What Size are Garage Doors?

When you are in the market for a new garage door, it can be hard to know exactly what size is right for your home. 

Garage doors come in all shapes and sizes, so choosing one that fits your needs can be difficult. You have to consider the width of your door opening and how high above ground level you want the door to open up as well as whether or not you need an automatic opener installed on it. So many factors go into deciding which garage door is right for your home!

This blog post will help guide you by picking out a perfect-sized garage door by considering some essential factors like doorway height and width of entryways. We’ll also discuss how much headroom should exist between the top of the overhead garage doors and any overhanging tree branches or other obstructions outside from view when they’re fully opened up.

Standard Garage Door Sizes For Homes 

A garage door is one of the most significant investments you’ll make in your home. Knowing what garage door size to get can help ensure that it suits your needs and is a good investment for security, convenience, and energy efficiency purposes.

It is essential to know the standard garage door sizes, as they are not all the same. 

The most commonly found in homes is a standard-sized door measuring either eight feet to ten feet wide and seven feet high for a single garage door.

A garage with some extra room along with a single car space usually measures twelve to fourteen feet in width. You’d want this if you plan to have some furniture or recreational vehicles in the garage along with your car.

If what you’re looking for is a two-car garage, then it would measure sixteen to eighteen feet in its width.

You can go for a combo of a single car and two-car garage door measurements for a three-car garage. You can either combine the two or add them to create a large door. But beware, the heavier the door, the more power it requires to open and close it. 

Also, in some cases, the width of the doorway opening can affect which size you should choose. The height of the opening of the door and the material of your roof come into play here, too, which is why you should consult an expert.

Pro Tip: Aside or walkthrough door is also essential to consider when you purchase a garage door. This can make it easier for car drivers and other people to enter your home, as they do not have to go around the whole house to get in.

How To Plan Your Garage Door

You know the standard sizes now, but if that is all you know, you might still end up making the wrong decision. Let me explain.

The door size is just part of the entire package, i.e., your garage. It would be best if you planned it out properly to use it effectively. 

Consider the following – 

Height of the opening of the door and material of your roof

The height of your roof is essential to consider since cars today are different from what they used to be 30 years ago. You don’t want to drive into your garage and find that it is too close a fit. Therefore,  you need to know the height of your garage and how high up it goes.

The material for your roof is also essential because you will want to choose materials that won’t dent or rust easily. This way, your door can stay in excellent condition for a long time.

Another thing worth considering is whether there are any obstructions on your roof. If there are, you need to measure the height of that obstruction and deduct it from your ceiling height.

Doing all this will ensure that it is in perfect working order for many years to come when you have your garage door installed.

The amount of headroom you want

Once inside your garage, you’ll want a good amount of headroom to comfortably move around—plan for the future in this area. You may not own a truck today, but you might tomorrow. Or, you might be in the habit of storing things in the garage and need the extra room. 

Planning ahead in this area will prove to be beneficial. Remember, it is always easier to scale down. Scaling up is naturally more troublesome. Whether you are planning a residential garage door or a commercial garage door, plan things ahead of time to save a lot of the renovation cost in the future.

Think about equipment, car length, and space in between

The next question you should ask yourself is – “How long is my car?” 

If you do not know, go to your car manufacturer’s website and find out the exact dimensions. This way, you’ll know if you’re picking the right length.

Next, think about lawnmowers, bicycles, tool sheds, or any other equipment you might store in your garage. Measure the height, width, and length of these items to get an idea about whether or not they’ll fit where you plan to put them.

When two vehicles are going into one side of a garage door opening, they should be separated by a minimum of six feet. If there is only one car, then the rear door can go as close to the opening as possible, but it must still have at least two feet on either side of it.

Also, think about how much space you want for walking in between cars. You must leave enough room for people and objects to walk in between the cars. At least three feet should be enough. This part is often overlooked but is one of the most critical.


I hope this article has helped you find the perfect size garage door for your home. Hopefully, I’ve provided enough information for you to conduct your search. Remember to calculate all aspects of your use case and decide the best.