What Size Is A Standard 2 Car Garage Door? | Fits Most Homes

If you’re pricing a replacement or framing a new opening, you want one number you can trust. For most homes, that number is 16×7. The trick is that a garage door system needs more than a panel size. Tracks, springs, and an opener all need space around the opening. Miss one clearance, and a “standard” order can still turn into a return, a delay, or extra carpentry.

This guide gives you the common two-car door sizes, what those sizes feel like in day-to-day parking, and a measurement routine that matches how manufacturers and installers talk about openings.

What “Standard” Means For Two-Car Garage Doors

Garage doors are sold by nominal size, written as width × height. A “16×7” door is built to fit a 16-foot-wide, 7-foot-tall framed opening in a typical sectional door setup. Clopay notes that the rough opening should equal the same size as the door, then calls out the other clearances you must measure—side room, headroom, and backroom. Clopay’s size and measuring guidance is a clear reference for those terms and baseline clearances.

“Standard” also means easy availability. Common sizes come with more style choices, more window layouts, and shorter lead times. Less common sizes can still be ordered, yet you may see fewer design options and longer waits.

Typical Standard 2 Car Garage Door Size In Feet And Inches

The most common size for a two-car residential garage door is 16 feet wide by 7 feet tall. It’s the baseline that shows up in many catalogs and replacement quotes.

Two common alternatives show up when people want more room:

• 18 feet wide by 7 feet tall for wider vehicles, tighter driveway angles, or less mirror stress.
• 16 feet wide by 8 feet tall for taller trucks, roof racks, and overhead cargo boxes.

You’ll also see double doors at 12′, 14′, 15′, or 20′ widths, plus 9′ or 10′ heights for specialty bays. Those sizes exist, but 16×7 is the “most standard” answer.

What Size Is A Standard 2 Car Garage Door? In Real Homes

“Fits two cars” can mean “fits two cars with calm” or “fits two cars if each driver parks like they’re threading a needle.” What changes the feel is not just door width, but how you enter the garage and how wide your vehicles are at the mirrors.

Use this quick check:

• If both vehicles are sedans or compact SUVs and you approach straight, 16×7 is often comfortable.
• If one vehicle is a full-size truck or a wide SUV, 18′ wide can make daily parking easier.
• If your vehicle clears the opening but roof gear does not, 8′ tall can solve that problem.

Also think about what else goes through the door. Bikes, trash bins, lawn gear, and a rolling workbench can eat up the “extra” inches you assumed were spare.

Door Size Vs. Opening Size: The Detail That Stops Bad Orders

When you order a garage door, the size usually refers to the framed opening it’s meant to fit. That’s not the same as trim-to-trim, and it’s not always the same as measuring the old panels. Measure the opening inside the jambs, not the exterior casing.

Then measure the spaces a door system needs around that opening:

• Side room for vertical tracks and brackets.
• Headroom for springs and horizontal tracks.
• Backroom so the door can travel fully open.

Clopay’s measuring notes give baseline minimums such as 10 inches of headroom for extension springs and 12 inches for torsion springs, plus a backroom rule of door height plus 18 inches. Those clearance figures help you spot issues early, like a low beam or a storage shelf that blocks track space.

On the safety side, garage door hardware stores serious force. DASMA’s inspection guidance warns against touching parts under spring tension and stresses checking against code and manufacturer instructions. DASMA’s TDS #151 checklist is worth a read so you know what a clean install gets checked for.

How To Measure A Two-Car Garage Door Opening

Use a tape measure and write down each number. Measure with the door closed so the opening edges are easy to see.

Measure The Rough Opening Width

Measure inside jamb to inside jamb at the top, middle, and bottom. Garages settle. Use the smallest reading when matching a standard size.

Measure The Rough Opening Height

Measure from the finished floor to the underside of the header. Take readings near both jambs, since the slab can slope.

Measure Side Room, Headroom, And Backroom

Side room is jamb-to-obstruction on each side. Headroom is top of opening to ceiling or the lowest obstruction. Backroom is opening to the rear wall and ceiling obstructions along the door’s travel path. If any of these are tight, track style and spring type may need to change.

