What is a Square Mile?

The square mile is an imperial unit of area equal to the area of a square with sides of one mile (2.59 km²).

The acre is a unit of area equal to 43,560 square feet (4,046.86 m²), historically the area a team of oxen could plow in one day.

Where is Square Mile used in everyday life?

City areas, county sizes, population density, land surveys, and geographic comparisons.

What are common mistakes when converting Square Mile?

1 mi ≈ 1.609 km, but 1 mi² ≈ 2.59 km² (not 1.609). Area conversion squares the factor.

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Square Mile to Acre

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"1" Square Mile

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Square Mile (mi²)

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Square Meter(m²)Copy Answer
Square Kilometer(km²)Copy Answer
Square Hectometer(hm²)Copy Answer
Square Dekameter(dam²)Copy Answer
Square Decimeter(dm²)Copy Answer
Square Centimeter(cm²)Copy Answer
Square Millimeter(mm²)Copy Answer
Square Micrometer(µm²)Copy Answer
Square Nanometer(nm²)Copy Answer
Are(a)Copy Answer
Hectare(ha)Copy Answer
Square Inch(in²)Copy Answer
Square Foot(ft²)Copy Answer
Square Yard(yd²)Copy Answer
Acre(ac)Copy Answer
Acre (US Survey)(ac (US))Copy Answer
Square Foot (US Survey)(ft² (US))Copy Answer
Square Mile (US Survey)(mi² (US))Copy Answer
Barn(b)Copy Answer
Circular Inch(circ in)Copy Answer
Section(section)Copy Answer
Township(township)Copy Answer

22 conversions shown

How to Convert Square Mile to Acre

To convert mi² to km²: multiply by 2.59. To acres: multiply by 640. To hectares: multiply by 259.

1 mi² = 640 acres = 27,878,400 ft² = 2.59 km² = 259 ha.

For example, 1 Square Mile (mi²) = 640 Acre (ac).