BMI Calculator
Calculate Body Mass Index (BMI) and check weight category
Body Details
E.g. 5 feet 7 inches = 170.2 cm
Enter your measurements and click Calculate BMI
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BMI Scale
Underweight
Normal
Overweight
Obese
<18.5
18.5–24.9
25–29.9
≥30
How to Use
- Enter your Height in cm or feet/inches.
- Enter your Weight in kilograms.
- Click Calculate BMI — your BMI value, weight category, and healthy weight range are shown.
What is BMI?
Body Mass Index (BMI) is a simple numerical measure of body fat based on height and weight. It is widely used by doctors, insurance companies, and governments as a quick screening tool for weight-related health risks.
BMI = Weight (kg) ÷ Height (m)²
BMI Categories (Asian / Indian Standards)
| BMI Range | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 22.9 | Normal / Healthy |
| 23.0 – 24.9 | Overweight |
| 25.0 – 29.9 | Obese Class I |
| 30.0 and above | Obese Class II |
Note: Asian populations (including Indians) have higher metabolic risk at lower BMI values. Indian health guidelines use 23+ as overweight and 25+ as obese, compared to the global thresholds of 25 and 30.
Limitations of BMI
- BMI doesn't distinguish between muscle and fat — athletes may show "overweight" BMI.
- Doesn't account for fat distribution (belly fat is more dangerous than hip fat).
- Use BMI alongside waist circumference and body fat % for a complete picture.
Frequently Asked Questions
No — Asian populations (including Indians) develop weight-related health risks at lower BMI values. The WHO recommends Asian cutoffs: 23+ as overweight (vs 25 globally) and 25+ as obese (vs 30 globally). Our calculator uses Indian/Asian standards.
Yes. Abdominal (visceral) fat is metabolically more dangerous than subcutaneous fat. Waist circumference above 90 cm (men) or 80 cm (women) indicates central obesity even with a normal BMI — a risk factor for diabetes and heart disease. BMI alone doesn't capture this.
18.5–22.9 is considered the healthy/normal range for Indians. Below 18.5 is underweight (linked to nutritional deficiencies). 23–24.9 is overweight. 25+ is obese by Indian standards.
Not the same way. For children and teenagers (2–19 years), BMI-for-age percentiles are used — not absolute values. The same BMI value can be healthy for a 10-year-old but overweight for a 15-year-old, depending on sex and growth stage.