How is BMI calculated?
Divide weight in kilograms by height in meters squared. For example, at 60 kg and 1.65 m, BMI is about 22.0.
Free instant results
BMI Calculator
Enter your height and weight to see your BMI, where it falls under Chinese adult guidelines, and the healthy weight range for your height.
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Your numbers are calculated in this page only—they are never uploaded or saved.
cm
kg
The slider covers 25–200 kg. For weights over 200 kg, enter the number above; the maximum is 300 kg.
Formula: BMI = weight (kg) ÷ height² (m²)
Your BMI
22.0kg/m²
BMI is displayed to one decimal place, but the category is based on the unrounded value. Keep this difference in mind when your result is close to a cutoff.
<18.518.5–<2424–<28≥28
Healthy range
Your BMI is within the healthy range for Chinese adults. Keep up a balanced diet, regular physical activity, and consistent sleep.
Reference healthy weight range
Based on 18.5 ≤ BMI < 24; bounds are rounded inward to the nearest 0.1 kg
BMI categories for Chinese adults
Underweight< 18.5
Healthy range18.5 ≤ BMI < 24
Overweight24 ≤ BMI < 28
Obesity≥ 28.0
Before you use this result
BMI is an initial screening measure for adults aged 18 and over; it cannot determine body fat or disease risk on its own. This result should not be applied directly to children, teenagers, pregnant or postpartum people, athletes, or anyone with edema or unusually high muscle mass.
National Health Commission of China: Core Knowledge for Weight Management (2024 Edition) WHO: Obesity and overweight (international adult cutoffs) ↗How to calculate and use BMI
- Measure your height in centimeters and weight in kilograms, then enter them above. 1 kilogram equals 2 jin.
- Divide your height by 100 to convert centimeters to meters, then calculate: BMI = weight ÷ height squared.
- Compare the result with the Chinese adult categories, then interpret it alongside your waist measurement, weight trend, and personal health.
Example: at 165 cm and 60 kg, BMI = 60 ÷ (1.65 × 1.65) ≈ 22.0, which is within the healthy range for Chinese adults. At the same height, the reference weight range is about 50.4–65.3 kg, with bounds rounded inward to 0.1 kg.
FAQ
Common questions about BMI
What is a healthy BMI for adults?
Under Chinese adult guidelines, BMI < 18.5 is underweight, 18.5 ≤ BMI < 24 is healthy, 24 ≤ BMI < 28 is overweight, and BMI ≥ 28 is obesity. The category is based on the full value before the displayed result is rounded.
Is BMI suitable for everyone?
No. Children and teenagers need age- and growth-specific assessment. Pregnant or postpartum people, athletes, people with high muscle mass, and those with edema should also consider waist measurement, body fat, and clinical context.
Is BMI calculated the same way for men and women?
Yes. Adult men and women use the same BMI formula and the same Chinese adult categories shown here. BMI does not directly measure fat distribution, so the same BMI can still correspond to different body-fat percentages and waist measurements.
How are BMI, body-fat percentage, and ideal weight different?
BMI is a ratio of weight to height, while body-fat percentage is the share of your total weight that comes from fat; the two are not interchangeable. The range shown here is derived from the healthy BMI interval and is a reference, not a single ‘ideal weight’ everyone must reach.
Why do some BMI calculators use 25 and 30 as the cutoffs?
Different guidelines use different cutoffs. The WHO adult standard defines overweight as BMI ≥ 25 and obesity as BMI ≥ 30. This page uses the Chinese adult cutoffs of 24 and 28. Always check which standard a calculator uses before comparing results.
Now that you know your BMI, start with everyday eating
BMI is just one starting point for understanding your body. Continue with our nutrition articles, or browse the tools for meal plans and food-tracking resources that fit your needs.
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