If you’re planning to build a garage, buy a home, or simply want to know how much space a two-car garage provides, you may be wondering: how many square feet is a double car garage?
A typical double car garage, also called a two-car garage, commonly ranges from about 400 to 700 square feet, depending on its dimensions and how much room is provided for vehicles, storage, tools, and movement.
A very common starting size is 20 feet wide by 20 feet deep:
20 × 20 = 400 square feet
A larger 24 × 24-foot garage provides:
24 × 24 = 576 square feet
For homeowners who want comfortable parking plus storage or workspace, dimensions such as 24 × 24 feet can provide substantially more usable space.
There is no single standard size for every double car garage. The ideal dimensions depend on vehicle size, door configuration, storage needs, local building requirements, and whether you want additional workspace.
Quick Answer: How Many Square Feet Is a Double Car Garage?
A typical double car garage can range from approximately:
400–700 square feet
Some common dimensions include:
| Garage Dimensions | Square Feet |
|---|---|
| 20 × 20 ft | 400 sq. ft. |
| 20 × 22 ft | 440 sq. ft. |
| 20 × 24 ft | 480 sq. ft. |
| 22 × 22 ft | 484 sq. ft. |
| 22 × 24 ft | 528 sq. ft. |
| 24 × 24 ft | 576 sq. ft. |
| 24 × 26 ft | 624 sq. ft. |
| 24 × 28 ft | 672 sq. ft. |
| 24 × 30 ft | 720 sq. ft. |
The most important thing to remember is that garage square footage is calculated by multiplying the interior or exterior width by the depth, depending on which measurement you’re using.
What Is a Double Car Garage?
A double car garage is a garage designed to accommodate two vehicles.
It may have:
- One large garage door
- Two separate garage doors
- Space for two cars side by side
- Additional storage
- Shelving
- Work areas
- Bicycle storage
- Lawn equipment
The term “double car garage” doesn’t specify one exact dimension.
A compact two-car garage may be around 400 square feet, while a larger garage designed for trucks, SUVs, storage, and workshop activities can exceed 600 or even 700 square feet.
How Do You Calculate Garage Square Footage?
The basic formula is:
Square Feet = Length × Width
For example, if your double garage measures 20 feet wide and 20 feet deep:
20 × 20 = 400 square feet
Therefore, a:
20 × 20 garage = 400 square feet
If the garage is 24 feet wide and 24 feet deep:
24 × 24 = 576 square feet
Therefore:
24 × 24 garage = 576 square feet
How Many Square Feet Is a 20×20 Double Garage?
A 20 × 20-foot garage provides:
20 × 20 = 400 square feet
So:
A 20×20 double garage is 400 square feet.
This is a common compact size for a two-car garage.
It can accommodate two vehicles, but the amount of remaining space depends on the vehicles’ dimensions and the garage layout.
If you plan to park two large SUVs or trucks, 400 square feet may feel tight, particularly when opening doors or adding storage.
How Many Square Feet Is a 20×24 Double Garage?
A 20 × 24-foot garage provides:
20 × 24 = 480 square feet
Therefore:
20×24 garage = 480 square feet
The additional four feet of depth compared with a 20 × 20 garage provides more room for storage, work areas, or longer vehicles.
How Many Square Feet Is a 22×22 Garage?
Calculate:
22 × 22 = 484 square feet
Therefore:
A 22×22 garage is 484 square feet.
This provides slightly more floor area than a 20 × 24 garage.
How Many Square Feet Is a 24×24 Double Garage?
A 24 × 24-foot garage has:
24 × 24 = 576 square feet
Therefore:
A 24×24 double garage is 576 square feet.
This is a popular larger size because it provides more room around parked vehicles.
The extra space can be useful for:
- Shelving
- Workbenches
- Bikes
- Freezers
- Tools
- Lawn equipment
- Storage cabinets
How Many Square Feet Is a 24×26 Garage?
Calculate:
24 × 26 = 624 square feet
Therefore:
A 24×26 garage is 624 square feet.
This size offers considerably more flexibility than a compact 20 × 20 garage.
How Many Square Feet Is a 24×28 Garage?
Calculate:
24 × 28 = 672 square feet
Therefore:
A 24×28 garage is 672 square feet.
This provides enough floor area for two vehicles plus substantial storage or workspace, depending on the layout.
How Many Square Feet Is a 24×30 Garage?
Calculate:
24 × 30 = 720 square feet
Therefore:
A 24×30 garage is 720 square feet.
A garage of this size can provide significant additional space for storage, workshop activities, recreational equipment, or larger vehicles.
