Convert square kilometer [km^2] to acre (US survey) [ac] Online | Free area Converter

Square Kilometer [km²]

A square kilometer (km²) is a unit of area equal to a square that is 1 kilometer on each side. It is commonly used to measure large areas such as cities, countries, or large land plots.

1 km² = 1,000,000 m².

Acre (US Survey) [ac]

The acre (US survey) is a unit of area used mainly in the United States for land measurement, based on the US survey foot. It is slightly different from the international acre due to the foot definition.

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  1 US survey acre = 43,560 US survey square feet

  
  
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  1 US survey acre ≈ 4,046.87261 square meters

  
  
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  Slightly larger than the international acre by about 0.0005%.

  
  

It is commonly used in land surveying, real estate, and agriculture.