BMI Calculator

Calculate your Body Mass Index and see your weight category.

What this tool does: This BMI Calculator instantly calculates your Body Mass Index (BMI) using standard WHO (World Health Organization) formulas. It tells you whether you are underweight, normal weight, overweight, or obese based on your height and weight.

Metric (kg, cm) Imperial (lbs, ft/in)

Weight (kg)

Height (cm)

Your BMI

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Frequently Asked Questions

How is BMI calculated?

BMI is calculated by dividing your weight in kilograms by the square of your height in meters (kg/m²). For pounds and inches, the formula is (lbs / in²) * 703.

What is a normal BMI?

According to the World Health Organization (WHO), a normal, healthy BMI range is between 18.5 and 24.9. Under 18.5 is considered underweight, 25-29.9 is overweight, and 30 or higher is obese.