A router mounting system is disclosed. A preferred embodiment of the router mounting system includes a router assembly, a first sub-base, and a router table. The router assembly and first sub-base include interlocking radial projections, recesses and discontinuities such that the first sub-base can be firmly attached to the router assembly quickly and without the use of tools or fasteners. This allows a user to interchangeably use a single router either in the hand mode of operation or in the table mode of operation with only a few seconds required to change betweens modes of operation.