BMI
BMI = weight (kg) / height (m)^2
BMI & Body Fat Calculator
Instantly calculate your BMI and estimated body fat percentage. Enter height, weight, age, and gender to check your health indicators.
BMI & Body Fat
Health Analytics
Analyze your body data for health indicators.
BMI
22.9
Normal
Body Fat %
18.1%
성인 남녀 평균 공식 기준
BMI and estimated body fat give more context than body weight alone
This calculator uses height and weight to calculate BMI, then estimates body fat percentage with the Deurenberg equation using age and sex. BMI is a quick screening measure, but it does not capture muscle mass, fluid retention, pregnancy, growth stage, or body-fat distribution.
Calculation basics
Body fat estimate
1.20×BMI + 0.23×age - 10.8×sex value - 5.4
Categories
This page groups BMI by 18.5, 23, and 25 cutoffs for underweight, normal, overweight, and obesity.
How to use
- Select sex, then enter height, weight, and age.
- Read the BMI value together with the estimated body fat percentage.
- Interpret the result alongside waist size, activity level, recent weight change, and personal context.
Frequently asked questions
Can BMI alone define health status?
No. BMI is a screening number based only on height and weight, so it cannot distinguish muscle mass from fat mass.
Is the body fat percentage a measured value?
No. It is a statistical estimate based on BMI, age, and sex, not a direct body-composition test.
Does the same BMI rule apply to athletes?
People with higher muscle mass may have a high BMI without high body fat, so waist measurement and professional assessment can be more informative.
Results are general estimates and are not a substitute for professional medical advice, diagnosis, or treatment.