Electric power tool

An electric power tool (1) includes a power supply (120), a motor (30) capable of being driven in a forward rotation mode or a reverse rotation mode, and a voltage step-up unit (100) capable of performing a voltage step-up operation to raise a voltage supplied from the power supply (120) and supply a raised voltage (VO) to the motor (30). The voltage step-up unit (100) is configured to change the voltage step-up operation in accordance with whether a rotation mode of the motor (30) is the forward rotation mode or the reverse rotation mode.