The WDF uses the following standards for play:
Height - The dart board is hung so that the center of the bull’s eye is 5ft 8in (1.73 m) from the floor. This is considered eye-level for a six foot man.
Distance - The ocher should be 7ft 9¼in (2.37 m) from the face of the board. Note that this is the face of the board, and should not include the distance to the wall (if the board protrudes from the wall).