A standard single garage door is 8 feet wide and 7 feet tall, with 9 and 10 foot widths also common. A standard double is 16 by 7 feet, and 8 foot tall versions fit taller trucks.
You have driven through yours ten thousand times and never once thought about its size, which is exactly why it is worth thinking about once. The garage door is the biggest moving object in your house, and it was built to a standard that answers a surprisingly specific question: how much room does one car, plus its mirrors, plus your margin of error, actually need?
That standard is the 8 by 7 foot door, and it has dominated American garages for decades because it works for almost every passenger vehicle ever sold. But the moment you buy a wide truck, dream about an RV, or stare at a door that feels too tight, the numbers start to matter. This guide lays them out.
The Standard Garage Door Sizes
Manufacturers like Clopay and Amarr build residential doors to a short list of standard sizes, and the list has barely changed in fifty years. The most common single door is 8 feet wide by 7 feet tall, sold at every home center in the country. Step up options of 9 and 10 feet wide give wider trucks and SUVs breathing room, and 8 foot tall versions of each exist for taller vehicles.
Double doors follow the same logic at twice the width. The classic double is 16 feet wide by 7 feet tall, with 16 by 8 foot versions increasingly popular as vehicles got taller. Doors wider than that, up to 18 feet, are usually custom orders rather than stock items.
Here is the full standard chart, the sizes you can buy off the shelf:
| Door type | Width x height | Typical use |
|---|---|---|
| Single, standard | 8 x 7 ft | One car, the classic size |
| Single, wide | 9 x 7 ft | One car or truck, extra mirror room |
| Single, extra wide | 10 x 7 or 10 x 8 ft | Large trucks, easier daily parking |
| Double, standard | 16 x 7 ft | Two cars, the classic size |
| Double, tall | 16 x 8 ft | Two cars or SUVs, taller clearance |
| Three-car | 24 x 7 ft (or 16 + 8 combo) | Three cars, often one double plus one single |
| RV door | 10 to 12 x 10 to 14 ft | Motorhomes and tall campers |
| Cart and shed door | 6 x 6.5 to 7 ft | Golf carts, lawn equipment, sheds |
A useful detail hides in how these doors are built. A sectional door is made of horizontal panels, and wider doors simply use more of them: an 8 or 9 foot door uses two panels across, a 10 foot door uses three, a 16 foot door uses four, and an 18 foot door uses five. That is why prices jump at those exact widths.
British readers should note the local standard is different. In the UK, the most popular single door is 7 feet 6 inches wide by 7 feet tall, and the modern double standard is 16 by 7 feet, replacing the older 14 foot width. The rest of this guide uses American sizes, which is where most of the search interest lives.
10 Comparisons That Make a Garage Door Click
An 8 by 7 foot door is 56 square feet of moving wall. A 16 by 7 is 112. Here is what those numbers look like next to things you already know.
A King Bed Standing in the Opening
A king size bed measures 76 inches wide by 80 inches tall. An 8 by 7 foot garage door opening measures 96 inches by 84 inches. Stand a king mattress up in the doorway and it fills the width almost edge to edge, with about 10 inches of clearance on each side, and it stops just 4 inches short of the top.
A king bed is one of the biggest things most people have ever wrestled through a doorway. The garage door is only a little bigger than that wrestling match, in both directions. Our guide to how big a king size bed is breaks down those 76 by 80 inch dimensions in full.
Two Refrigerators Side by Side
A standard full size refrigerator is about 36 inches wide and 70 inches tall. Two of them side by side measure 72 inches wide, which leaves a full 24 inches of an 8 foot door unused, a foot of air on each side. Height-wise they stop 14 inches below the 7 foot header.
This comparison earns its place because garages are where second fridges live. The door is your reference: the opening alone is wider than two full size refrigerators with room to walk between them. Our guide to how tall a refrigerator is has the full breakdown of standard fridge dimensions.
A Full Size Pickup Threading an 8-Footer
A Ford F-150, the best selling vehicle in America, is about 6.7 feet wide at the body and about 6.4 feet tall in stock form. Fold the mirrors in and it slips through an 8 foot door with roughly 16 inches of total clearance, 8 inches per side. Leave the mirrors out and that margin shrinks toward zero, which is exactly why 9 foot doors exist.
This is the comparison that sells 9 foot doors. Modern trucks and SUVs grew wider over the last two decades while the 8 foot standard stayed put. If your mirrors fold, the 8 footer works. If they do not, or if you park tired at midnight, the 9 foot door is the difference between a habit and a gamble.
A Basketball Hoop’s 10 Foot Rim
A regulation basketball rim sits 10 feet off the ground. A 7 foot garage door top sits a full 3 feet below the rim. Even the 8 foot tall door leaves 2 feet of daylight between its header and the hoop.
Driveway basketball is the reason half of America knows the 10 foot number by heart, which makes it the perfect height reference. Look at the hoop, drop your eyes 2 to 3 feet, and that is where your garage door ends.
One Parking Space, Standing Up
A standard parking space is 9 feet wide and 18 feet deep. A 9 foot garage door is the same width as the space, and the 7 foot height is about what you get if you stand the space’s depth on end and cut it down.
