Now that you have figured out what type of Door Hinge Corners your existing hinges have, you can use this page to figure out what size and how many hinges you need.

When replacing an existing door hinge finding the size is as simple as taking a quick measurement. With very few exceptions, all standard door hinges are squares and sized in 1/2" increments (EX: 3 Inches, 3-1/2 inches, 4 Inches). Most residential doors use a 3-1/2" x 3-1/2" hinges. Some larger residential doors, usually entry doors, use a 4" x 4" hinge.

Hinge Size Guidance:
If you are installing a new door or just want to see if your existing hinges are the proper size, you need to know the Thickness and Width of the door. Here's a quick chart for guidance:

Now, just a few things to remember. The above chart is just a guide, it is not a set in stone template.

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Door Hinge Locations:
Most doors you see will have only 3 hinges, but taller doors can sometimes have 4. Here we list the basics. These are the U.S. standards commonly used in construction:
1. The top hinge usually is installed 5-inches down from the top jamb / edge of the door.
2. The bottom hinge is installed 10 inches up from the bottom edge of the finished floor.
3. The third hinge is centered between the top and bottom hinges.

Many Hinges Per Door:
As a general rule you will want to use 1 hinge per every 30 inches of door or fraction thereof.
Referring to door height:
1. Doors up to 60 inches need 2 hinges.
2. Doors over 60 inches, but not over 90 inches, need to use 3 hinges.
3. Doors over 90 inches but not over 120 inches, 4 hinges are recommended.

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