CalKit

BMI Calculator

Check your body mass index (BMI) and weight status.

cm
kg
BMI (체질량지수)
과체중
24.2kg/m²
24.2
저체중정상과체중비만고도비만

상세 정보

BMI 수치24.22
판정과체중
정상 체중 범위53.5 ~ 66.2 kg
현재 키170 cm
현재 체중70 kg

Overview

Body Mass Index (BMI) is calculated by dividing weight (kg) by height (m) squared. It is a widely used international standard for screening overweight and obesity. According to WHO standards, a BMI below 18.5 is underweight, 18.5-24.9 is normal, 25-29.9 is overweight, and 30 or above is obese.

Formula

BMI = weight (kg) / height (m)² | Example: 70 kg, 175 cm → BMI = 70 / 1.75² = 70 / 3.0625 ≈ 22.86 (Normal range)

How to Use

  1. 1Enter your weight in kilograms.
  2. 2Enter your height in centimeters (automatically converted to meters).
  3. 3Click the 'Calculate' button.
  4. 4Review your BMI value and the corresponding weight classification.

Tips

  • ✔BMI may overestimate body fat in muscular individuals such as athletes.
  • ✔The Asia-Pacific BMI cutoffs differ from Western standards; overweight starts at BMI 23 for Asian populations.
  • ✔BMI alone is not a comprehensive health indicator — consider body fat percentage and waist circumference as well.
  • ✔This calculator is for informational purposes only. Consult a healthcare professional for an accurate health assessment.

FAQ

Q. My BMI is normal but I have belly fat. Should I be concerned?

Yes. A normal BMI does not rule out excess visceral fat, which increases metabolic disease risk. Measure your waist circumference (risk thresholds: men ≥ 90 cm, women ≥ 85 cm in Asian populations) and consider a body fat assessment.

Q. Can the same BMI standards be used for children?

No. For children and adolescents under 18, age- and sex-specific BMI percentiles are used. Please use the 'Children BMI Calculator'.

Q. What is the difference between BMI and body fat percentage?

BMI is simply a ratio of weight to height, whereas body fat percentage measures the proportion of fat in total body weight. Body fat percentage provides a more precise health indicator.

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