Health & Fitness Calculators
BMI, calories, body composition, pregnancy and training calculators.
Anorexic BMI Calculator
Calculate BMI with detailed underweight severity categories.
Army Body Fat Calculator
Estimate body fat percentage using the U.S. Army tape-test method.
BAC Calculator
Estimate blood alcohol content using the Widmark formula.
BMI Calculator
Calculate Body Mass Index and see your weight category.
BMR Calculator
Calculate your Basal Metabolic Rate — calories burned at rest.
Body Fat Calculator
Estimate body fat percentage using the U.S. Navy tape-measure method.
Body Surface Area Calculator
Calculate body surface area using the Mosteller formula (used for drug dosing).
Body Type Calculator
Estimate your body frame type (somatotype) from your wrist size and height.
Calorie Calculator
Estimate your daily calorie needs to maintain, lose or gain weight.
Calories Burned Calculator
Estimate calories burned during exercise using MET values.
Carbohydrate Calculator
Calculate a daily carbohydrate target from your calorie goal.
Conception Calculator
Estimate your most likely conception date.
Fat Intake Calculator
Calculate a daily fat intake target from your calorie goal.
Food Points Calculator
Estimate a points value for a food from its calories, sugar, saturated fat and protein.
GFR Calculator
Estimate kidney function (eGFR) using the 2021 CKD-EPI creatinine equation.
Healthy Weight Calculator
Find the healthy weight range for your height based on BMI.
Ideal Weight Calculator
Estimate a healthy target weight for your height using the Devine formula.
Lean Body Mass Calculator
Calculate lean body mass (everything except fat) using the Boer formula.
Macro Calculator
Split a daily calorie target into protein, carb and fat grams.
One-Rep Max Calculator
Estimate your one-rep max (1RM) from a weight and rep count.
Overweight Calculator
Find out how much above a healthy BMI range your current weight is.
Ovulation Calculator
Estimate your ovulation date and fertile window.
Pace Calculator
Calculate your running pace and speed from distance and time.
Period Calculator
Predict your next few period start dates.
Pregnancy Calculator
Track gestational age, trimester and due date from your last period.
Pregnancy Conception Calculator
Estimate your conception date from your due date.
Pregnancy Due Date Calculator
Estimate your baby's due date from your last menstrual period.
Pregnancy Weight Gain Calculator
Find the recommended pregnancy weight gain range for your pre-pregnancy BMI.
Protein Calculator
Calculate your daily protein target based on body weight and activity goal.
Target Heart Rate Calculator
Find your training heart-rate zones using the Karvonen formula.
TDEE Calculator
Calculate your Total Daily Energy Expenditure.