Garage Door Size Calculator
Garage Door Size Finder
Find the right standard garage door size for your opening
Garage Door Cost Estimate
Estimate the cost of a new garage door with installation
Formula
Headroom = 15" (standard) | Sideroom = 3.75" each side | Backroom = Door Height + 18"
Frequently Asked Questions
What is the standard garage door size?
Single car: 8' or 9' wide × 7' tall. Double car: 16' wide × 7' tall. These are the most common sizes, but doors are available from 8' to 20' wide and 7' to 10' tall.
How much headroom do I need for a garage door?
Standard sectional doors require 15 inches of headroom (space between the top of the opening and the ceiling). Low-headroom hardware is available for spaces with as little as 9.5 inches.
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