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Lung Capacity Calculator
Calculate estimated normal pulmonary function values (FVC and FEV1)
Pulmonology Guidelines: Predicted normal values for forced vital capacity (FVC) and forced expiratory volume in 1 second (FEV1) are estimated using standard regression equations based on age, height, and biological sex. Enter patient parameters below.
Patient Parameters Input
Calculation Results
⚠️ Not medical advice. For pulmonology, respiratory therapy, and clinical reference only. Diagnosis of respiratory conditions, spirometry interpretation, and assessment of lung function must be evaluated and supervised strictly by a qualified physician or pulmonologist.