Compute Body Mass Index in metric or imperial units.
Free · Runs in your browser · Last updated
Body Mass Index calculator with metric (kg/cm) and imperial (lb/in) inputs. Shows category and healthy weight range.
All processing for BMI happens locally inside your browser using JavaScript. Your input is never uploaded to a server, logged, or shared with third parties.
Yes. BMI is completely free for both personal and commercial projects. There are no usage limits, no sign-up, and no premium tier.
All processing happens locally in your browser using JavaScript. Your input is never uploaded to our servers, logged, or shared with any third party.
Once the page has loaded, the tool runs entirely client-side. You can disconnect from the internet and it will keep working in the same browser tab.
BMI works in all modern browsers, including the latest versions of Chrome, Firefox, Safari, Edge, Brave, and Opera, on desktop and mobile.
No. BMI runs in any modern web browser with no installation, browser extension, or account required.