FEV1/FVC Ratio Calculator
Pulmonary function assessment and airway obstruction evaluation
About FEV1/FVC Ratio
The FEV1/FVC ratio is a key measure in pulmonary function testing that helps diagnose obstructive lung diseases like COPD and asthma.
Pulmonary Function Results
FEV1/FVC Ratio: -
Predicted FEV1/FVC: -
Interpretation: -
Clinical Significance: -
FEV1/FVC Interpretation
- Normal: ≥ 0.70 (70%)
- Mild obstruction: 0.60-0.69
- Moderate obstruction: 0.50-0.59
- Severe obstruction: < 0.50
- Consider clinical context
- Compare with predicted values