BMI Calculator

Our BMI Calculator provides a quick health assessment. Here's how to use it:

Step 1: Enter your height in centimeters or feet/inches.

Step 2: Enter your weight in kilograms or pounds.

Step 3: Click 'Calculate' to see your BMI value and category.

BMI Categories: - Underweight: Less than 18.5 - Normal: 18.5 - 24.9 - Overweight: 25 - 29.9 - Obese: 30 or more

The calculator also shows your healthy weight range based on your height.

BMI is calculated using a simple formula:

BMI = weight (kg) / height² (m²)

Or with imperial units: BMI = (weight (lb) × 703) / height² (in²)

Example: A person weighing 70kg and 1.75m tall: BMI = 70 / (1.75)² = 70 / 3.0625 = 22.86 (Normal Weight)

Note: BMI doesn't directly measure body fat and may not be accurate for athletes or older adults.

The Body Mass Index (BMI) calculator estimates your BMI using your height and weight and classifies you as underweight, normal weight, overweight, or obese based on World Health Organization guidelines.

BMI is a quick screening tool, not a full diagnosis. It doesn't distinguish between muscle and fat, so athletes may show a higher BMI despite low body fat, while older or inactive adults can have a “normal” BMI but higher body fat.

Very high BMI is associated with increased risk of conditions like heart disease, type 2 diabetes, high blood pressure, joint problems, sleep apnea, and some cancers, while very low BMI can be linked to malnutrition, weaker bones, reduced immunity, and fertility problems. For people under 18, age- and sex-specific BMI percentiles should be used instead of adult BMI ranges.