The parking space comparison matters because it is the one drivers already use unconsciously. You have parked in 9 foot wide slots a thousand times, so you know exactly how much room 9 feet of width gives a car. The garage door is that same 9 feet, except the walls are real and the ceiling is 7 feet up. Our guide to how big a parking space is covers the full 9 by 18 foot standard.
Four Adults Shoulder to Shoulder
An average adult is about 18 to 20 inches wide at the shoulders. Four adults standing shoulder to shoulder span roughly 72 to 80 inches. An 8 foot door is 96 inches wide, so four adults fit across it with room to spare, and a fifth could squeeze in.
Four adults across is wider than any car you will ever own. The door was sized for vehicles but is generous for people, which is why moving day crews love them.
Six Interior Doors Laid Sideways
A standard interior door is 30 inches wide. Six of them laid side by side measure 180 inches, or 15 feet. A 16 foot double garage door is 192 inches, just one foot wider than six interior doors in a row.
Interior doors are the reference everyone has walked through today, which makes this the sneakiest good comparison in the guide. Picture the widest hallway of interior doors you have ever seen, then add one more foot. That is the double garage door, the biggest opening in the average house, and it opens with a button.
A Golf Cart With Room to Spare
A standard golf cart is about 4 feet wide and 6 feet tall. Park one in an 8 foot wide, 7 foot tall single bay and it uses half the width and most of the height, leaving 4 feet of empty doorway beside it.
Golf carts get their own door size, usually 6 by 6.5 feet, precisely because a full single door is overkill. The comparison shows the scale beautifully: the standard door is two golf carts wide.
A Semi Trailer That Will Not Fit
A semi trailer is 8.5 feet wide and 13.5 feet tall at the federal limit. It would fit the width of a 16 foot double door with room to spare, but the 7 or 8 foot height stops it cold. Even an RV-specific 12 foot tall door would be a squeeze.
This is the comparison that shows what the residential standard is really for: cars and light trucks, nothing commercial. The moment your vehicle needs more than 8 feet of height, you have left the residential catalog for commercial doors.
Two Singles vs One Double
Two 8 foot single doors and one 16 foot double door cover the same 16 feet of wall, but they behave differently. Two singles give each car its own opening, let one door break without trapping both cars, and keep winter air out of the half you are not using. One double gives a wider target for tired parking and costs less than two separate doors and openers.
This is the comparison homeowners actually choose between, and there is no universal winner. Two singles suit households with different schedules and cold climates. One double suits wide vehicles and simpler budgets. Measure your wall, count your cars, and pick the trade you prefer.
Will It Fit? The Vehicle Guide
Door width and height both matter, and height is the one people forget. Here is the practical fit chart, assuming stock vehicles with mirrors folded unless noted:
| Vehicle | Approx size | Fits an 8 x 7 door? | Better choice |
|---|---|---|---|
| Compact sedan | 6 ft wide, 4.8 ft tall | Yes, easily | 8 x 7 is plenty |
| Midsize SUV | 6.2 ft wide, 5.8 ft tall | Yes, comfortable | 8 x 7 or 9 x 7 |
| Full size pickup | 6.7 ft wide, 6.4 ft tall | Yes, mirrors folded | 9 x 7 for daily ease |
| Large SUV with roof box | 6.5 ft wide, 7.5 ft tall | Width yes, height no | 9 x 8 |
| Lifted truck | 7 ft wide, 8+ ft tall | Tight or no | 10 x 8 |
| Class A motorhome | 8.5 ft wide, 12 to 13 ft tall | No | 12 x 14 RV door |
| Box truck | 8 ft wide, 10 ft tall | No | Commercial door |
The pattern is simple. Width is almost never the problem below a full size truck, and height is almost never the problem below a lifted truck. Buy the door for the tallest vehicle you will own in the next ten years, not the one in the driveway today.
Door vs Garage: The Whole Footprint
The door is the opening, not the room. Here is how the standard doors pair with typical garage interiors:
| Garage | Typical footprint | Floor area | Standard door |
|---|---|---|---|
| 1-car | 12 to 14 x 20 to 24 ft | 240 to 336 sq ft | Single 8 or 9 x 7 |
| 2-car | 18 to 22 x 20 to 24 ft | 360 to 528 sq ft | Double 16 x 7, or two singles |
| 3-car | 28 to 34 x 20 to 24 ft | 560 to 816 sq ft | 16 x 7 plus 8 x 7, or 24 ft combo |
| RV bay | 14 to 16 x 40 to 50 ft | 560 to 800 sq ft | 12 x 12 to 14 |
A 2-car garage is roughly 400 square feet of floor with a 112 square foot door in the wall, which is why garage doors dominate the front of a house the way they do.
Measure Your Own Door in Five Steps
Measure the opening, not the old door. The five measurements every installer asks for:
- Width: measure the rough opening between the door jambs, at the widest point, in three spots, and use the smallest.
- Height: measure from the finished floor to the underside of the header, again in three spots, smallest wins.
- Sideroom: measure from each jamb to the nearest wall or obstruction. You need about 4 to 5 inches per side for standard track.
