BMI Calculator
Calculate your Body Mass Index from your weight and height, with a healthy-weight classification.
BMI Calculator
بی ایم آئی کیلکولیٹر
Results
Detailed Breakdown
| Category | BMI Range | |
|---|---|---|
| Underweight | Below 18.5 | |
| Normal weight | 18.5 – 24.9 | ← Your BMI |
| Overweight | 25.0 – 29.9 | |
| Obese | 30.0 and above |
About the BMI Calculator
Body Mass Index (BMI) is the most widely used screening tool to classify whether a person's weight is healthy for their height. It is calculated by dividing weight in kilograms by the square of height in metres. This calculator does the math instantly and places you in one of four categories: underweight, normal weight, overweight, or obese.
BMI matters because it correlates with health risk. A BMI in the normal range (18.5–24.9) is associated with the lowest risk of weight-related conditions such as type 2 diabetes, high blood pressure and heart disease. In Pakistan, where diabetes and hypertension rates are among the highest in the region, knowing your BMI is a simple first step toward managing those risks.
Enter your weight in kilograms and height in centimetres — the two measurements taken at any doctor's visit or gym. The classification bands used here follow the World Health Organization's international cut-offs, which are the standard for adult screening worldwide.
It is important to understand what BMI does not measure. It does not distinguish muscle from fat, so an athlete with high muscle mass can register as 'overweight' while being perfectly healthy. It also does not account for where fat is stored — abdominal fat carries higher cardiovascular risk than fat elsewhere. For a complete picture, pair BMI with waist circumference and, ideally, professional assessment.
If your BMI is outside the normal range, small sustainable changes matter most: balanced portions, reduced sugary drinks and fried foods, and regular physical activity. This calculator is a screening tool, not a diagnosis — always discuss your numbers with a doctor or qualified health professional before starting any programme.
How to calculate your BMI
- 1
Weigh yourself in kilograms using a reliable scale.
- 2
Measure your height in centimetres.
- 3
Enter both values in the calculator.
- 4
Read your BMI number and its category — underweight, normal, overweight or obese — updating live as you type.
Frequently Asked Questions
What is a healthy BMI?
A BMI between 18.5 and 24.9 is considered a normal weight range for most adults.
Is BMI accurate for everyone?
BMI is a screening tool, not a diagnosis. Athletes with high muscle mass may show a high BMI while being healthy, and BMI doesn't account for age, sex or body composition.
What is a healthy BMI range?
For most adults, a BMI between 18.5 and 24.9 is considered a normal, healthy range. Below 18.5 is underweight, 25–29.9 is overweight, and 30 or above is classified as obese by the World Health Organization.
Is BMI accurate for athletes and muscular people?
BMI does not distinguish muscle from fat, so muscular athletes may be classified as overweight despite low body fat. For them, body-fat percentage or waist measurement is a more meaningful metric.
Does BMI apply to children?
Adult BMI cut-offs do not apply to children and teenagers, whose healthy ranges vary by age and sex. For children, doctors use age- and sex-specific BMI percentiles, not the adult categories.
Why is BMI important in Pakistan?
Pakistan has high rates of obesity-related disease — diabetes, hypertension and heart disease. BMI is a quick, free way to identify risk early, which is especially valuable where routine health screening is limited.