BMI Calculator
Calculate your Body Mass Index (BMI) instantly. Get weight category, ideal weight range, and health insights.
<18.5 Normal
18.5–24.9 Overweight
25–29.9 Obese
≥30
| BMI Range | Category | Risk |
|---|---|---|
| < 18.5 | Underweight | Nutritional deficiency |
| 18.5 – 24.9 | Normal weight | Minimal risk |
| 25.0 – 29.9 | Overweight | Moderate risk |
| 30.0 – 34.9 | Obese Class I | High risk |
| 35.0 – 39.9 | Obese Class II | Very high risk |
| ≥ 40.0 | Obese Class III | Extremely high risk |
How to Use BMI Calculator
BMI Calculator — Check Your Body Mass Index
Your Body Mass Index (BMI) is a key indicator of whether your weight is healthy for your height. Use our free BMI Calculator to instantly check your BMI and understand what it means for your health. Supports both metric and imperial measurements.
BMI Categories Explained
| BMI Range | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 24.9 | Healthy Weight |
| 25.0 – 29.9 | Overweight |
| 30.0 and above | Obese |
BMI for Asians and South Asians
The World Health Organization notes that South Asians (including Pakistanis) may have higher health risks at lower BMI values. Some health guidelines suggest that South Asians be screened for health risks at BMI ≥ 23 (overweight) and ≥ 27.5 (obese).
Frequently Asked Questions
BMI (Body Mass Index) is a measurement of body fat based on height and weight. It is calculated as weight (kg) ÷ height² (m²). BMI is widely used as a screening tool for weight categories.
For adults, a BMI of 18.5–24.9 is considered healthy. Below 18.5 is underweight, 25–29.9 is overweight, and 30 or above is obese. These ranges are for adults aged 20 and older.
BMI is a useful screening tool but has limitations. It does not measure body fat directly and may overestimate fat in muscular people or underestimate it in older adults. Consult a doctor for a full health assessment.
Our BMI calculator shows the healthy weight range for your height. Generally, a BMI of 18.5–24.9 is healthy. Use the calculator to find the specific weight range for your height.
The standard BMI categories are the same for men and women. However, women typically have more body fat than men at the same BMI. Some doctors use body fat percentage for a more accurate assessment.