BMI Calculator
Check your Body Mass Index in seconds
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<18.5
18.5-24.9
25-29.9
30+
Body Mass Index (BMI) is a quick screening measure that relates your weight to your height. This BMI calculator takes your weight in kilograms and height in centimeters and instantly tells you your BMI value along with which standard category — underweight, healthy, overweight, or obese — you fall into.
How to Use the BMI Calculator
- 1Enter your weight in kilograms.
- 2Enter your height in centimeters.
- 3Click Check BMI to see your result.
- 4Compare your BMI value against the standard category chart shown below the calculator.
Why Use This Tool
- Instant BMI calculation using the standard WHO formula.
- Color-coded result card makes your category easy to read at a glance.
- Includes the full BMI category reference table.
- Private — your health data never leaves your browser.
Frequently Asked Questions
What is a healthy BMI range?
A BMI between 18.5 and 24.9 is generally classified as a healthy weight range for most adults, according to WHO guidelines.
Is BMI accurate for everyone?
BMI is a useful general screening tool, but it doesn't distinguish between muscle and fat, so it can be less accurate for athletes, bodybuilders, older adults, or pregnant women. Consult a healthcare professional for a full assessment.
How is BMI calculated?
BMI is calculated as weight in kilograms divided by height in meters squared (kg/m²).