Hinges are mechanisms that allow doors to open and close. The hinges support the door and provide a swinging action. They come in different styles and finishes to accent home decor. Identifying whether a door is right or left-hinged is important for installation. There are a few ways you can tell the direction of a door hinge. This includes the door's swing, hinge placement and knob location. After determining the hinge direction, you will know where to re-install an existing door or where to install a new door.
Stand on the side of the door that swings away from you.
Close the door.
Open the door and observe which direction the door swings toward.
Identify the door hinge. If the door swings to the right when you open it, it is a right-hinged door. If the door swings to the left when you open it, it is a left-hinged door.
Observe the door casing. This is the framing the door hinges are mounted to. Left-hinged doors have the hinges on the left of the casing while right-hinged have the hinges on the right.
Look at the knob. The knob is typically placed on the side of the door opposite the hinge direction. For example, a right-hinged door will have the knob on the left side of the door. A left-hinged door will typically have the knob on the right side of the door.