BMI Calculator

Calculate your Body Mass Index (BMI).

Your Body Mass Index 22.0

Normal Weight

Height

Weight (kg)

<18.5 18.5 - 25 25 - 30 >30

About BMI Calculator

Body Mass Index (BMI) is a standard screening metric for health categories. RealOnlineTools provides an on-device Quetelet index calculator.

Our tool supports metric (kg/cm) and imperial (lbs/inches) inputs, updating your BMI value and classification instantly in your browser memory.

How do I accurately calculate my BMI manually?

In metric, the formula is: BMI = weight (kg) / height (m)^2. In imperial, the formula is: BMI = (weight (lbs) / height (inches)^2) * 703.

What is the difference between BMI and body fat percentage in health?

BMI measures body mass relative to height, while body fat percentage measures the actual ratio of adipose tissue to overall weight.

Is an online health calculator accurate for BMI checking?

Yes, our tool computes the mathematical Quetelet index precisely. However, it does not distinguish between muscle mass and fat tissue.