Place the door handle at about 900 millimetres off the floor or wherever is comfortable for.
Bathroom door height off floor.
The standard recommendation for towel bar height is 48 from the floor to the center of the bar i tend to hang mine between 44 48 high.
Toilet bathroom building codes.
A 450 millimetre wide fixed panel and a 600 millimetre wide door panel work well for a typical 1500 millimetre tub.
The standard height of the rough opening for a door is the door height plus 2 5 8 inches.
The awi gives no minimum but a maximum of over 3 4 is unacceptable.
The standard i use is 1 2 over finish floors 3 4 is acceptable.
So says the building code.
The ceiling in your bathroom must be at least 80 inches at the front of the sink or toilet and inside the shower.
The shower door needs to have an opening clearance of at least 24 inches.
That is a lot of room for unlevel you have there.
To fix the issue the doors need to be removed bottom of the jambs cut and reset the door.
The additional room allows for a 3 4 inch top jamb a shim.
The height of common doors is 6 feet 8 inches.
The front of the toilet needs to have at least 21 inches of clearance.
This is because shower doors often are made of materials such as glass that can easily break and pose a danger.
At the back of the sink or toilet the ceiling height can be as low as 60 inches.
Interior door height off floor.
I just took a quick look at some of standards and regulations governing door undercut which is the distance between a door and finished floor as opposed to clearance which is door to sub floor.