BMI Calculator — Calculate Your Body Mass Index
Calculate your Body Mass Index (BMI) to find out if you are underweight, normal weight, overweight or obese.
BMI Calculator
About BMI Calculator
BMI Calculator is a completely free online tool from FastTools that helps you get work done faster — no software to install, no account required, and no watermarks on your output. All processing runs securely in your browser, so your files never leave your device.
Key Features
Supports both metric (kg/cm) and imperial (lbs/inches)
Instant BMI calculation with health category
WHO standard BMI ranges used
Works for adults of all ages
Free with no sign-up
Why Use BMI Calculator?
In today's fast-paced digital world, having access to reliable, free online tools is essential. BMI Calculator saves you time and money by providing professional-grade functionality directly in your browser. Whether you're a student, freelancer, small business owner, or enterprise professional, this tool is built to make your workflow faster and more efficient.
Unlike desktop software that requires installation and often comes with subscription fees, BMI Calculator is completely free and works on any device — desktop, tablet, or mobile. There's no learning curve, no sign-up process, and no limitations on how many times you can use it.
Privacy & Security
Your privacy is our top priority. All processing happens directly in your browser — files are never uploaded to our servers, never stored, and never shared with third parties. Once you close your browser tab, there is no trace of your data anywhere. This makes FastTools one of the safest online tools available.