DIN 107 defines when a door has a left-hand hinge and when a door has a right-hand hinge.
To determine whether a door opens to the left or to the right, follow these steps:
Go to the side of the door where you can see the door hinges.
Stand in front of the door, facing it, with your body centered.
If the door hinges are on the left, the door is left-hinged according to DIN 107.
If the door hinges are on the right, the door is right-hinged according to DIN 107.