Standard Interior Door Dimensions
Standard interior doors in US residential construction are 32 inches wide (clear opening) and 80 inches tall. This is the most common doorway width you'll encounter when moving furniture between rooms.
How wide is a standard interior door?
Standard interior doors in US homes are 32 inches wide and 80 inches tall, per IRC 2021 Section R311.2.
Source: IRC 2021 Section R311.2
Dimensions
What Fits Through a 32" Door?
Frequently Asked Questions
What is the actual clear opening of a 32-inch interior door?
A 32-inch door provides about 30-31 inches of clear width once you account for the door stop molding (¾") and hinges. Removing the door temporarily adds ~1.5 inches of clearance.
What furniture fits through a standard 32-inch interior door?
Most furniture fits through a 32" door: twin/full mattresses flat, queen/king mattresses on edge, nightstands, dressers, most chairs, and sofas turned on their side. Items wider than 30" in their smallest dimension may need the door removed.
Can I make a standard interior door wider?
Yes, but widening a doorway requires removing the frame and may need a permit if structural headers are involved. A simpler option is removing the door and trim, which adds 1.5-2 inches to the opening.
Related Doorways
Related Calculators
Calculate Your Doorway Fit
Use our doorway calculator with your actual measurements for an accurate fit analysis.
Calculate Doorway Fit