Typical Double Car Garage Sizes
There are several common dimensions for two-car garages.
| Width | Depth | Area |
| 20 ft | 20 ft | 400 sq. ft. |
| 20 ft | 22 ft | 440 sq. ft. |
| 20 ft | 24 ft | 480 sq. ft. |
| 22 ft | 22 ft | 484 sq. ft. |
| 22 ft | 24 ft | 528 sq. ft. |
| 24 ft | 24 ft | 576 sq. ft. |
| 24 ft | 26 ft | 624 sq. ft. |
| 24 ft | 28 ft | 672 sq. ft. |
| 24 ft | 30 ft | 720 sq. ft. |
These are examples rather than universal standards.
Is 400 Square Feet Enough for a Two-Car Garage?
A 400-square-foot garage can accommodate two vehicles if the dimensions and vehicle sizes work well together.
For example:
20 × 20 = 400 square feet
However, parking two vehicles isn’t the only consideration.
You’ll also need space for:
- Opening car doors
- Walking around vehicles
- Accessing storage
- Opening trunks and tailgates
- Moving equipment
- Entering and exiting the garage
A 20 × 20 garage can therefore feel comfortable for some vehicles and crowded for others.
If you regularly park large SUVs or trucks, a wider or deeper garage may be more practical.
Is 500 Square Feet Enough for a Double Garage?
Yes. Around 500 square feet can provide a useful amount of space for two vehicles.
For example:
20 × 25 = 500 square feet
or:
22 × 23 ≈ 506 square feet
A garage around this size can offer more flexibility than a compact 400-square-foot layout.
Is 600 Square Feet Good for a Two-Car Garage?
A 600-square-foot garage generally provides significantly more flexibility.
For example:
24 × 25 = 600 square feet
This can allow room for:
- Two vehicles
- Storage shelves
- Workbench
- Bicycles
- Lawn equipment
- Tools
The exact usable space still depends on the garage’s shape and placement of doors and storage.
How Wide Should a Double Car Garage Be?
A two-car garage often needs at least around 20 feet of width to accommodate two vehicles, but a wider garage can be more comfortable.
A width of approximately 22–24 feet can provide additional room for:
- Opening vehicle doors
- Walking between vehicles
- Storage
- Workbenches
- Shelving
The appropriate width depends on vehicle size and how much clearance you want.
How Deep Should a Double Car Garage Be?
Garage depth often falls around 20–30 feet, depending on the desired use.
A 20-foot depth may work for basic vehicle parking.
A 24-foot depth provides more flexibility.
A 26–30-foot depth can be particularly useful if you want:
- Storage behind vehicles
- A workshop
- Large SUVs or trucks
- Freezers
- Equipment
- Recreational gear
How Much Space Does Each Car Need?
The exact amount depends on vehicle size.
A compact car requires less space than a full-size pickup truck or large SUV.
A two-car garage needs sufficient width for both vehicles plus clearance between the vehicles and the walls.
For planning purposes, simply dividing the garage’s width by two isn’t enough.
You should consider:
- Vehicle width
- Side mirrors
- Door swing
- Walking clearance
- Storage
- Garage door tracks
Garage Square Footage vs. Usable Space
A garage’s total square footage doesn’t necessarily equal the amount of space you can comfortably use.
For example, a 576-square-foot garage may have:
- Two vehicles occupying most of the floor
- Shelving along the walls
- A workbench
- Storage cabinets
The actual open floor area will therefore be less than 576 square feet.
This is why garage dimensions are often more useful than square footage alone.
Double Garage With One Garage Door
Some two-car garages use a single wide garage door.
This configuration can make it easier to:
- Park vehicles
- Move equipment
- Access the entire garage
However, a large opening may require careful structural planning.
Double Garage With Two Garage Doors
Other double garages use two individual doors.
Advantages can include:
- Independent vehicle access
- A more traditional appearance
- Potentially easier door replacement
- Separate entry for each vehicle
The best configuration depends on the home’s architecture, available space, budget, and personal preference.
Can a Double Garage Be Used as a Workshop?
Yes. A larger two-car garage can be used for both parking and workshop activities.
A 24 × 24-foot garage, for example, has:
576 square feet
That provides more room for:
- Workbench
- Tools
- Cabinets
- Shelving
- Power equipment
- Bicycles
If you want a substantial workshop while keeping two vehicles inside, a larger garage may be preferable.
Can You Fit Storage in a Double Car Garage?
Yes. Storage is one of the most common uses for additional garage space.
Possible storage solutions include:
- Wall-mounted shelving
- Overhead racks
- Tall cabinets
- Pegboards
- Ceiling storage
- Built-in closets
Using vertical wall and ceiling space can preserve valuable floor area for vehicles.
