BMI Calculator — Body Mass Index Calculator

What is BMI Calculator?

BMI (Body Mass Index) is a simple measurement that uses your height and weight to estimate whether you're a healthy weight. It's calculated by dividing your weight in kilograms by your height in meters squared.

The BMI categories are: Underweight (below 18.5), Normal weight (18.5–24.9), Overweight (25–29.9), and Obese (30 and above).

While BMI is widely used as a screening tool, it has limitations. It doesn't distinguish between muscle and fat mass, and may not accurately reflect health status for athletes, elderly individuals, or pregnant women.

How to Use

1. Enter your weight in kilograms
2. Enter your height in centimeters
3. Click Calculate
4. Your BMI will be displayed with the corresponding category

Examples

Example 1

A person weighing 70 kg and 175 cm tall has a BMI of 22.9 — Normal weight.

Example 2

A person weighing 90 kg and 165 cm tall has a BMI of 33.1 — Obese.

FAQ

What is a healthy BMI?

A healthy BMI is between 18.5 and 24.9. This range is associated with the lowest risk of weight-related health problems.

Is BMI accurate for athletes?

BMI may overestimate body fat in athletes and muscular individuals since muscle weighs more than fat. Body fat percentage or waist circumference may be better measures for these groups.

How often should I check my BMI?

Checking your BMI once every few months is sufficient. Focus on long-term trends rather than daily fluctuations.

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