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Convert Area from Square Foot to Square Mile (ft2 to mi2)
Multiple conversions

Multiple conversions

On This Page

Square Foot to Square Mile Conversion FormulaExampleWhat is a Square Foot (ft²)?How Big is a Square Foot?Why Square Feet Are Essential in Real EstateHow to Convert Square Feet to Square Meters (m²)How to Calculate Square FootageWhat is a (mi²)?Why is London's Financial Center Called the ""?How Do You Convert to Other Units?How is the Used in the United States?What is the imperial system?Square Foot to Square Mile Conversion Table

Square Foot to Square Mile Conversion Formula

To convert from Square Foot (ft2) to Square Mile (mi2), use the following formula:

 Square Mile (mi2)\textbf{ Square Mile} \text{ (mi2)}

=127878400× Square Foot (ft2)= \frac{1}{27878400}\times \textbf{ Square Foot} \text{ (ft2)}

=3.5870064279155188246×10−8× Square Foot (ft2)= 3.5870064279155188246\times 10^{-8}\times \textbf{ Square Foot} \text{ (ft2)}

Example

Let's convert 5 Square Foot (ft2) to Square Mile (mi2).

Using the formula:

5×3.5870064279155188246×10−8=1.7935032139577594123×10−75 \times 3.5870064279155188246\times 10^{-8} = 1.7935032139577594123\times 10^{-7}

Therefore, 5 Square Foot (ft2) is equal to 1.7935032139577594123×10−71.7935032139577594123\times 10^{-7} Square Mile (mi2).

What is a Square Foot (ft²)?

A square foot (ft²) is a unit of area used in the imperial system of measurement, which is common in the United States. Its plural form is square feet.

It's a fundamental measurement for understanding the size of any physical space.

How Big is a Square Foot?

A square foot is simply the area of a square with sides that are one foot long.

Since a foot equals 12 inches, that same space measures 12 by 12 inches, or 144 square inches in total.

For a quick comparison, a standard sheet of printer paper is smaller than one square foot. It's this straightforward measurement that makes it the standard for measuring rooms, houses, and floor plans.

Why Square Feet Are Essential in Real Estate

In the United States real estate market, the square foot is the most common unit used to describe the size of a property.

This measurement, known as "square footage," represents the total floor area of apartments, houses, and commercial buildings.

Square footage is a primary factor in determining a property's value, rental price, and marketability.

Buyers and renters rely on this number to compare different properties and understand precisely how much living or working space they are getting. For example, knowing a bedroom is 120 square feet helps you visualize if your queen-sized bed will fit comfortably.

How to Convert Square Feet to Square Meters (m²)

Since many parts of the world use the metric system, knowing how to convert square feet to square meters is essential.

The conversion is:

  • 1 square foot ≈ 0.0929 square meters (1ft² ≈ 0.0929m²)

This conversion is crucial for international business, science, and real estate, as it enables a clear understanding of the area, regardless of the measurement system used.

How to Calculate Square Footage

Calculating the square footage of a rectangular or square area is simple. You need to multiply the length of the space by its width.

Formula: Length × Width = Square Footage

For example, if a room is 10 feet long and 12 feet wide, its square footage is 120 ft² (10 ft × 12 ft = 120 ft²).

What is a Square Mile (mi²)?

A square mile (mi²), with its plural form being square miles, is an imperial unit of area equal to 27,878,400 square feet (ft²).

Why is London's Financial Center Called the "Square Mile"?

The "Square Mile" is the famous nickname for the City of London, the historic heart and central financial district of London, England.

This nickname comes from its compact geographical area of just 1.12 square miles (2.90 km²).

Despite its small size, it remains a global hub for finance and business, home to landmarks like the Bank of England and the London Stock Exchange.

How Do You Convert Square Miles to Other Units?

Converting square miles to other units is essential for comparing land areas globally.

One square mile is equivalent to:

  • 2.59 square kilometers (km²)
  • 640 acres
  • 259 hectares

This is especially useful when comparing data from countries that use the imperial system (like the United States) with those that use the metric system.

How is the Square Mile Used in the United States?

In the United States, the square mile is a fundamental unit in the Public Land Survey System (PLSS).

This system, used since 1785 to survey and sell land, is based on a grid. Here's how it works:

  • Land is divided into square townships, each measuring six miles on each side.
  • Each township is then divided into 36 sections.
  • Each section measures exactly one square mile (or 640 acres).

What is the imperial system?

The imperial system is a system of measurement that was first defined in the British Weights and Measures Act of 1824. It's known for using units like inches, feet, pounds, and gallons. While most of the world now uses the metric system, the imperial system remains the official system of measurement in the United States and is still used in specific contexts in other countries, such as the United Kingdom and Canada.

Square Foot to Square Mile Conversion Table

Here are some quick reference conversions from Square Foot (ft2) to Square Mile (mi2):

Square FeetSquare Miles
0.000001 ft23.5870064279155188246×10−143.5870064279155188246\times 10^{-14} mi2
0.001 ft23.5870064279155188246×10−113.5870064279155188246\times 10^{-11} mi2
0.1 ft23.5870064279155188246×10−93.5870064279155188246\times 10^{-9} mi2
1 ft23.5870064279155188246×10−83.5870064279155188246\times 10^{-8} mi2
2 ft27.1740128558310376492×10−87.1740128558310376492\times 10^{-8} mi2
3 ft21.0761019283746556474×10−71.0761019283746556474\times 10^{-7} mi2
4 ft21.4348025711662075298×10−71.4348025711662075298\times 10^{-7} mi2
5 ft21.7935032139577594123×10−71.7935032139577594123\times 10^{-7} mi2
6 ft22.1522038567493112948×10−72.1522038567493112948\times 10^{-7} mi2
7 ft22.5109044995408631772×10−72.5109044995408631772\times 10^{-7} mi2
8 ft22.8696051423324150597×10−72.8696051423324150597\times 10^{-7} mi2
9 ft23.2283057851239669421×10−73.2283057851239669421\times 10^{-7} mi2
10 ft23.5870064279155188246×10−73.5870064279155188246\times 10^{-7} mi2
20 ft27.1740128558310376492×10−77.1740128558310376492\times 10^{-7} mi2
30 ft20.00000107610192837465564740.0000010761019283746556474 mi2
40 ft20.00000143480257116620752980.0000014348025711662075298 mi2
50 ft20.00000179350321395775941230.0000017935032139577594123 mi2
100 ft20.00000358700642791551882460.0000035870064279155188246 mi2
1000 ft20.0000358700642791551882460.000035870064279155188246 mi2
10000 ft20.000358700642791551882460.00035870064279155188246 mi2

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