Quick answer
What is the standard garage door size?
A standard single-car garage door is 8 or 9 ft wide by 7 ft tall; a standard double-car door is 16 ft wide by 7 ft tall. An 8 ft tall option is widely available for taller vehicles, roof boxes, and lifted trucks.
Size reference
Standard garage door dimensions
| Garage Door | Width | Height | Metric (W × H) |
|---|---|---|---|
| Single-car (compact) | 8 ft (8'0") | 7 ft (7'0") | 2.44 × 2.13 m |
| Single-car (standard) | 9 ft (9'0") | 7 ft (7'0") | 2.74 × 2.13 m |
| Single-car (wide) | 10 ft (10'0") | 7 ft (7'0") | 3.05 × 2.13 m |
| Single-car (tall) | 9 ft (9'0") | 8 ft (8'0") | 2.74 × 2.44 m |
| Double-car (standard) | 16 ft (16'0") | 7 ft (7'0") | 4.88 × 2.13 m |
| Double-car (wide / RV) | 18 ft (18'0") | 8 ft (8'0") | 5.49 × 2.44 m |
Width is the rough opening; order the door ~3 in smaller. Heights are nominal — confirm before buying.
Quick lookups
Quick fit-check examples.
What size garage door do I need?
For one car, a 9 ft wide by 7 ft tall door is the most common choice; 8 ft suits a compact garage and 10 ft gives extra room for trucks or a side mirror buffer. For two cars sharing one opening, 16 ft wide by 7 ft tall is standard. Height, not width, is the usual constraint for SUVs and lifted trucks.
Garage door clearance you actually need
The opening dimensions alone do not tell you if the door fits the garage. You need at least 14–18 in of headroom above the opening for the track and opener, and backroom depth equal to the door height plus about 18 in — so a 7 ft door needs roughly 8 ft 6 in of clear depth behind the opening.
Measure smart
What to measure.
Four numbers decide nearly every fit check. Get these right and the rest follows.
- 01Width, depth, and height of the item, taken at the widest points, including any feet, handles, or protrusions.
- 02The clear opening of every space the item passes through, measured at the tightest point rather than the nominal size.
- 03The item's smallest dimension, which decides whether tilting or turning it on edge gets it through.
- 04Diagonal clearance at turns, landings, and openings, where the real bottleneck usually is.
Don't make these
Common mistakes.
Most “it didn't fit” stories trace back to one of these oversights.
- ⚠Trusting the printed or nominal size instead of measuring the item and the space yourself.
- ⚠Measuring the frame or outer edge instead of the actual clear opening.
- ⚠Forgetting that a long item can sometimes clear a tight space only when tilted or turned.
- ⚠Planning one space and overlooking the next one in the path.
Run a check
Related fit calculators.
Go deeper
Guides and reference tables.
Frequently asked
Questions we keep getting.
What is the standard single-car garage door size?
A standard single-car garage door is 8 or 9 ft wide by 7 ft tall. The 9 ft width is the most common, while 8 ft suits compact garages and 10 ft is offered for extra clearance.
01What is the standard double-car garage door size?
A standard double (two-car) garage door is 16 ft wide by 7 ft tall. Larger 18 ft wide and 8 ft tall doors are available for big vehicles, RVs, or boats.
02How tall is a standard garage door?
The standard height is 7 ft (2.13 m). An 8 ft (2.44 m) tall option is increasingly common and is the size to choose for tall SUVs, roof cargo boxes, or lifted trucks that would not clear 7 ft.
03How much clearance does a garage door opener need?
Plan for 14–18 in of headroom above the door opening for the track and opener, and backroom depth of the door height plus about 18 in. The opening size alone does not guarantee the mechanism fits the garage.
04
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