BMI Calculator
Use this free tool to check your Body Mass Index (BMI) and find out if you are at a healthy weight.
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Hire Apex MarketplacesUnderstanding Your BMI Result
The Body Mass Index (BMI) is a measure used to determine whether a person has a healthy weight for their height. The World Health Organization (WHO) has defined specific categories to assess health risks associated with weight.
| BMI Range | Category | Health Risk |
|---|---|---|
| Below 18.5 | Underweight | Malnutrition Risk |
| 18.5 – 24.9 | Normal Weight | Low Risk |
| 25.0 – 29.9 | Overweight | Moderate Risk |
| 30.0 and Above | Obesity | High Risk |
How is BMI Calculated? (Formulas)
Our calculator does the math for you, but if you are curious about the science, here is the manual calculation method:
- Metric System: Weight (kg) divided by Height (m) squared.
- Imperial System: (Weight (lbs) divided by Height (inches) squared) multiplied by 703.
Frequently Asked Questions (FAQ)
For most adult women, a BMI between 18.5 and 24.9 is considered ideal. However, age and muscle mass can influence what is “healthy” for you.
Not always. BMI does not distinguish between muscle and fat. Athletes with high muscle mass may be classified as “overweight” despite having low body fat.