A pipe cutter includes a body and a cutting wheel unit. The body includes a slot, a transverse slot and a recessed area. The cutting wheel unit includes a shaft, a cutting wheel, a movable member and a resilient member. The shaft is pivotably connected to the transverse slot and includes a flange and an engaging groove. The cutting wheel is received in the slot and is pivotably connected to the shaft. The movable member is movably received in the recessed area and has an engaging portion which is engaged with the engaging groove of the shaft. The resilient member is biased between the recessed area and the movable member so that the shaft is restricted from being disengaging from the transverse slot by the movable member.
