Weight and BMI
Is my weight average?
Compare adult weight by age and calculate BMI. The page separates a descriptive percentile from a medical screening category.
Weight and BMI calculator
BMI is a screening tool
Adult BMI groups are based on fixed cutoffs. The same BMI can reflect very different body composition, fitness, fat distribution, health history, or medication effects.
- Below 18.5: underweight screening range
- 18.5 to under 25: healthy-weight screening range
- 25 to under 30: overweight screening range
- 30 or higher: obesity screening range
Measured distribution
Adult male weight by age
A weight percentile describes the reference distribution. It is not a health score.
10th percentileMedian90th percentile
Why “average weight” is a weak goal
Weight is affected by height, age, muscle, fat mass, hydration, and health conditions. A change over time and its context can be more useful than closeness to the median.
For children and teenagers
Adult BMI categories do not apply. Youth BMI is interpreted by age and sex on growth charts. This site intentionally does not provide a youth weight-ranking tool.
Go to the youth-safe guide