BMI Calculator
Calculate Body Mass Index (BMI) online instantly. Check BMI category based on height and weight easily.
Last updated: 2026-05-20
Free Online BMI Calculator
Use this free online bmi calculator tool directly in your browser without installing software. Fast, mobile friendly and easy to use.
BMI Calculator
BMI Classification
| BMI Range | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 24.9 | Normal Weight |
| 25 – 29.9 | Overweight |
| 30 and above | Obesity |
About BMI
BMI helps estimate whether your body weight is appropriate for your height. It is widely used as a general health screening tool.
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About This Tool
About BMI Calculator
This free online BMI Calculator helps you calculate your Body Mass Index (BMI) using your height and weight instantly.
BMI is a common health indicator used to estimate whether a person has a healthy body weight for their height.
BMI Categories
- Underweight: Below 18.5
- Normal Weight: 18.5 – 24.9
- Overweight: 25 – 29.9
- Obesity: 30 and above
Frequently Asked Questions
What is BMI?
BMI stands for Body Mass Index, a measurement that compares weight to height.
How is BMI calculated?
BMI is calculated using the formula: weight (kg) ÷ height² (m²).
Is BMI accurate for everyone?
BMI is a general health indicator and may not account for muscle mass, age or body composition.
Is this BMI Calculator free?
Yes. This tool is completely free to use online.
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