BMI 계산기
키 대비 체중 상태를 파악하기 위해 체질량 지수를 계산하세요
What is BMI and how do you calculate it?
BMI (Body Mass Index) is calculated by dividing your weight in kilograms by your height in meters squared: BMI = kg/m². A BMI of 18.5-24.9 is considered normal weight. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.
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체질량 지수(BMI)는 키와 체중을 기반으로 체지방을 간단히 추정하는 수치입니다. 체중(kg)을 키(m)의 제곱으로 나눠 계산합니다. BMI가 체지방을 직접 측정하진 않지만, 체중이 건강에 어떤 영향을 미칠 수 있는지 파악하는 출발점이 됩니다. 전 세계 의료 전문가들이 체중 관련 건강 문제를 선별하는 도구로 활용합니다.
BMI 계산 방법
BMI 공식: BMI = 체중(kg) / 키(m)². 야드파운드법은 703을 곱합니다: BMI = 체중(lbs) / 키(in)² × 703. 결과는 저체중(18.5 미만), 정상(18.5-24.9), 과체중(25-29.9), 비만(30 이상)으로 분류됩니다. 이 범주는 잠재적 건강 위험을 파악하는 데 도움이 되지만, 근육량 등 개인차도 고려해야 합니다.
BMI의 한계
BMI는 유용한 선별 도구이지만 한계가 있습니다. 근육과 지방을 구분하지 못해 운동선수나 근육이 많은 사람은 건강해도 BMI가 높게 나올 수 있습니다. 또한 나이, 성별, 인종, 체지방 분포를 반영하지 않습니다. 더 정확한 건강 상태 파악을 위해 허리둘레, 체지방률, 전반적인 체력도 함께 확인하세요.
BMI vs BMR: What's the Difference?
BMI measures your weight relative to height to categorize your body size. BMR measures the calories your body burns at rest. BMI tells you if you're at a healthy weight; BMR tells you how much energy your body needs. Use both together for a complete picture of your health.
Frequently Asked Questions
What is a healthy BMI range?
A healthy BMI range is between 18.5 and 24.9. This range is associated with the lowest risk of weight-related health problems. However, BMI is just one indicator and should be considered alongside other health markers.
Is BMI accurate for athletes and muscular people?
BMI can overestimate body fat in athletes and muscular individuals because it doesn't distinguish between muscle and fat mass. If you have significant muscle mass, consider using body fat percentage measurements for a more accurate assessment.
How often should I check my BMI?
Checking your BMI monthly is sufficient for most people. Since BMI changes gradually with weight changes, weekly checks are unnecessary. Focus on long-term trends rather than daily fluctuations.
What should I do if my BMI is too high or too low?
If your BMI falls outside the normal range, consult a healthcare professional. For high BMI, focus on a balanced diet and regular exercise. For low BMI, ensure adequate nutrition and caloric intake. A personalized workout plan can help you reach a healthy weight.
Does BMI differ by age and gender?
Standard BMI categories apply to adults aged 20 and older regardless of gender. For children and teens, BMI is calculated the same way but interpreted using age- and sex-specific percentiles. Older adults may have slightly different healthy ranges.