FEV1 (Lung Function): Males, Age 40-49
What these numbers mean
A value around 3.97 L is typical (50th percentile) for males in this age group. Scores above about 4.31 L fall near the 75th percentile or higher, indicating above-average performance. Scores below about 3.63 L fall near the 25th percentile; about 75% of the reference population scored higher.
Also see: 30-39 · 50-59 · All ages
Data source: Quanjer et al. (GLI-2012) About this study
FEV1 (Lung Function) Respiratory Males 40-49
FEV1 FEV₁ forced expiratory volume lung function spirometry lung capacity pulmonary function breathing test airway function norms normative data normative values reference values percentiles benchmarks reference ranges standards FEV1 (Lung Function) Percentile Chart (L)
Poor 3.13 L
Below average 3.63 L
Average 3.97 L
Above average 4.31 L
Excellent 4.78 L
This percentile chart shows how common a value is, not whether it is healthy.