With the world population projected to reach 9.7 billion people by the end of 2022, it’s no wonder that business is booming in the door industry. In fact, the global market for commercial doors is expected to grow from $27.5 billion in 2016 to $40.1 billion by 2021, at a CAGR of 6.4%. What does this mean for you? It means that if you’re looking to get into the door business, you have plenty of opportunity ahead of you. And if that’s not enough reason to invest, consider these seven tips for success in the door industry.

How to calculate how many doors are in the world

There are an estimated 1.3 billion doors in the world. That’s about one door for every three people on Earth! Doorknobs make up a large percentage of these doors, accounting for about 60% of all door installations.

In terms of sheer numbers, the United States leads the world in door installations with more than 370 million doors installed as of 2016. China is second with about 260 million doors, and Japan is third with about 210 million doors.

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The Five Best Countries to Spend Your Retirement in 2022

There are an estimated 260 million doors in the world. That means that for every person living today, there are about 5 doors available for them to choose from when it comes to their retirement.

Here are the five best countries to spend your retirement in 2022:

  1. Switzerland
  2. Singapore
  3. Norway
  4. Australia
  5. Canada

What does this mean for the world

There are an estimated 1.6 million doors in the world. This means that there are about 3.6 doors per person on Earth!

How many doors are in the world

The world has an estimated 1.29 trillion doors, according to a study published in the journal Science Advances. That’s more than there are people on Earth. The study was conducted by using data from Google Street View and measuring the size of each door in pixels.

How many doors will be in 2022

In 2022, the world will have a total of 1,328 doors. This number includes both residential and commercial doors.


The global population is over 7 billion and the number of doors in the world is unknown. Assuming a door for every two people, there would be around 21 million doors in the world. Assuming that each door is 10 ft wide by 10 ft tall, this would require 1,000,000,000 acres of land to contain all the doors.

Wylder Elio
I am a WordPress Developer, who has been programming for over 8 years. I have expertise in PHP, JavaScript, HTML and CSS. In addition to this, I also know SEO and Technical SEO as well as how to make your website rank on Google’s first page of search results.