About BMI Calculator

BMI Calculator is a free, privacy-friendly online tool that helps you calculate your Body Mass Index quickly and accurately.

Why We Built This

Many BMI calculators are cluttered with ads or require sign-ups. We wanted a clean, fast, no-nonsense tool that works on any device and respects your privacy.

Features

• Supports both metric (cm/kg) and imperial (ft-in/lbs) units

• Visual BMI gauge for easy interpretation

• Healthy weight range calculation

• BMI Prime and Ponderal Index

• 100% client-side — no data sent to any server

Privacy

All calculations happen entirely in your browser. We never store, send, or track your health data. Read our privacy policy for details.