BMI Calculator
Calculate your Body Mass Index and see your weight category.
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Category
Healthy Weight Range
BMI Categories
| BMI | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 24.9 | Normal weight |
| 25.0 – 29.9 | Overweight |
| 30.0+ | Obese |
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Frequently Asked Questions
How is BMI calculated?
BMI = weight (kg) / height (m)². For imperial: BMI = (weight in lbs / height in inches²) × 703.
Is BMI accurate for everyone?
BMI doesn't distinguish between muscle and fat. Athletes may have a high BMI but low body fat. It's best used as a general screening tool.
What is a healthy BMI?
A BMI between 18.5 and 24.9 is generally considered healthy. However, optimal BMI varies by individual factors.
How does BMI differ for children?
Children's BMI is calculated the same way but interpreted using age- and sex-specific percentile charts rather than fixed categories.
Should I use BMI or body fat percentage?
Body fat percentage is more accurate but harder to measure. BMI is a quick screening tool. Both have value when used together.