Average BMI for 31-Year-Old Female Adults
Understanding where your BMI falls compared to the population can provide valuable health insights. This page presents detailed percentile data for Female adults aged 31, based on authoritative WHO/CDC NHANES data.
Key Statistics
Percentile Distribution
This chart shows how BMI is distributed among Female individuals aged 31. Values range from 18.5 kg/m² at the 5th percentile to 36.0 kg/m² at the 95th percentile, covering 90% of the population.
Understanding Your Results
Below Median
If your BMI is below 24.5 kg/m², you are in the lower half of the population for your demographic.
At Median
A BMI of approximately 24.5 kg/m² places you right at the median, matching half the population.
Above Median
With a BMI above 24.5 kg/m², you exceed the median for your demographic group.
BMI & Health Assessment
BMI provides a general indicator of body composition for Female individuals aged 31. While useful for population-level assessments, individual factors like muscle mass and body composition should also be considered.
BMI Categories
Compare Across Ages
See how BMI benchmarks change with age by exploring data for adjacent age groups.
Frequently Asked Questions
What is the average BMI for a 31-year-old Female?
The median BMI for Female individuals aged 31 is 24.5 kg/m². This means half of the population has a value above this, and half below. The median is often more representative than the mean for population health data.
What is a healthy BMI range?
For this demographic, the normal range (25th to 75th percentile) is 21.6 to 28.6 kg/m². However, 'healthy' depends on individual factors. Consult a healthcare provider for personalized guidance.
Where does this BMI data come from?
Our benchmark data is derived from authoritative sources including the World Health Organization (WHO) and CDC NHANES studies. These represent large, representative population samples.
How can I improve my BMI?
Changes to BMI should be approached thoughtfully and, when health-related, under medical guidance. Factors like nutrition, physical activity, and overall lifestyle can influence certain metrics.
Data Sources & Methodology
Our benchmark data is compiled from the following authoritative sources:
- WHO - Global health metrics and population data across 194 member states
- CDC NHANES - NHANES (National Health and Nutrition Examination Survey) data from the United States
This data is for informational purposes only and should not replace professional medical advice. Individual health assessments should be conducted by qualified healthcare providers.
Calculate Your Percentile
Enter your measurements to see exactly where you stand compared to the population.