An induction heating cooker comprising: a plurality of heating coils; a plurality of inverter circuits that supply a high-frequency current to the heating coils; output current detecting means for detecting an output current of each of the inverter circuits; power detecting means (6,7) for detecting input power or output power of each of the inverter circuits; load determining means for performing a load determination on a basis of the output current detected by the output current detecting means and the input power or the output power detected by the power detecting means; and control means for performing individual drive control of each of the inverter circuits, wherein, after a heating start instruction is received, when neighboring heating coils among the plurality of heating coils are wound in opposite circumferential directions, the control means drives, in a case where two or more inverter circuits of the plurality of inverter circuits are driven at the same time, the inverter circuits at the same driving frequency, acquires output currents of the driven inverter circuits, and performs drive control for the inverter circuits in such a manner that a phase difference between the acquired output currents is reduced, and the load determining means repeatedly performs, under a state where the control means performs drive control for the inverter circuits so that the phase difference between the output currents is reduced, the load determination on a basis of the output current detected by the output current detecting means and the input power or the output power detected by the power detecting means for the driven inverter circuits, and when neighboring heating coils among the plurality of heating coils are wound in the same circumferential directions, the control means drives, in a case where two or more inverter circuits of the plurality of inverter circuits are driven at the same time, the inverter circuits at the same driving frequency, acquires output currents of the driven inverter circuits, and performs drive control for the inverter circuits in such a manner that a phase difference between the acquired output currents approaches 180 degrees, and the load determining means repeatedly performs, under a state where the control means performs drive control for the inverter circuits so that the phase difference between the output currents approaches 180 degrees, the load determination on a basis of the output current detected by the output current detecting means and the input power or the output power detected by the power detecting means for the driven inverter circuits. a plurality of heating coils; a plurality of inverter circuits that supply a high-frequency current to the heating coils; output current detecting means for detecting an output current of each of the inverter circuits; power detecting means (6,7) for detecting input power or output power of each of the inverter circuits; load determining means for performing a load determination on a basis of the output current detected by the output current detecting means and the input power or the output power detected by the power detecting means; and control means for performing individual drive control of each of the inverter circuits, wherein, after a heating start instruction is received, when neighboring heating coils among the plurality of heating coils are wound in opposite circumferential directions, the control means drives, in a case where two or more inverter circuits of the plurality of inverter circuits are driven at the same time, the inverter circuits at the same driving frequency, acquires output currents of the driven inverter circuits, and performs drive control for the inverter circuits in such a manner that a phase difference between the acquired output currents is reduced, and the load determining means repeatedly performs, under a state where the control means performs drive control for the inverter circuits so that the phase difference between the output currents is reduced, the load determination on a basis of the output current detected by the output current detecting means and the input power or the output power detected by the power detecting means for the driven inverter circuits, and when neighboring heating coils among the plurality of heating coils are wound in the same circumferential directions, the control means drives, in a case where two or more inverter circuits of the plurality of inverter circuits are driven at the same time, the inverter circuits at the same driving frequency, acquires output currents of the driven inverter circuits, and performs drive control for the inverter circuits in such a manner that a phase difference between the acquired output currents approaches 180 degrees, and the load determining means repeatedly performs, under a state where the control means performs drive control for the inverter circuits so that the phase difference between the output currents approaches 180 degrees, the load determination on a basis of the output current detected by the output current detecting means and the input power or the output power detected by the power detecting means for the driven inverter circuits.