About the BMI Calculator
The BMI Calculator is a free online tool that lets you calculate Body Mass Index and category. With it you can get fast, precise answers for everyday and professional calculations — there's nothing to install and no account to create. Just open the tool, do what you need, and you're done.
It's part of the Calculators collection on OmniTools, a growing platform of 131+ free, privacy-first tools built for speed and a great experience on every device.
Also known as: body, mass, weight, health.
Why use the BMI Calculator?
- Instant results as you type
- Simple, distraction-free interface
- Free and unlimited
- Works offline once loaded
When to use it
- Quick everyday math
- Work and study calculations
- Verifying numbers on the go
How to use the BMI Calculator
- Open the BMI Calculator. Open the BMI Calculator on this page — there is nothing to install and no account needed.
- Add your input. Type or paste your input into the tool.
- Adjust options. Choose any options you need — the BMI Calculator updates instantly.
- Get your result. Click the action button to download or copy your result. It is 100% free.