Standard Doorway Dimensions Guide
What is the standard doorway width?
Standard interior doorways are 32 inches wide (per IRC 2021 Section R311.2), exterior doors are 36 inches wide (IRC 2021 Section R311.1), and ADA-compliant doorways require a minimum 32-inch clear opening (ADA Standards Section 404.2.3).
Doorway dimensions follow building codes that ensure accessibility and safety. Understanding these standards helps you determine what furniture will fit through your doors and plan moves effectively.
Standard Doorway Dimensions
| Type | Width | Height | Source |
|---|---|---|---|
| Interior Standard | 32" | 80" | IRC 2021 Section R311.2 |
| Interior Narrow | 28" | 80" | IRC 2021 Section R311.2 |
| Exterior Standard | 36" | 80" | IRC 2021 Section R311.1 |
| ADA Compliant | 32" | 80" | ADA Standards Section 404.2.3 |
Doorway Types
Frequently Asked Questions
What is the minimum doorway width required by code?
The IRC 2021 requires a minimum 32-inch clear width for interior doors and 36 inches for the main exterior door. ADA accessibility standards also require a 32-inch minimum clear opening.
Can I widen my doorway for furniture delivery?
Yes, but it requires removing the door frame and may need a permit. A simpler solution is to remove the door temporarily, which adds 1.5-2 inches of clearance from the removed hinges and stops.
How do I measure actual doorway clearance?
Measure the clear opening between door stops (the wood strips the door closes against). This is typically 1-2 inches narrower than the rough opening or door frame width.
Related Dimensions
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