An inverter device configured to use an inverter to convert direct-current voltage supplied from a rectifying component to alternating-current voltage and apply the alternating-current voltage to an inductive load, the inverter device comprising: a shunt resistor provided on a direct-current link (801, 802) that interconnects the rectifying component and the inverter; a first terminal configured to pass current to the shunt resistor; a second terminal to which the current from the shunt resistor flows; a printed board on which is formed a conductive pattern including a first conductive pattern component that connects the shunt resistor and the first terminal to each other and a second conductive pattern component that connects the shunt resistor and the second terminal to each other, wherein the first conductive pattern component as seen from a position facing the shunt resistor from the first terminal includes a first central region connecting right-side end and a left-side end of the shunt resistor to a right-side end and a left-side end of the first terminal, a first right-side protruding region jutting out on the right side from the first central region, and a first left-side protruding region jutting out on the left side from the first central region, the first right-side protruding region and the first left-side protruding region being different in shape and area, characterized in that the ratio (SA2/SA1) of the area of the first left-side protruding region to the area of the first right-side protruding region is in the range of 0.6 to 1.6. a shunt resistor provided on a direct-current link (801, 802) that interconnects the rectifying component and the inverter; a first terminal configured to pass current to the shunt resistor; a second terminal to which the current from the shunt resistor flows; a printed board on which is formed a conductive pattern including a first conductive pattern component that connects the shunt resistor and the first terminal to each other and a second conductive pattern component that connects the shunt resistor and the second terminal to each other, wherein the first conductive pattern component as seen from a position facing the shunt resistor from the first terminal includes a first central region connecting right-side end and a left-side end of the shunt resistor to a right-side end and a left-side end of the first terminal, a first right-side protruding region jutting out on the right side from the first central region, and a first left-side protruding region jutting out on the left side from the first central region, the first right-side protruding region and the first left-side protruding region being different in shape and area, a first central region connecting right-side end and a left-side end of the shunt resistor to a right-side end and a left-side end of the first terminal, a first right-side protruding region jutting out on the right side from the first central region, and a first left-side protruding region jutting out on the left side from the first central region, the first right-side protruding region and the first left-side protruding region being different in shape and area, characterized in that the ratio (SA2/SA1) of the area of the first left-side protruding region to the area of the first right-side protruding region is in the range of 0.6 to 1.6.