A cardiopulmonary function evaluating apparatus includes: an electrocardiogram measuring unit which is configured to measure an electrocardiogram of a subject a photoplethysmogram detecting unit which is configured to detect a photoplethysmogram of the subject a heart rate calculating unit which is configured to calculate a heart rate (HR) of the subject based on the electrocardiogram a PWTT calculating unit which is configured to calculate a pulse wave transmission time (PWTT) of the subject based on the electrocardiogram and the photoplethysmogram an SV calculating unit which is configured to calculate a stroke volume (SV) of the subject based on the heart rate and the pulse wave transmission time and an outputting unit which is configured to output a state related to the stroke volume of the subject based on the stroke volume that is calculated by the SV calculating unit.
