BMI Calculator
Calculate your Body Mass Index (BMI) with height and weight
BMI Categories (WHO Classification)
Note: BMI is a screening tool and does not account for muscle mass, bone density, age, sex, or ethnicity. Athletes may have a high BMI despite low body fat. Consult a healthcare professional for a complete health assessment.
About BMI Calculator
- ✓100% free to use, no registration required
- ✓All processing happens in your browser - complete privacy
- ✓Instant results with real-time updates
- ✓Works offline once loaded
- ✓Mobile-friendly and responsive design
Frequently Asked Questions
Is this bmi calculator completely free?
Yes! This tool is 100% free to use with no hidden costs, registration requirements, or usage limits.
Is my data secure?
Absolutely. All processing happens entirely in your browser using JavaScript. Your data never leaves your device or gets sent to any server, ensuring complete privacy and security.
Do I need to create an account?
No account needed! Simply visit this page and start using the tool immediately. We believe in keeping things simple and accessible.
Does it work offline?
Once the page is loaded, the tool works completely offline since all processing happens in your browser. No internet connection is required for the tool to function.
How accurate are the calculations?
All calculations use standard JavaScript floating-point arithmetic, which provides accuracy up to 15-17 significant digits. Results are rounded appropriately for practical use.
Can I use these calculators for financial or medical decisions?
These tools are for informational and educational purposes. For important financial or medical decisions, always consult with qualified professionals who can consider your complete situation.
Do the calculators support different unit systems?
Yes, where applicable our calculators support both metric and imperial units. You can easily switch between systems to get results in your preferred format.