A work machine includes a body, a work implement, and a controller. The body includes a frame to which the work implement is attached, an operator's cab, and a plurality of liquid-sealed mounts that are installed at different positions of the frame and support the operator's cab. At least one of the plurality of liquid-sealed mounts includes a sensor that detects a liquid pressure of a sealed liquid. The controller calculates an inclination degree of the work machine with respect to a horizontal plane based on a result of the detection by the sensor.