What is the standard garage door size?

The most common single garage door is 9 ft wide by 7 ft tall. The most common double door is 16 ft wide by 7 ft tall. Single doors also come in 8x7 and 10x7; double doors come in 15x7 and 18x7. Newer homes increasingly use 8 ft tall doors to fit trucks and SUVs.

What size is a two-car garage door?

A two-car (double) garage door is typically 16 ft wide by 7 ft tall, or 16x8 in newer construction. Some builders use 15x7 or 18x7. Always measure the finished opening rather than assuming — a 1-inch difference changes which door fits.

How do I measure for a garage door?

Measure five things: the finished opening width, the finished opening height, headroom (from the top of the opening to the ceiling or lowest obstruction), side room (from each side of the opening to the nearest wall), and backroom (the depth from the opening into the garage). Standard torsion setups need about 12 inches of headroom, 3.75 inches of side room per side, and door height plus 18 inches of backroom.

How much headroom does a garage door need?

About 12 inches for a standard torsion-spring installation, or 15 inches if you're adding an opener with a standard rail. With a low-headroom track kit you can install in as little as 4.5 inches, and a jackshaft (wall-mount) opener removes the ceiling rail entirely. We measure headroom on every replacement quote.

Are garage doors sold in custom sizes?

Yes. Most manufacturers build to the inch within a range, usually up to 20 ft wide and 14 ft tall for residential and much larger for commercial. Custom sizes typically add 10–25% to the door cost and 2–4 weeks to the lead time compared to a stock size.

What size garage door do I need for an RV?

Plan on 12 ft wide by 12 ft tall at minimum for a Class A motorhome, and 10x10 for a travel trailer or boat on a trailer. Measure your vehicle's highest point — including AC units and antennas — and add at least 6 inches of clearance.

How much does a bigger garage door cost?

In the Charlotte metro, a stock 9x7 insulated steel single door runs about $1,300–$2,100 installed, and a 16x7 insulated double runs about $2,000–$3,900 installed. Going to an 8 ft tall door usually adds $150–$400. Custom oversize and RV doors start around $3,500 installed.

Can I replace a garage door with a different size?

Yes, but changing the opening size means framing work — a new header, jambs, and often drywall and siding repair. Widening a 9 ft opening to 16 ft is a structural job that typically adds $1,500–$4,000 to the project. Changing only the height (7 ft to 8 ft) is usually simpler if there's enough headroom.

Buying Guide

Standard Garage Door Sizes: The Complete Chart (and How to Measure)

Name: Momentum Overhead Doors
Address: Charlotte metro service area, Charlotte, NC, 28217, US
Telephone: (704) 614-4455
Price range: $$
Rating: 4.8

Before you price a new door, you need two numbers: the width and height of your finished opening. Here's every standard size, what it fits, and the five measurements an installer will ask you for.

Short answer

The standard single garage door is 9 ft wide × 7 ft tall. The standard double is 16 ft wide × 7 ft tall. Height is moving to 8 ft in newer construction to fit trucks and SUVs. You also need roughly 12 in. of headroom, 3.75 in. of side room per side, and door height + 18 in. of backroom for a standard torsion installation.

Single (one-car) garage door sizes

Size	Where you see it	Notes
8 ft × 7 ft	Older homes, compact cars	Tight for a modern SUV
9 ft × 7 ft	The most common single door in the US	Fits nearly any car or small SUV
9 ft × 8 ft	Newer builds, lifted trucks	Extra foot of height for roof racks
10 ft × 7 ft	Wide single bays, workshops	Easier entry with mirrors and doors
10 ft × 10 ft	Shops, boats, small RVs	Needs 12+ in. of headroom

Double (two-car) garage door sizes

Size	Where you see it	Notes
15 ft × 7 ft	Older two-car garages	Slightly narrow for two full-size vehicles
16 ft × 7 ft	The standard double door	Comfortable for two mid-size vehicles
16 ft × 8 ft	Common in construction since ~2010	Best for trucks and roof-mounted gear
18 ft × 7 ft	Wide two-car bays	Roomy; often needs a heavier spring
18 ft × 8 ft	Large suburban builds	Usually requires a 3/4 HP+ opener

RV, boat, and oversize doors

Anything taller than 8 ft is considered oversize for residential. Common options are 10×10, 12×12, and 14×14. These doors weigh substantially more, so they need heavier torsion springs, a reinforced strut on each section, and usually a jackshaft or 3/4–1 HP opener. Measure your vehicle at its highest point — rooftop AC units and antennas are what catch people out — and add at least 6 inches of clearance.

Commercial overhead door sizes

Commercial sectional and rolling steel doors are built to the opening rather than to a stock chart. Typical service-bay openings run 10×10 to 14×14; loading docks are commonly 8×8 or 9×10 to match dock height. See our commercial overhead door services for spring cycle ratings and operator options.

The five measurements you need

Opening width. Measure the finished opening at its widest point, jamb to jamb — not the existing door.
Opening height. Floor to the underside of the header, measured at both sides and the middle. Use the smallest number.
Headroom. Top of the opening up to the ceiling or the lowest pipe, light, or joist. Standard torsion needs ~12 in.; ~15 in. with an opener rail. Under that, we use a low-headroom kit or a wall-mount jackshaft opener.
Side room. Each side of the opening out to the nearest wall or obstruction. You need about 3.75 in. per side for the vertical track.
Backroom. Depth from the opening into the garage. Plan on door height + 18 in., or door height + 4 ft 6 in. if you're adding an opener.

Charlotte-area installed pricing by size

Door	Non-insulated	Insulated
9×7 single steel	$1,000–$1,500	$1,300–$2,100
16×7 double steel	$1,500–$2,400	$2,000–$3,900
16×8 double steel	$1,700–$2,700	$2,300–$4,200
Oversize / RV (10×10 and up)	$2,800–$4,000	$3,500–$6,000+

Ranges include the door, tracks, springs sized to the door weight, hardware, installation, and haul-away of the old door. See full Charlotte garage door pricing for opener and accessory costs.

Keep reading

Frequently asked questions

Not sure what size you have?

Send us a photo of the opening and we'll confirm the size, headroom, and spring requirement — free, no obligation, anywhere in the Charlotte metro.

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