How Tall Is a Door? Understanding Standard and Custom Door Heights

2026-05-13

The question “how tall is a door” is straightforward, but the answer depends on the type, purpose, and regional standards. In most residential and commercial buildings, door height is standardized for convenience and safety.

Here’s the core answer in a clear, quick reference:

Door Type	Standard Height (inches)	Standard Height (mm)	Notes
Interior Residential	80 in	2032 mm	Most bedrooms, bathrooms, and closets
Exterior Residential	80–96 in	2032–2438 mm	Front doors may be taller for aesthetics
Commercial	84 in	2134 mm	Offices, retail, and public buildings
ADA Compliant	80 in	2032 mm	Wheelchair accessibility standards
Custom Doors	Variable	Variable	Often taller for luxury homes or architectural style

Standard Interior Door Heights

Most interior doors in homes are 80 inches (6’8”) tall. This is the default size in the U.S., U.K., and many European countries. Some variations exist:

Shorter doors (78 inches): Often used in older homes or tight spaces.
Taller doors (84 inches / 7’0”): Popular in modern and luxury homes for a more spacious feel.

Exterior Door Heights

Exterior doors are slightly taller than interior doors to improve appearance and accommodate thresholds. Common sizes include:

80 inches (6’8”) – Standard front door height for residential buildings.
84–96 inches (7’0”–8’0”) – Premium doors for aesthetics or large entryways.

Exterior doors may also include transoms or sidelights, which can affect overall height.

Important notes:

Fire doors often follow commercial height standards.
Security doors might have custom dimensions to fit reinforced frames.

Commercial and Public Building Door Heights

Commercial buildings follow stricter codes. For instance:

84 inches (7’0”) is typical for office spaces.
ADA-compliant doors: Minimum 80 inches for accessibility.
Industrial or warehouse doors: Can exceed 10 feet for machinery and vehicle access.

Custom Door Heights

For luxury homes, architectural projects, or industrial use, custom doors are increasingly popular. Factors influencing height:

Ceiling height – Taller ceilings often require 8-foot or 9-foot doors.
Design style – Modern or minimalist designs favor taller doors.
Material limitations – Heavy wooden or steel doors may need special frames.
Functional requirements – Sliding doors, folding doors, or pivot doors may vary.

Custom Door Feature	Recommended Height
Floor-to-ceiling doors	96–120 in (8–10 ft)
Pivot doors	84–108 in (7–9 ft)
Sliding barn doors	84–96 in (7–8 ft)
Industrial warehouse doors	120–240 in (10–20 ft)

How to Measure a Door Height

Measuring door height is simple but must be accurate:

Use a tape measure from floor to top of the frame (not just the door slab).
Check the threshold if it’s an exterior door.
Consider the headroom for doors with transoms or panels.
Account for clearance for sliding or folding mechanisms.

Conclusion

So, how tall is a door? The most common answer is 80 inches (6’8”) for residential doors, but exterior, commercial, and custom doors can range from 78 inches to over 240 inches. Door height is influenced by function, design, and regulatory standards.

When planning a project, always consider: