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Analysis of 200,000+ anonymized BMI calculations on CalculatorApp.me reveals that the average calculated BMI is 27.4 (overweight range), with significant variation by age group (25-34: 25.8 vs 45-54: 29.1) and region (Mountain West: 25.9 vs Southeast: 28.8). Women use the BMI calculator 62% more than men and are more likely to also use related body composition tools. The data aligns closely with CDC NHANES survey results, validating self-reported calculator inputs as a reasonable proxy for population health metrics.
Across all 200,000+ sessions, the mean BMI was 27.4 with a standard deviation of 5.8. The median was 26.1, indicating a right-skewed distribution consistent with CDC population data. Only 32% of calculations fell within the "normal weight" range (18.5-24.9).
Users in the 18-24 age bracket showed the lowest average BMI (24.9), rising to 25.8 for 25-34, 27.6 for 35-44, 29.1 for 45-54, then declining slightly to 28.3 for 55+. This pattern mirrors NHANES data within 0.5 BMI points for all age groups.
State-level analysis revealed the Southeast (AL, MS, LA, TN, WV) averaging 28.8 BMI, while the Mountain West (CO, UT, MT) averaged 25.9. This 2.9-point gap translates to roughly 18-20 pounds for a person of average height and correlates with CDC obesity prevalence rankings.
Female-identified users accounted for 62% of BMI calculations, despite women comprising roughly 51% of the US population. Women were also 2.4x more likely to proceed to a second health calculator (body fat, calorie, or ideal weight) in the same session.
Anonymized BMI calculator inputs and results, aggregated by age group, gender selection, and state.