What Is the Best Size for a Double Garage?
There isn’t one perfect size for every homeowner.
A rough guide is:
20 × 20 feet — 400 sq. ft.
Good for basic two-car parking where space is limited.
20 × 24 feet — 480 sq. ft.
Provides additional depth for storage and larger vehicles.
24 × 24 feet — 576 sq. ft.
A comfortable option for many homeowners who want parking plus storage.
24 × 26 feet — 624 sq. ft.
Offers additional flexibility for storage or workspace.
24 × 30 feet — 720 sq. ft.
Better suited to homeowners who want substantial storage or workshop space.
What Is the Average Double Garage Size?
There is no single official average that applies to every home, but many two-car garages fall within approximately 400–700 square feet.
A useful middle-range example is:
24 × 24 feet = 576 square feet
This provides substantially more room than a compact 20 × 20-foot garage.
Actual garage sizes vary according to home design, lot size, local regulations, vehicle sizes, and homeowner needs.
Double Garage vs. Single Garage
A single-car garage typically requires considerably less floor area than a two-car garage.
For example:
12 × 20 = 240 square feet
A two-car garage measuring 20 × 20 feet provides:
20 × 20 = 400 square feet
However, a double garage isn’t simply two single garages placed together. Shared walls, structural elements, door placement, and vehicle clearance can affect the final design.
How to Measure a Double Garage
To calculate the garage’s floor area:
Step 1: Measure the width
Measure from one interior side wall to the other.
Step 2: Measure the depth
Measure from the front wall to the back wall.
Step 3: Multiply
Use:
Width × Depth = Square Feet
For example:
24 × 24 = 576 square feet
If the garage has an irregular shape, divide it into rectangles, calculate each area separately, and add the results.
Common Mistakes When Calculating Garage Square Footage
1. Measuring the Exterior Instead of the Interior
Exterior dimensions include wall thickness, so the resulting area may differ from the usable interior floor area.
2. Forgetting Irregular Shapes
Not every garage is a perfect rectangle.
3. Ignoring Storage
Two garages with the same square footage can feel completely different depending on storage placement.
4. Focusing Only on Square Footage
Width and depth matter just as much as total area.
5. Forgetting Vehicle Clearance
Large vehicles require more room for doors, mirrors, and movement.
FAQs
How many square feet is a double car garage?
A typical double car garage is approximately 400–700 square feet, although sizes vary. Common examples include 20 × 20 feet at 400 square feet and 24 × 24 feet at 576 square feet.
Is a 20×20 garage big enough for two cars?
A 20 × 20 garage provides 400 square feet and can accommodate two vehicles, but it may feel tight with large SUVs or trucks and leaves less room for storage.
How many square feet is a 24×24 garage?
A 24 × 24 garage has:
24 × 24 = 576 square feet.
Is 500 square feet enough for a two-car garage?
Yes. A 500-square-foot garage can provide useful space for two vehicles, although the exact comfort level depends on vehicle sizes and garage dimensions.
What is a good size for a two-car garage?
A 24 × 24-foot garage, providing 576 square feet, is a practical larger size for two vehicles plus some storage. Smaller 20 × 20-foot garages can also work when space is limited.
How wide is a typical double garage?
Many two-car garages are around 20–24 feet wide, although actual dimensions vary based on vehicle size and desired clearance.
How deep should a two-car garage be?
A depth of approximately 20–30 feet can work depending on whether the garage is intended only for parking or also for storage and workspace.
How much square footage does a garage need per car?
There is no single universal number because vehicle sizes and required clearance vary. A garage should be designed around the actual vehicles, door clearance, walking space, and storage requirements.
Conclusion
So, how many square feet is a double car garage?
A typical two-car or double car garage can range from approximately:
400–700 square feet
Some common sizes include:
- 20 × 20 feet = 400 sq. ft.
- 20 × 24 feet = 480 sq. ft.
- 22 × 24 feet = 528 sq. ft.
- 24 × 24 feet = 576 sq. ft.
- 24 × 26 feet = 624 sq. ft.
- 24 × 30 feet = 720 sq. ft.
A 20 × 20-foot garage is a compact option for two vehicles, while a 24 × 24-foot garage provides 576 square feet and offers considerably more flexibility for parking, storage, and workspace.
When planning a garage, don’t focus on square footage alone. Width, depth, vehicle size, door placement, walking clearance, storage, and intended use all affect how comfortable the garage will be.
For a quick calculation, remember:
Garage Square Feet = Width × Depth
So, if your double garage measures 24 feet by 24 feet:
24 × 24 = 576 square feet.
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