BMI Calculator
Check your Body Mass Index and find your healthy weight range
Normal
Overweight
Obese
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| Category | BMI Range | Status |
|---|---|---|
| Underweight | < 18.5 | Below Normal |
| Normal | 18.5 – 24.9 | Healthy |
| Overweight | 25.0 – 29.9 | Above Normal |
| Obese Class I | 30.0 – 34.9 | Moderately Obese |
| Obese Class II+ | ≥ 35.0 | Severely Obese |
How to Use the BMI Calculator
Enter your height, weight, age, and gender to calculate your Body Mass Index (BMI). The tool supports both Metric (kg/cm) and Imperial (lbs/ft) units. Your BMI is calculated using the standard formula and displayed with a visual gauge.
- Visual BMI gauge with color-coded categories
- Healthy weight range for your height
- BMI Prime and Ponderal Index
- Ideal weight calculation (Devine formula)
- Complete BMI category reference table
What is BMI?
Body Mass Index (BMI) is a measurement of body fat based on height and weight. It applies to adult men and women. BMI = weight (kg) / height² (m²). While BMI is a useful screening tool, it doesn’t directly measure body fat and should be considered alongside other health indicators.
Frequently Asked Questions
A BMI between 18.5 and 24.9 is considered healthy/normal for most adults. However, BMI doesn’t account for muscle mass, bone density, or fat distribution.
BMI may overestimate body fat in athletes and people with muscular builds, as it doesn’t distinguish between muscle and fat mass. Athletes should use additional methods like body fat percentage.
The BMI formula and categories are the same for both genders. However, women naturally carry more body fat, and our ideal weight calculation (Devine formula) uses different coefficients for men and women.