Do you know how many doors there are in the world? Probably not.
Unless you have an unusual obsession with counting houses, windows and doorways, most of us don’t think about it much. However, the number of doors in the world is quite fascinating because there are a lot of them.
In fact, there are so many that we can’t even begin to imagine how many there really are. Doors help us keep out pests and unwanted guests while keeping our homes secure and private at the same time.

Today, we will take a look at various facts about doors and see why they are so important to us all.
How Many Doors Are In The World?
Nobody really knows how many doors there are in the world. Because there is no central data source that keeps track of every door in existence. However take a look at the numbers from different industries and see what kind of numbers we get.
If we take the number of houses, condos and apartments in North America, for example, and add the estimated number of businesses that have their own entrance doors, plus the approximate number of doors on public buildings and institutions, we can get a pretty good idea of how many doors exist.
And the number is staggering around 4 billion.
If we add up all the doors in the world, we will end up with more than 4 billion. We know that these numbers are only estimates, but they are based on facts and data from reliable sources. We can say that there are definitely more than 4 billion doors in the world.
How Many Doors are In The World vs Wheels?
There are many ways to answer this question, but one way to think of it is that there are infinitely many wheels in the world, but only a finite number of doors.
Another way to think about it is that a wheel can go anywhere, but a door is only useful in one specific place.
So, while there are many wheels in the world, there are only a finite number of doors.
Why Doors Are so Important?
One of the most important things about doors is that they keep pests out of our homes and yards. You might not like the idea of killing or trapping mice, rats, flies and other pests, but there are ways to keep them out of your home without harming them.
For example, you can use insecticides to kill flies, ants and other pests that can harm us. You can also install screen doors at your front and back doors to keep out insects like mosquitoes, flies and other pests.
If you have a pet, you can keep pests out of your home by closing the door behind your pet and keeping the inside of your house pest-free.
The Average Door Size and Material
The average door size is 80 inches high, which is 6 feet and 8 inches. The average width is 32 inches, which is 2 feet and 4 inches. These measurements are based on standard commercial and residential door sizes.
When it comes to the material used to make doors, wood remains the most popular option. It is estimated that 80% of the world doors are made of wood.

The second most popular door material is metal. It is estimated that 14% of commercial and residential doors are made of metal. It is a highly durable material and it is easy to clean and maintain. The main disadvantage is that it is heavy.
Doors Are Literally Everywhere
You might not have realized this, but there are doors almost everywhere. You have them in your home, in your car, on your fridge, and in many other places as well. There are also doors in places where you would not expect them to be. Many large ships also have doors that allow people to enter and exit. The doors are large enough to accommodate large vehicles and even boats.
Final Words
When we look at the facts about doors, we can see just how important they are. And once we start to think about it, we can see doors everywhere.
There are an infinite number of doors in the world. Each one has the potential to lead to a new adventure, a new opportunity, or a new experience.
While we may never know exactly how many doors there are, we can be sure that each and every one of them is worth exploring. So go out and open some doors.