Know your numbers.
Enter your details once — every calculator updates instantly. Results are estimates, not medical advice.
Sex
BMI calculator
Body Mass Index compares your weight to your height.
Uses your weight and height above.
Enter weight and height
Ideal body weight
Estimated using the Devine formula, based on height and sex.
Uses your height and sex above.
Enter height
Daily intake
Calories you need per day to maintain your weight (Mifflin-St Jeor).
Enter your details
Calories burned
Estimated energy burned during exercise, based on activity and weight.
Enter weight and minutes