, carbs, fat) based on t...
Use FreeOvulation Calculator
Calculate your estimated ovulation date and fertile window based on yo...
Use FreePregnancy Due Date Calculator
Calculate your pregnancy due date using Naegele rule from your last me...
Use FreeProtein Calculator
Estimate daily protein needs from body weight and activity or training...
Use FreeSleep Calculator
Calculate the best bedtime or wake-up time based on 90-minute sleep cy...
Use FreeTDEE Calculator
Calculate your Total Daily Energy Expenditure (TDEE) using the Mifflin...
Use FreeWater Intake Calculator
Calculate your daily water intake requirement based on body weight, ac...
Use FreeAbout Health & Fitness Calculators
Track and improve your health with our evidence-based health calculators. From BMI to daily calorie needs to body fat percentage, each tool uses medically recognised formulas.
Our BMI calculator supports both metric (kg/cm) and imperial (lbs/inches) units and uses the standard WHO BMI formula to classify your weight as underweight, normal, overweight, or obese.
The calorie calculator uses the Mifflin-St Jeor equation — the most accurate formula for estimating daily energy needs — combined with your activity level to calculate your TDEE.