What Are Standard Garage Door Dimensions? 

Choosing the right garage door size affects everything from curb appeal to daily convenience. Most homeowners don’t realize that picking the wrong dimensions can lead to costly modifications and installation headaches.

This guide breaks down standard garage door dimensions for single-car, double-car, and specialty garages. You’ll learn exact measurements, how sizes vary by garage type, and which dimensions work best for your vehicles.

Standard Garage Door Dimensions

The most popular residential garage door sizes are 8 feet wide by 7 feet tall for single doors and 16 feet wide by 7 feet tall for double doors. These dimensions accommodate approximately 80% of American garages, according to industry data.

Standardization matters for three key reasons. First, standard-sized doors cost 30-50% less than custom options. Second, they’re readily available with shorter lead times. Third, most garage door openers and hardware are designed specifically for these measurements.

Single-Car Garage Door Dimensions 

The standard single-car garage door measures 8 feet wide by 7 feet tall. This size accommodates compact cars, sedans, and smaller SUVs with comfortable clearance on both sides.

Many newer homes opt for 9 feet wide by 7 feet tall doors. This extra foot of width provides easier access for larger vehicles like full-size trucks and SUVs. The additional space also helps when parking vehicles with extended side mirrors.

For homeowners with trucks or vans, 10 feet wide by 7 feet tall represents the upper range of single-door options. This width offers the most maneuvering room but costs more than narrower alternatives.

Height variations include 8-foot tall doors for garages with higher ceilings. Taller doors work well for vehicles with roof racks or for homeowners who want additional vertical clearance. However, 7-foot heights remain the national standard.

Two-Car Garage Door Dimensions

The standard 2 car garage door size is 16 feet wide by 7 feet tall. This single-panel door provides enough width for two vehicles parked side-by-side with minimal space between them.

How many centimeters is a 2 car garage door? A standard 16-foot wide door converts to approximately 487 centimeters wide by 213 centimeters tall. This conversion helps when ordering doors from manufacturers who use metric measurements.

Alternative double garage door dimensions include 14 feet wide and 18 feet wide options. The 14-foot width works for smaller vehicles or tighter spaces, while 18-foot doors accommodate larger trucks or provide extra maneuvering room.

Specialty Garage Door Sizes 

RV garage doors require significantly larger dimensions than standard residential options. Most RV doors measure 12 to 16 feet wide with heights ranging from 12 to 14 feet tall. The extra height accommodates motorhomes, campers, and tall recreational vehicles.

Commercial garage door sizes follow different standards. Common commercial dimensions include 10 feet by 10 feet for service bays and 12 feet by 12 feet or larger for loading docks. Some warehouses use doors measuring 20 feet wide or more.

Custom garage doors come into play when standard sizes don’t fit your opening or vehicle needs. Boat storage might require 14-foot wide by 10-foot tall doors. Classic car collectors often choose 10-foot wide doors to protect valuable vehicles during entry and exit.

Golf cart garages typically use smaller doors measuring 6 to 8 feet wide by 6 feet tall. These compact dimensions work perfectly for small utility vehicles and save money compared to full-size doors.

How to Measure Your Garage Door Opening 

Accurate measurement prevents costly installation problems. Start by measuring the width from inside edge to inside edge of the door frame. Use a steel tape measure for precision—cloth tapes can stretch and provide inaccurate readings.

Next, measure height from the garage floor to the bottom of the header. Take this measurement at three points (left, center, right) and use the smallest number. Garage floors often slope slightly for drainage.

Headroom refers to the space between the top of the door opening and the ceiling. Standard installations require 12 inches of headroom for most door systems. High-lift and special track systems may need 18-24 inches.

Side room means the space on each side of the door opening. Most installations need 3.75 to 4 inches on each side for track mounting. Measure from the door edge to the nearest wall or obstruction.

More Dimension: YouTube Video Best Dimensions for 2026 

FAQ’s 

What are standard garage door dimensions?

Standard dimensions include 8’x7′, 9’x7′, and 10’x7′ for single-car garages. Double-car garages typically use 16’x7′ doors. These sizes fit approximately 80% of residential garages in the United States and offer the best value due to mass production.

What is the size of a 2 car garage door?

The most common 2 car garage door measures 16 feet wide by 7 feet tall. Some homeowners choose 14-foot or 18-foot widths depending on vehicle size and garage layout. Height options include 7-foot or 8-foot tall panels.

How many centimeters is a 2 car garage door?

A standard 16-foot by 7-foot garage door converts to approximately 487 centimeters wide by 213 centimeters tall. This metric measurement helps when comparing international door specifications or ordering from manufacturers using the metric system.

What is the size of a 1.5 car garage in feet?

A 1.5 car garage door typically measures 12 to 14 feet wide by 7 feet tall. The interior garage space ranges from 14 to 16 feet wide, providing room for one vehicle plus storage or workspace. This size bridges the gap between single and double garages.

What’s better, a 1¼ or ¾ garage door opener?

For single-car doors up to 10 feet wide, a ¾ HP opener provides sufficient power. Double-car doors, insulated doors, and any door over 200 pounds require a 1¼ HP opener. The stronger motor ensures reliable operation and longer equipment life.

How wide is a normal 2 car garage?

Interior garage width typically measures 18 to 20 feet for a two-car garage. This accommodates a 16-foot door plus wall framing and allows some storage space. The extra width ensures proper door track installation and operation.

What is the most common garage size?

The 16-foot by 7-foot double garage door represents the most common size in American residential construction. For interior garage dimensions, 20 feet wide by 20 feet deep has become the standard for two-car garages built since 2000.

Are most doors 32 or 36 inches?

This question refers to entry doors, not garage doors. Standard residential entry doors measure 36 inches wide. Garage doors measure in feet—typically 8 to 16 feet wide. The two door types follow completely different sizing standards.

What is the size of a standard garage door in meters?

In metric measurements, a single-car door (9’x7′) equals 2.74 meters wide by 2.13 meters tall. A double-car door (16’x7′) measures 4.88 meters wide by 2.13 meters tall. These conversions help with international product comparisons.

Conclusion

Standard garage door dimensions range from 8’x7′ for single cars to 16’x7′ for double garages, with specialty sizes available for RVs and commercial applications. Choosing the right size depends on your vehicles, garage structure, and budget.

Measure carefully before ordering. Standard sizes save money and installation time compared to custom options. Match your door size to the appropriate opener horsepower for reliable long-term performance.