To provide a urine quantity measuring toilet bowl having a highly-accurate urine quantity measuring function having an automatic calibration function in accordance with the toilet bowl shape, in a toilet for general excretion.

This urine quantity measuring toilet bowl has a bowl surface for receiving urination from a user, where water storage is formed; a stored water level measuring means for measuring the stored water level on the bowl surface; and a urine quantity calculation means for converting a water level change from the stored water level measuring means caused by urination into the urine quantity. The toilet bowl is characterized by being equipped with a calibration curve drawing means for determining a calibration curve for calculating the urine quantity from a relation between a water storage quantity and the stored water level acquired by measuring by the stored water level measuring means, the stored water level when the water storage quantity is changed by a calibration water supply means and a calibration water removal means.