BMI Calculator
Calculate Body Mass Index using height and weight with health category results.
What is the BMI Calculator Tool?
Our free online BMI Calculator calculates your Body Mass Index (BMI) instantly. It uses metric or imperial measurements to help you assess your weight category.
How to Use BMI Calculator
- 1Choose metric (cm/kg) or imperial (in/lbs) units.
- 2Enter your height and weight values.
- 3Review your BMI score and weight category chart.
Common Use Cases
- •Checking weight categories for fitness planning.
- •Monitoring body index changes during workouts.
- •Assessing general health metrics.
🔒 Privacy & Processing Notice
This tool processes all data entirely in your browser using client-side JavaScript. Your input is never uploaded to any server, ensuring 100% privacy and confidentiality. No data is stored, logged, or transmitted.
Frequently Asked Questions
What is Body Mass Index (BMI)?
BMI is a calculation that estimates body fat category based on your height and weight.
What are the standard BMI weight categories?
Underweight: under 18.5, Normal weight: 18.5 to 24.9, Overweight: 25 to 29.9, Obese: 30 and above.
Is BMI accurate for everyone?
BMI is a general reference. It may not reflect body fat distribution accurately for athletes with high muscle mass.
Is BMI Calculator free to use?
Yes, BMI Calculator is 100% free with no signup required.
Is my data safe?
All processing happens in your browser. Your data never leaves your device.
Does it work offline?
Once the page loads, BMI Calculator works entirely client-side.