- Headroom: measure from the top of the opening to the ceiling or lowest obstruction. Standard track needs 12 to 15 inches; low headroom kits exist if you are short.
- Backroom: measure from the opening into the garage to the back wall or first obstruction. Plan on the door height plus 18 inches minimum, and about 10 feet total if you are adding an automatic opener.
Write all five numbers down before you shop. A door ordered to the wrong width is an expensive wall decoration, and headroom is the measurement that surprises the most people.
Feet to Meters for Common Doors
One foot is 30.48 centimeters. Every standard door converts straight across:
| Door | Feet | Meters |
|---|---|---|
| Single standard | 8 x 7 ft | 2.44 x 2.13 m |
| Single wide | 9 x 7 ft | 2.74 x 2.13 m |
| Single tall | 8 x 8 ft | 2.44 x 2.44 m |
| Double standard | 16 x 7 ft | 4.88 x 2.13 m |
| Double tall | 16 x 8 ft | 4.88 x 2.44 m |
| Extra wide double | 18 x 7 ft | 5.49 x 2.13 m |
FAQs
What is the most common garage door size?
The most common single door is 8 feet wide by 7 feet tall, and the most common double is 16 feet wide by 7 feet tall. These two sizes cover the majority of American homes, and they are the sizes stocked at every home center.
Will a full size truck fit through an 8 foot garage door?
Yes, with the mirrors folded. A stock full size pickup is about 6.7 feet wide at the body, leaving roughly 8 inches of clearance per side in an 8 foot opening. For daily driving, most truck owners prefer a 9 foot door, which turns a careful squeeze into a non-event.
Should I get an 8 or 9 foot wide garage door?
Get the 9 footer if you drive a truck or large SUV, park in the dark, or share the garage with bikes and storage along the walls. The extra foot costs little at build time and pays off every single day. Stick with 8 feet for sedans and small SUVs in a straightforward garage.
One double door or two single doors?
One 16 foot double costs less than two 8 foot singles and gives a wider target for parking. Two singles give redundancy, since one broken door never traps both cars, and let less cold air in during winter. Households with staggered schedules usually prefer two singles.
How tall a door do I need for an RV?
Plan on 12 to 14 feet of door height for a Class A motorhome, which runs 12 to 13 feet tall at the roof. Add a foot of margin for antennas and roof air conditioners. RV doors are typically 10 to 12 feet wide, and the garage needs matching wall height, so this is a build-time decision.
How much headroom does a garage door need?
A standard sectional door needs 12 to 15 inches of headroom between the top of the opening and the ceiling. Low headroom track kits can work with as little as about 5 inches, and they are common in older garages and basement conversions.
How much does a standard garage door cost?
As a rough installed range, a single 8 by 7 foot door commonly runs 1,700 to 3,200 dollars, and a double 16 by 7 foot door runs 3,200 to 4,400 dollars, with insulation, windows, and openers moving the number up. Treat these as starting ranges and get local quotes.
What size garage door for a golf cart?
A 6 foot wide by 6 and a half foot tall door is the common cart and shed size, and it swallows a 4 foot wide golf cart with room to walk beside it. A standard 8 by 7 single door also works and leaves space for lawn equipment alongside.
Are UK garage door sizes different?
Yes. The most popular UK single sectional door is 7 feet 6 inches wide by 7 feet tall, narrower than the American 8 footer, and the modern UK double standard is 16 by 7 feet. Older British garages were often built for much smaller cars, so measure before assuming an American chart applies.
How thick is a standard garage door?
Residential sectional doors are typically 1 and 3/8 to 2 inches thick, with insulated models at the thicker end. The thickness matters less for sizing than for insulation and stiffness, but it does affect the headroom the track hardware needs.
Conclusion
A garage door is 8 feet wide and 7 feet tall until your vehicle says otherwise. The single standard fits nearly every car ever sold. The 9 foot width exists for trucks and mirrors. The double 16 by 7 fits two cars the way the single fits one. And the moment you need more than 8 feet of height, you have left the residential catalog and started shopping commercial.
Keep the three pictures that matter. The king bed standing in the opening, nearly filling it. The parking space, the same 9 feet wide. The basketball rim, 3 feet above the header. The next time you duck under that door, you will know exactly how much house you just walked through.
Related Reading
– How Big Is a Parking Space? 10 Things That Size, Visualized: the 9 by 18 foot slot that matches your door’s width. – How Tall Is a Refrigerator? 10 Comparisons: two of these stand side by side in your door with a foot to spare. – How Big Is a King Size Bed? 10 Everyday Comparisons: the 76 by 80 inch bed that nearly fills an 8 by 7 opening.
Sources
- Derchi Door
- Spectrum Overhead Door
- Garaga
- Clopay
- Amarr
- Team Taylor Doors
- Raynor
- Garage Door Guide
James Carter is the founder and editor of DimensionWay, where he researches, measures, and verifies real-world dimensions, from everyday objects to world-famous landmarks. Every number published on DimensionWay is cross-checked against manufacturer specifications and official sources, so readers always get accurate, easy-to-visualize comparisons.
