BMI Calculator
Check your Body Mass Index with support for common height and weight units.
About BMI Calculator Online
Calculate your Body Mass Index (BMI) in metric or imperial units. See your BMI category: underweight, normal, overweight, obese. This page is part of UtilsNest's Utility Tools, so you can move between related workflows without leaving the browser.
How to use it
- Enter or adjust the values, text, or file input needed for BMI Calculator Online.
- Review the generated result instantly and compare outputs until the result fits your use case.
- Copy, download, or continue to a related utility tools workflow if you need the next step.
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Open Utility ToolsFrequently Asked Questions
How is BMI calculated?
BMI = weight (kg) / height² (m²). In imperial: BMI = (weight in lbs / height in inches²) × 703.
What is a healthy BMI range?
Underweight: below 18.5. Normal: 18.5–24.9. Overweight: 25–29.9. Obese: 30 and above.
Is BMI an accurate measure of health?
BMI doesn't account for muscle mass, age, or fat distribution. Athletes may show high BMI despite being very healthy. It's a screening tool, not a diagnosis.