Dimensions (height|width at the bottom):

King: 3.75 / 1.3 inches
Queen: 3.25 | 1.3 inches
Rook: 2.25 | 1.25 inches
Bishop: 2.75 | 1.25 inches
Knight: 2.65 | 1.25 inches
Pawn: 1.75 | 1 inches