Use the online calculator for body mass index and surface area to quickly calculate your body mass index (BMI) and surface area (BSA) with one click to help you understand your physical health and grasp whether your weight is reasonable and whether your surface area is normal.
What is BMI and body surface area?
BMI is the Body Mass Index (Body Mass Index), referred to as the body mass index. It is a common evaluation indicator used to measure the body’s weight and health status. BMI is calculated based on the ratio of height to weight, which can reflect whether your weight is suitable for your height and whether there are problems with obesity or weight loss.
Body Mass Index BMI calculation formula: BMI = 体重(kg) / 身高(m)^2 .
Body surface area (BSA) is a comprehensive assessment based on factors such as height and weight, as well as age and gender. It can reflect the relationship between your body surface area and your weight and whether there are malnutrition or overnutrition problems.
**There are many formulas for calculating body surface area BSA, namely:
- Simple body surface area calculation formula (BSA):
BSA = [体重(kg) x 身高(cm) / 3600]1/2 - Weight less than 30kg. Formula for calculating the surface area of children:
儿童体表面积= 体重* 0.035 + 0.1 - Formula to calculate the body surface area of children with weight of 30kg or above:
儿童体表面积= 1.05 + (体重- 30) * 0.02 - Formula for calculating dosage for children:
小儿用药剂量= (成人剂量* 小儿体表面积) / 1.7 - DuBois and DuBois body surface area calculation formula:
体表面积（BSA）S(m2) = (W0.425 x H 0.725) x 0.007184 - General formula for human surface area in China:
体表面积（BSA）S(m2) = 0.0061 × 身高（cm）+ 0.0124 × 体重(kg) - 0.0099 - General Stevenson formula for adults and children:
体表面积S(m2) = 0.0061 × 身高(cm) + 0.0128 × 体重(kg) - 0.1529
BMI+BSA Online Calculator
We provide quick and convenient BMI and surface area calculation tools to get results by simply entering basic information such as height, weight, age and gender. Whether you want to lose weight, stay healthy, or better manage your health, our BMI and surface area calculation tools will provide you with useful information and guidance. Come and try it!
Body Mass Index and Body Surface Area Online Calculator
Special reminder: All calculation results must be re-checked and cannot be used as the only basis for guiding treatment decisions.
Adult BMI Reference Standard
What is the normal range of BMI? What is the calculation result of the Body Mass Index (BMI)? How many are exceeding the standard? Below are the reference standards for adult BMI:
| Chinese BMI Standard (Unit: kg/m²) | World Health Organization BMI Standards (Unit: kg/m²) | |
|---|---|---|
| Too light | < 18.5 | <18.5 |
| standard | 18.5 ~ 23.9 | 18.5 ~ 24.9 |
| overweight | 24.0 ~ 27.9 | 25 ~ 29.9 |
| obesity | ≥ 28.0 | ≥ 30 |
Why do you need to calculate BMI and body surface area?
Understanding your BMI and surface area can help you better grasp your health and take appropriate health management measures. For example, if your BMI is too high, it means you may be at risk of obesity. You need to pay attention to controlling your diet and increasing exercise to reduce the possibility of chronic diseases such as heart disease and diabetes. If your BMI is too low, it means you may be at risk of being thin. You need to pay attention to increasing nutrition and maintaining your strength to improve your immunity and resistance. If your body surface area is too high, it means that your body surface area does not match your weight. You need to pay attention to adjusting your diet and lifestyle to achieve a balanced state. If your body surface area is too low, it means that your body surface area is not in harmony with your weight. You need to pay attention to replenishing your energy and moisture to maintain your normal body temperature and metabolism.
More Health Management Online Calculator:
-Basic metabolic rate (BMR) online calculator
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