QUICK GUIDE
How to use this bmi calculator
Enter your height in centimetres and weight in kilograms, then calculate. BMI is calculated as weight in kilograms divided by height in metres squared.
UNDERSTANDING THE RESULT
Understanding adult BMI ranges
For adults, commonly used BMI ranges are below 18.5 (underweight), 18.5–24.9 (healthy-weight range), 25–29.9 (overweight range), and 30 or above (obesity range). BMI is a screening measure, not a diagnosis, and does not directly measure body fat or overall health. Children, teens, pregnant people and some athletes need different interpretation.
HELP & ANSWERS
Frequently asked questions
Are these calculator results guaranteed?
No. Results are estimates based on the inputs and stated assumptions.
Can I use the calculator on a phone?
Yes, the calculator is designed to adapt to mobile and desktop screens.
Do I need to install anything?
No installation is required; use the calculator in your browser.