Common Two-Car Garage Door Sizes And When Each One Makes Sense

If you’re choosing between stock sizes, this table shows where each size tends to fit best.

Nominal Size (W×H)	Best Match	Notes
12′ × 7′	Small two-car bays	Can feel narrow for two vehicles; common in older, tighter garages.
14′ × 7′	Compact double garages	Works for smaller cars; check style availability before ordering.
15′ × 7′	Two small cars plus storage	Less common; lead times can vary by brand and material.
16′ × 7′	Most standard 2-car garages	Broad selection and common hardware packages.
16′ × 8′	Taller vehicles and roof gear	Often needs more headroom; opener position may change.
18′ × 7′	Wide vehicles or tight approach	More side clearance for mirrors and door edges.
18′ × 8′	Oversized SUVs and tall storage	Common on new builds with higher ceilings.
20′ × 8′	Large bays and workshops	Often paired with heavier-duty hardware and larger springs.

Width And Height Choices That Feel Better Day To Day

If you’re choosing between 16′ and 18′ widths, step outside and trace your turn into the driveway. A straight approach makes 16′ feel wider. A sharp turn makes it feel tighter. Two extra feet can cut down on mirror grazes and the “back up and try again” routine.

For height, seven feet clears most passenger vehicles. Eight feet adds room for tall trucks and roof carriers. If you store a ladder on top of the vehicle, that extra foot often matters more than you’d expect.

One Wide Door Vs. Two Single Doors

Some two-car garages use two single doors instead of one wide door, such as two 9×7 doors. Two doors let you open only one side, which can reduce heat loss in cold climates and keeps clutter on one side from blocking the other. The tradeoff is two openers, two sets of springs, and more moving parts to maintain.

Space For Tracks, Springs, And The Opener

A “standard” size door can still be the wrong pick if your ceiling is low, the garage is short, or shelves crowd the sides.

Headroom Basics

Torsion-spring systems often need more room above the opening than extension-spring setups. Low-headroom track kits exist for tight ceilings, but they can add cost and can limit some designs.

Backroom Basics

The door needs enough depth to travel fully open and lay near the ceiling. If you’re close to the minimum, confirm that your opener rail and any ceiling lights will clear the moving door.

Measurement Checklist Before You Order

Run this list before you click “buy” or sign a quote. It catches the hidden constraints that change hardware and labor.

Measurement	How To Take It	What It Affects
Opening width	Inside jamb to inside jamb; check top, mid, bottom	Door order size and track alignment
Opening height	Finished floor to underside of header; check both sides	Door height and bottom seal fit
Side room	Jamb to nearest obstruction on each side	Track brackets and spring hardware clearance
Headroom	Top of opening to ceiling or lowest obstruction	Spring type, track type, opener placement
Backroom	Opening to rear wall and ceiling obstructions	Full door travel and opener rail length
Out-of-square check	Measure diagonals corner to corner inside the opening	Shimming needs and smooth door movement

Choosing The Best Standard Size For Your Garage

If your opening is already framed for a standard size, matching that size keeps the job simple and keeps costs in check. If you’re building new, decide the opening size around your vehicles, then pick the door style that matches.

If You Want The Default Pick

For most two-car garages, a 16′ × 7′ door is the default. It’s common, widely stocked, and easy to service.

If Parking Feels Tight

If mirrors feel close or you park at an angle, a wider door can make daily use calmer. If widening the opening is not in the plan, two single doors can also help since you’re guiding each car into its own bay.

If Clearance Above Is The Issue

If the vehicle clears but roof gear scrapes, an 8′ tall door can fix it. Check headroom and track space first, since taller doors often need taller track and spring setups.

Install Reality Checks And Safety Notes

Measuring is a solid DIY step. Spring work is not. The parts under tension can injure you fast. DASMA’s checklist is blunt about avoiding contact with tensioned components and points code officials back to manufacturer documents during inspections. Use that checklist as a reference for what “installed right” means when you compare quotes.

One-Page Takeaway

The standard answer is 16′ × 7′ for a two-car garage door. The common upgrades are 18′ wide for easier parking and 8′ tall for taller vehicles and roof gear. Measure the opening, then verify side room, headroom, and backroom before you order.