You will want to have enough hinges to keep the cabinet door stable. The appropriate number of hinges is determined by the door height and weight.
• If your cabinet doors are less than 40” high and weigh less than 11 pounds, two hinges will be sufficient. • For a cabinet door between 40” and 60” high and a weight of 12-20 pounds, use three hinges. • Four hinges are recommended for doors 60” - 80” and 29-33 pounds. • If your cabinet doors are 80” - 85” and weigh between 40 and 48 pounds, use five hinges.
This depends on the manufacturer. Read the product description carefully to see if the hinge you are looking at is sold individually.
There are three basic door types and you can tell based on appearance. Flush doors are inset into the frame so the door and the frame are flush with each other. Inset doors are when part of the door insets into the frame and part overlays the door. Overlay doors are when the back of the door is flat and overlays the frame.
Since cabinet door widths are not standard, there is no way to ensure that any included hardware will be the right size for your particular cabinets.
Most American companies measure drill centers in inches while European companies measure in millimeters. 3” or 5” centers are standard in the US and 96 millimeters (approximately 3 ¾ inches) are standard in Europe.
To convert millimeters to inches, divide the number of millimeters by 25.4. To convert inches to millimeters, multiply the number of inches by 25.4.