General requirements for access recommends that the height of the handle should fall within 900mm and 1100mm above the floor.
Standard size for exterior door handle.
The standard door thickness is 1 inches.
Regardless of the size of the door the australian standard as 1428 1 design for access and mobility part 1.
It is more important that your door handles be consistent than that they match the standard door handle height.
This makes the changing of exterior door handles easy enough for most people to do.
Measure your existing door knobs from the floor up.
Measure from the center of the door knob hole to the edge of the doorway to find the size of the door set.
If they are more than inch off the standard height you will want to match all of the pre existing door handle heights in your home.
Is now very common for newer homes and stock exterior doors are also commonly available in 30 and 32 inch widths.
You can check this by measuring from the centre of the spindle to the centre of the key hole.
In metric terms this size is 57mm.
The standard size for an exterior door is 80 inches by 36 inches which is 6 ft 8 inches by 3 ft.
Stock exterior doors are also commonly available in 30 inch and 32 inch widths.
Standard door handle height.
96 inches or 8 ft.
This is around waist height for the average adult.
Over the years front door handles for wooden doors have tended to keep to a standard lever to lock size.
This creates a more harmonious appearance.
Some door manufacturers carry stock doors in 7 foot and 8 foot heights and door widths from 24 inches to 42 inches.