Standard Bathroom Door Size
A bathroom door needs to adhere to the same standard size considerations as any other interior door. It should be at least 80 inches high, and 24-36” wide. The thickness and design of the door should match it's door frame.
Bedroom door: the standard is 32-inch width and 80-inch height with one and three-eighth inch typical thickness. Double-door: this is often 60, 64, or 72 inches but there is no thickness standard.