Do all trimming and fitting on the door before marking your hinge.
How many hinges do you need on a closet door.
Some hinges will let the door open just beyond 90 but others offering a much greater degree of opening are available.
Place the doors face side down on a flat surface and align the doors at the top and bottom.
For example a 270 hinge will allow the door to swing back against the cabinet side.
The third hinge is centered between the top and bottom hinges.
Locate the door hinges 6 inches from the top of the doors and then every 31 inches.
Mark the location of the mounting screws drill pilot holes and mount the hinges with the screws provided.
Once you have determined how many interior and exterior doors you have along with the types and sizes of hinges you need for every door you are ready to go shopping.
For pricing and availability.
Rehang the doors and check their movement.
Take into account how far will the door need to open.
If you re using hinges that are smaller than 4 inches use one spring hinge on doors.
Doors up to 60 inches need 2 hinges.
Referring to door height.
Refer to the specifications that came with your hinges to determine how many spring hinges you need.
Now that you are educated on the hinge sizes hole patterns and types of hinges for residential use you need to start counting your doors.
As a general rule you will want to use 1 hinge per every 30 inches of door or fraction thereof.
Doors over 60 inches but not over 90 inches need to use 3 hinges.
You can get away with two hinges on a light hollow core door but will need at least three on solid core or exterior doors.
Many hinges per door.
How far or to what angle a hinge will allow a door to open is called degree of opening.