BMI Calculator
Calculate your Body Mass Index
BMI Scale
About the BMI Calculator
The ToolsVera BMI calculator estimates your body mass index from your weight and height to help you understand where you sit in the underweight, normal, overweight or obese range. It is a quick first-look metric widely used by clinicians, coaches and health apps.
How to use the BMI Calculator
- Enter your weight: Type your current weight in kilograms.
- Enter your height: Type your height in centimetres.
- Read your result: Hit Calculate BMI to see your number and category instantly.
Why use our BMI Calculator?
- Instant results with a clear underweight/normal/overweight/obese label.
- Uses the standard WHO BMI formula trusted worldwide.
- No account and no data stored — completely private.
- Works on desktop and mobile in any browser.
Frequently Asked Questions
Is this BMI Calculator really free?
Yes. BMI Calculator on ToolsVera is 100% free to use with no signup, no hidden limits and no watermark added to your output.
What is a healthy BMI range?
For adults, the World Health Organization considers a BMI of 18.5–24.9 as the healthy range.
Does BMI work for athletes?
BMI does not distinguish muscle from fat, so highly muscular athletes can appear overweight even when they are healthy.
Is BMI accurate for children?
Children should use age- and sex-specific BMI-for-age charts instead of the adult cutoffs.
Is my data safe?
Yes. Files are processed on the server and automatically deleted — we never store your content.