This calculator finds your Body Mass Index (BMI) from height and weight, shows the weight category, and estimates the calories you burn per day. Switch between metric and imperial units.
BMI is weight in kilograms divided by height in metres squared. Daily calories use the Mifflin-St Jeor equation for your resting metabolism, multiplied by an activity factor from sedentary to very active.
BMI bands are: under 18.5 underweight, 18.5–24.9 normal, 25–29.9 overweight, 30+ obese. BMI is a rough screen that does not account for muscle or build, so use it as a guide and consult a professional for health decisions.