Convert Square Miles to Square Kilometers
1 mi² = 2.59 km²
Conversion Table
| square miles (mi²) | square kilometers (km²) |
|---|---|
| 0.5 | 1.295 |
| 1 | 2.59 |
| 2 | 5.18 |
| 5 | 12.9499 |
| 10 | 25.8999 |
| 25 | 64.7497 |
| 50 | 129.5 |
| 100 | 259 |
| 250 | 647.5 |
| 500 | 1294.99 |
| 1000 | 2589.99 |
How to Convert square miles to square kilometers
To convert square miles to square kilometers, multiply the value by the conversion factor:
For example: 10 mi² = 25.8999 km²
About square miles and square kilometers
The Conversion Formula
To convert square miles to square kilometers, multiply the value by the conversion factor: 1 mi² = 2.59 km². For a worked example, suppose you need to convert 25 mi² to square kilometers: 25 × 2.59 = 64.7497 km². To convert in the opposite direction, divide by 2.59, or equivalently multiply by 0.386102.
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 kilometers
The square kilometer (km²) is the metric unit for measuring cities, countries, and vast natural reserves. Equal to one million square meters or 100 hectares, it is the standard for geography. For example, when you read about the deforestation of the Amazon or the size of a new national park, the figures are usually in square kilometers. square kilometers are commonly used in Country and city areas, Forest fires, Lakes and oceans, and Population density, National parks.
Central Park in NYC is about 3.4 square kilometers.
When Would You Convert square miles to square kilometers?
Converting between square miles and square kilometers 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 = 2.59 km²) memorized or bookmarked can save time in professional and everyday contexts alike.