# Square Miles to Square Kilometers Converter

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Convert Square Kilometers to Square Miles (sq km to sq mi) ▶

## Conversion Table

 square miles to square kilometers sq mi sq km 1 sq mi 2.59 sq km 2 sq mi 5.18 sq km 3 sq mi 7.77 sq km 4 sq mi 10.36 sq km 5 sq mi 12.9499 sq km 6 sq mi 15.5399 sq km 7 sq mi 18.1299 sq km 8 sq mi 20.7199 sq km 9 sq mi 23.3099 sq km 10 sq mi 25.8999 sq km 11 sq mi 28.4899 sq km 12 sq mi 31.0799 sq km 13 sq mi 33.6698 sq km 14 sq mi 36.2598 sq km 15 sq mi 38.8498 sq km 16 sq mi 41.4398 sq km 17 sq mi 44.0298 sq km 18 sq mi 46.6198 sq km 19 sq mi 49.2098 sq km 20 sq mi 51.7998 sq km

## How to convert

1 square mile (sq mi) = 2.58998811 square kilometer (sq km). Square Mile (sq mi) is a unit of Area used in Standard system. Square Kilometer (sq km) is a unit of Area used in Metric system.

## Square Mile: A Unit of Area

A square mile is a unit of area that measures the size of a surface. It is defined as the area of a square whose sides are one mile long. A square mile is equal to 640 acres, 2589988.11 square meters, or 2590000 square yards. It is also a common unit of area in the United States customary system and the imperial system.

## How to Convert Square Mile to Other Units

To convert a square mile to other units of area, we need to multiply or divide by a conversion factor. A conversion factor is a number that relates two units of measurement. For example, to convert a square mile to a square meter, we need to multiply by 2589988.11, which is the conversion factor between these two units. Here are some common conversion factors for square mile and other units of area:

• 1 square mile = 2589988.11 square meters
• 1 square mile = 640 acres
• 1 square mile = 2590000 square yards
• 1 square mile = 27878400 square feet
• 1 square mile = 4014489600 square inches
• 1 square mile = 25899881100 square centimeters
• 1 square mile = 2589988110000 square millimeters
Square miles can also be marked as mi2.

## Square Kilometer: A Unit of Area

A square kilometer is a unit of area that measures the size of a surface. It is defined as the area of a square whose sides are one kilometer long. A square kilometer is equal to 1,000,000 square meters, 100 hectares, or 0.386102 square miles. It is also the base unit of area in the metric system.

## How to Convert Square Kilometer to Other Units

To convert a square kilometer to other units of area, we need to multiply or divide by a conversion factor. A conversion factor is a number that relates two units of measurement. For example, to convert a square kilometer to a square mile, we need to multiply by 0.386102, which is the conversion factor between these two units. Here are some common conversion factors for square kilometer and other units of area:

• 1 square kilometer = 0.386102 square miles
• 1 square kilometer = 247.105 acres
• 1 square kilometer = 100 hectares
• 1 square kilometer = 1000000 square meters
• 1 square kilometer = 10000000000 square centimeters
• 1 square kilometer = 1000000000000 square millimeters
Square kilometers also can be marked as Square kilometres and km2.

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