A convertible humidifier that includes a base portion that produces mist, a control panel that controls the production of the mist by the base portion, at least one reservoir detachably connectable to the base portion for holding water used to produce mist, and a nozzle configured to direct the mist. At least one reservoir includes a pass-through connection that provides a flow path for mist from the base portion to exit the humidifier through an opening on the reservoir. The nozzle is detachably connectable directly to the opening in a first operation mode, and the nozzle is connected to an extending portion which is detachably connected to the opening in a second operation mode.