BMI Calculator
Check your Body Mass Index (BMI) to find out if you are at a healthy weight. Fast, private, and accurate.
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Your Results
Your BMI is
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18.5
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Healthy Weight Range for your height:
Enter your height and weight to see your BMI results.
About the BMI Calculator
Body Mass Index (BMI) is a simple and widely used mathematical formula that estimates human body fat based on an individual's weight and height. Our free online calculator allows you to instantly check your BMI category and discover the ideal weight range for your specific height.
BMI Categories & Meanings
| BMI Range | Category | Risk Level |
|---|---|---|
| Less than 18.5 | Underweight | Possible nutritional deficiency and osteoporosis. |
| 18.5 - 24.9 | Normal Weight | Low risk. Healthy range. |
| 25.0 - 29.9 | Overweight | Moderate risk of heart disease and diabetes. |
| 30.0 or higher | Obese | High risk of cardiovascular diseases. |
Frequently Asked Questions
No. While BMI is a great general screening tool, it does not distinguish between muscle mass and fat. For example, a heavily muscled athlete might have a "high" BMI but very low body fat. It also doesn't consider age, gender, or bone structure.
The ideal weight range is reverse-calculated using the normal BMI range (18.5 to 24.9). We multiply the square of your height by 18.5 to get the minimum weight, and by 24.9 to get the maximum healthy weight.
No, your privacy is fully protected. All calculations run on your device's browser (client-side) instantly. No weight or height information is sent to our servers.