To provide a pipe cutter which can carry out the cutting preperation of a relatively light pipe easily.

To one side free end of a rotary clamp arm 37, a pipe dead weight support roller 36 in order to support the pipe to cut from the lower side is rotatably installed, and to the other side free end, a clamp roller 39, in order to clamp the pipe to cut from the upper side upper than the horizontal surface, passing through the center axis of the pipe, between a stationary support roller 4 and the roller 36, is installed rotatable, and a cutter mechanism in order to cut the piped is installed rotatable to a frame 3. And when the pipe to cut is loaded to the support roller 36 of the arm 37, the arm 37 is rotated by making the rotating center axis as the center, and the roller 36 supports the pipe together with the stationary support roller 4 from the lower side, and the clamp roller 39 clamps the pipe from the upper side between the stationary support roller 4 and the support roller 36.