Calculate your body mass index, view your BMI category, estimate a healthy weight range for your height, and learn how BMI is commonly used and interpreted.
Metric formula:
BMI = weight (kg) ÷ height (m)2
US formula:
BMI = [weight (lb) ÷ height (in)2] × 703
This calculator automatically uses the correct formula depending on which unit system you select.
A BMI from 18.5 to 24.9 is generally considered within the healthy range for adults. This page also estimates the weight range that matches that BMI range at your height.
This is a general estimate and does not replace advice from a healthcare professional.
BMI gives a quick estimate of whether body weight is low, moderate, or high relative to height. It is useful for screening, but it does not tell the whole story.
People with more muscle mass can have a higher BMI without excess body fat. A person can also fall in a standard BMI range and still want to review other health markers such as activity level, diet, waist size, and blood pressure.
For most adults, a BMI between 18.5 and 24.9 is considered a healthy range.
BMI is useful for general screening, but it does not directly measure body fat or overall health.
Children and teens are usually assessed using BMI-for-age percentiles rather than adult BMI categories.
Yes. Athletes and muscular individuals can have a higher BMI even when body fat levels are not high.