Approximately How Many Doors Are in the World

Approximately How Many Doors Are in the World

Doors are an essential part of our everyday lives. We encounter them countless times throughout the day, whether at home, in the office, or in public places. But have you ever wondered just how many doors are there in the world? While it is nearly impossible to pinpoint an exact number, we can make an estimation based on various factors.

Estimating the total number of doors worldwide is a daunting task due to the sheer number of buildings and structures. However, we can consider a few key factors to approximate the figure. Firstly, we need to consider the global population, which currently stands at around 7.9 billion people. Assuming that each person has an average of two doors in their residence, this accounts for approximately 15.8 billion doors in residential buildings alone.

Next, we consider commercial and public spaces. These include office buildings, schools, hospitals, shopping malls, airports, and more. As these places tend to have a higher concentration of doors, we can estimate an average of 10 doors per building. With millions of such buildings worldwide, it is safe to assume that there are billions of doors in these spaces.

Furthermore, we must account for industrial buildings, warehouses, and factories that often have numerous doors for various purposes, such as loading docks, storage areas, and employee access points. While it is challenging to provide an accurate estimate for this sector, it is fair to assume that there are millions of doors within these structures.

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Another factor to consider is transportation. Vehicles, including cars, buses, trains, and airplanes, all have doors. Considering the billions of vehicles on the planet, each with at least one or more doors, this adds a significant number to the overall count.

Lastly, we cannot forget about doors in historical buildings, museums, religious structures, and other architectural wonders. These doors not only serve as entrances and exits but also hold cultural and historical significance.

In conclusion, while it is impossible to determine the exact number of doors in the world, we can safely estimate that there are billions of doors across residential, commercial, industrial, transportation, and historical sectors.


1. How many doors are there in an average home?
The average home has approximately 10 to 15 doors, including interior and exterior doors.

2. How many doors are there in an average office building?
The number of doors in an office building can vary greatly depending on its size and purpose. On average, there can be around 20 to 30 doors in a typical office building.

3. Are all doors counted, including cabinet doors and cupboard doors?
While it is difficult to account for every single door, our estimation primarily focuses on doors that serve as entrances, exits, or significant access points.

4. Do revolving doors count?
Yes, revolving doors are indeed counted as doors.

5. Are garage doors included in the estimation?
Yes, garage doors are included in the count, as they are essential access points to residential and commercial spaces.

6. How many doors are there in a shopping mall?
Shopping malls can have hundreds or even thousands of doors, depending on their size and layout.

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7. Are there any doors that are not counted?
Doors that are purely decorative or do not serve any functional purpose are not included in the estimation.

8. How many doors are there on an average school building?
An average school building may have anywhere between 30 to 50 doors, including classroom doors, office doors, and main entrances.

9. Do emergency exit doors count?
Yes, emergency exit doors are counted, as they are crucial for safety and evacuation procedures.

10. Are there more doors in urban areas compared to rural areas?
Yes, urban areas tend to have a higher concentration of buildings, resulting in more doors compared to rural areas.

11. How many doors are there in an airplane?
The number of doors on an airplane can vary depending on the aircraft type. Commercial airplanes typically have multiple doors, including emergency exits.

12. Are there any famous doors in the world?
Yes, several doors have gained fame for their historical or cultural significance, such as the doors of Notre Dame Cathedral in Paris or the doors of the Sistine Chapel in Vatican City.