Convert Square Miles to Square Feet
1 mi² = 27878410.82 ft²
Conversion Table
| square miles (mi²) | square feet (ft²) |
|---|---|
| 0.5 | 13939205.41 |
| 1 | 27878410.82 |
| 2 | 55756821.63 |
| 5 | 139392054.08 |
| 10 | 278784108.16 |
| 25 | 696960270.39 |
| 50 | 1393920540.78 |
| 100 | 2787841081.56 |
| 250 | 6969602703.9 |
| 500 | 13939205407.79 |
| 1000 | 27878410815.58 |
How to Convert square miles to square feet
To convert square miles to square feet, multiply the value by the conversion factor:
For example: 10 mi² = 278784108.16 ft²
About square miles and square feet
The Conversion Formula
To convert square miles to square feet, multiply the value by the conversion factor: 1 mi² = 27878410.82 ft². For a worked example, suppose you need to convert 25 mi² to square feet: 25 × 27878410.82 = 696960270.39 ft². To convert in the opposite direction, divide by 27878410.82, or equivalently multiply by 3.5870e-8.
About square miles
The square mile is an imperial unit of area equal to 640 acres. In the US, it is famously linked to the 'section' in the Public Land Survey System, which divided the American West into 1-mile grids. It is the standard for reporting town and county sizes in the US and UK. square miles are commonly used in City and state sizes (US), Population density (people/sq mi), Large ranch sales, and Weather systems, US Census data.
The island of Manhattan is roughly 23 square miles.
About square feet
The square foot (sq ft) is the defining unit of American real estate. Equal to 144 square inches, it dates back to medieval English measurement. While the world uses square meters, the US (and partially the UK/Canada) relies on square feet to define the size of homes, offices, and retail spaces. It is the unit that determines property value in the US market. square feet are commonly used in Home sizes (US/Canada), Office leasing, Retail store layout, and Painting estimates, Gardening plots.
A typical bedroom is about 100-150 square feet.
When Would You Convert square miles to square feet?
Converting between square miles and square feet is one of the most common area conversions. You might need this conversion when working with international specifications, following instructions written for a different measurement system, or comparing values across different standards. Having the conversion factor (1 mi² = 27878410.82 ft²) memorized or bookmarked can save time in professional and everyday contexts alike.