Door Hinge Dimensions. When installing a 1 3 4 inches door that is 36inches wide buy a hinge size of 4 1 2inches. In general you ll want to use one hinge for every 30 inches of door height. The height of the door is used to determine how many butt hinges you need.
A dime match a 1 4 radius hinge and a nickel match a 5 8 radius hinge. Door hinges are measured by the dimensions when the hinge is open and lying flat.
A 3 1 2 x 3 1 2 hinge will be 3 1 2 high have a center pin and two plates that are approximately 1 1 2 wide.
With very few exceptions all standard door hinges are squares and sized in 1 2 increments ex. A correctly sized replacement hinge will fit into the recess mortise created in the door jamb and on the door for the original hinge. They can come with both square and rounded corners. Most residential doors use a 3 1 2 x 3 1 2 hinges.
