Square Mile to Square Kilometer Converter

Convert Square Mile to Square Kilometer instantly for geographical measurement and land calculations

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Square Mile to Square Kilometer Converter

Convert Square Mile to Square Kilometer for geographical land area measurement

Quick values:
=
Square Kilometer
0 sq km

landMeasurement.conversionFormula

Square Kilometer = Square Mile × 2.58999

1 Square Mile = 2.58999 Square Kilometer

landMeasurement.squareMileToSquareKilometer.conversionTable

Square MileSquare Kilometer
12.59
512.95
1025.90
2564.75
50129.50
100259.00
200518.00
5001294.99
10002589.99

About Square Mile and Square Kilometer Conversion

Square Mile and Square Kilometer are large land measurement units used globally. Understanding the conversion between these units is essential for geographical planning, measuring country and city sizes, and land documentation.

What is Square Mile?

Square Mile (mi²) is an imperial and US customary unit of area measurement equal to the area of a square with sides one mile long. It is commonly used in the United States, United Kingdom, and other countries that use imperial units. One square mile equals approximately 2.58999 square kilometers or 640 acres.

What is Square Kilometer?

Square Kilometer (km²) is a metric area unit equal to 1,000,000 square meters. It is widely used around the world for measuring large land areas, cities, countries, and geographical regions. One square kilometer equals approximately 0.386102 square miles or 100 hectares.

Conversion Formula

Based on international standard where 1 Square Mile = 2.58999 Square Kilometers:

  • 1 Square Mile = 2.58999 Square Kilometers
  • 1 Square Kilometer = 0.386102 Square Miles (1 ÷ 2.58999)

Quick Reference Table

Common conversions from Square Mile to Square Kilometer and Hectares
Square MileSquare KilometerHectares
12.59259
512.951,295
1025.902,590
2564.756,475
10025925,900

Real World Examples

Large City

Scenario: A large city has a total area of 300 Square Miles.

Conversion: 300 Square Miles = 777 Square Kilometers

Country Area

Scenario: A small country has an area of 10,000 Square Miles.

Conversion: 10,000 Square Miles = 25,900 Square Kilometers

Protected Area

Scenario: 1000 Square Miles of protected forest.

Conversion: 1000 Square Miles = 2,590 Square Kilometers

Why Use Our Square Mile to Square Kilometer Converter?

Instant Accurate Results

Get precise conversions in real-time as you type

Multiple Unit Support

See conversions in square kilometers, hectares, acres, and more

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Frequently Asked Questions

What is Square Mile?
Square Mile (mi²) is an imperial and US customary unit of area equal to the area of a square with sides one mile long. 1 Square Mile = 2.58999 Square Kilometers = 640 acres.
How to convert Square Mile to Square Kilometer?
To convert Square Mile to Square Kilometer, multiply the Square Mile value by 2.58999. Formula: Square Kilometers = Square Miles × 2.58999. For example, 10 Square Miles = 10 × 2.58999 = 25.8999 square kilometers.
How many Square Kilometers in 1 Square Mile?
1 Square Mile is equal to approximately 2.58999 square kilometers. This is the precise conversion factor used globally.
Where is Square Mile used?
Square Mile is primarily used in the United States, United Kingdom, and other countries that use imperial units for measuring the area of cities, counties, and countries. It is a common unit in geographical data and land measurement.

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