BMI Calculator
Body Mass Index in metric or imperial units.
Units
BMI is a screening measure for adults. It can't tell muscle from fat and isn't meant for children or pregnancy, so ask a doctor for a full health check.
Your BMI
22.9
Healthy weight
Healthy weight
56.7–76.3
kg for your height
Your weight
In range
no change needed
BMI categories for adults
Weight ranges for your height (kg)
| Category | BMI | Weight for your height |
|---|---|---|
| Underweight | Below 18.5 | Below 56.7 |
| Healthy weightYou | 18.5 – 24.9 | 56.7 – 76.3 |
| Overweight | 25 – 29.9 | 76.6 – 91.6 |
| Obese | 30 or above | 91.9 or more |
Something not working right?
About this bmi calculator
Body Mass Index (BMI) is a quick screening measure that compares weight to height. Enter your height and weight in metric or imperial units to see your BMI, its category and the healthy weight range for your height.
How to use it
- 1Choose metric (cm, kg) or imperial (ft, in, lb).
- 2Enter your height and weight.
- 3See your BMI, its category and your healthy weight range.
Frequently asked questions
What is a healthy BMI?+
For most adults, a BMI between 18.5 and 24.9 is considered a healthy weight. Below 18.5 is underweight, 25–29.9 is overweight and 30 or above is obese.
How is BMI calculated?+
BMI is your weight in kilograms divided by your height in metres squared (kg/m²).
Is BMI accurate for everyone?+
No. BMI doesn't distinguish muscle from fat and isn't designed for children, pregnant people or very muscular athletes. Talk to a doctor for a full health assessment.