Abstract: A multi-vortex flowmeter (1) includes vortex type detection means (7) including a measurement tube (4) provided in a flow channel (13) to allow a fluid to be measured to pass, a vortex generator (5) provided in the measurement tube (4) to face a flow of the fluid to be measured, and a vortex detector (6) for detecting a change based on a Karman vortex generated by the vortex generator (5), thermal type detection means (10) including a temperature sensor (8) and a heating temperature sensor (9), each protruding into the flow channel (13), and a flow rate converter (11), in which a pressure gauge (3) for measuring a pressure in a pipe wired together with the vortex detector (6) and the thermal detection means (10) is provided integrally with the flow rate converter (11).