BMI Calculator
Find your Body Mass Index (BMI) in seconds. Enter your height and weight in pounds and feet, or switch to kg and cm.
– BMI
BMI is a quick screening number. It doesn't tell muscle from fat, so athletes and very muscular people often score "overweight". It isn't meant for children or pregnancy.
Numbers are the start, not the plan.
Get a free consultation: Maxim will look at your goals, movement and schedule and show you exactly where to start.
Book a free consultationWhat your BMI means
| BMI | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 24.9 | Healthy weight |
| 25 – 29.9 | Overweight |
| 30 and above | Obese |
These are the adult categories used by Health Canada and the World Health Organization.
How BMI is calculated
BMI = weight (kg) ÷ height (m)². In pounds and inches: BMI = 703 × weight (lb) ÷ height (in)².
The limits of BMI
BMI is a useful first check, but it can’t tell muscle from fat. Muscular people and athletes often show as “overweight” while being very fit. Waist size, strength, energy and how you move matter just as much. For children and teens, doctors use age- and sex-specific growth charts instead.
Next step: a plan that fits you
Try the calorie calculator to find how much to eat for your goal, browse the exercise library, or let coach Maxim build your plan.