Tools > BMI Calculator

BMI Calculator: Check Your Body Mass Index

Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is BMI = kg/m2 where kg is a person's weight in kilograms and m2 is their height in meters squared.

A BMI of 25.0 or more is overweight, while the healthy range is 18.5 to 24.9. BMI applies to most adults 18-65 years.

BMI Calculator

Use this calculator to check your body mass index (BMI).

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in

Note: BMI is a screening tool, not a diagnostic of body fatness or health. A complete health assessment requires additional measurements like body fat percentage and muscle mass to determine actual health status.

Your Body Mass Index (BMI) is --

According to your inputs, your weight is in the
--category

You
Underweight(Below 18.5)
Healthy(18.5 - 25.0)
Overweight(25.0 - 30.0)
Obese(30.0 & Above)

For your height, a healthy weight would be between

-- to -- pounds

The Science

Common Questions About BMI

Is BMI accurate for everyone?
BMI is a useful screening tool but does not diagnose body fatness or health. It does not account for muscle mass, bone density, overall body composition, and racial and sex differences. Athletes with high muscle mass may have a high BMI but low body fat.
What are the risks of high BMI?
People who are overweight or obese are at increased risk for many diseases and health conditions, including high blood pressure, Type 2 diabetes, coronary heart disease, stroke, gallbladder disease, osteoarthritis, sleep apnea, and chronic inflammation.
Should I check my waist circumference too?
Yes. Measuring waist circumference helps screen for possible health risks that come with overweight and obesity. If most of your fat is around your waist rather than at your hips, you're at a higher risk for heart disease and type 2 diabetes.