Question 1

What is BMI?

Accepted Answer

BMI (Body Mass Index) is a numerical value calculated from your weight and height. It is commonly used to classify whether a person is underweight, normal weight, overweight, or obese.

Question 2

How do I calculate BMI?

Accepted Answer

BMI is calculated by dividing your weight in kilograms by the square of your height in meters: BMI = weight (kg) / height² (m). For imperial units, the formula is: BMI = (weight in lbs / height in inches²) × 703.

Question 3

What is a healthy BMI?

Accepted Answer

A BMI between 18.5 and 24.9 is considered healthy. Below 18.5 is underweight, 25–29.9 is overweight, and 30 or above is classified as obese.

Question 4

Is this BMI calculator accurate?

Accepted Answer

This calculator uses the standard WHO BMI formula and is accurate for adults. Note that BMI does not account for muscle mass, age, or body composition, so it's best used as a general guideline.

BMI Calculator