BMI Calculator
Calculate your Body Mass Index (BMI) and find out which weight category you fall into based on your height and weight.
Disclaimer
This calculator provides estimates for general information purposes only. Results are based on standard formulas and may not reflect your individual circumstances. Always consult a qualified professional for advice specific to your situation.
Frequently Asked Questions
What is a healthy BMI range?
Is BMI accurate for everyone?
What is BMI?
Body Mass Index (BMI) is a simple measure that uses your height and weight to estimate whether you are underweight, normal weight, overweight, or obese.
How this calculator works
BMI is calculated as weight (kg) divided by height (m) squared. This calculator supports both metric (cm/kg) and imperial (inches/lbs) units, converting automatically. The visual scale shows where your BMI falls across the spectrum from underweight (<18.5) to obese (30+), and the healthy weight range tells you the weight range that corresponds to a BMI of 18.5-25 for your height. Note: BMI is a screening tool, not a diagnostic — it doesn't account for muscle mass or body composition.
All calculations are performed in your browser — your data never leaves your device. Results are for general guidance only and should not be considered professional financial advice.
Built and maintained by Konstantin Iakovlev. Data sourced from the ATO and official Australian government sources.