Acre

ac

Commonly Used

The acre is one of the most commonly used imperial units for land measurement. Its definition as 43,560 square feet makes it convenient for measuring land plots and properties.

Quick Converter

1 ac = cm2

Controls display format. Very small or very large numbers will be shown in scientific notation (e.g., 1.5e-6).

Acre

The acre is one of the most commonly used imperial units for land measurement. Its definition as 43,560 square feet makes it convenient for measuring land plots and properties.

Characteristics

  • Imperial system unit (land measurement)
  • 1 acre = 43,560 ft²
  • 1 acre = 4,840 yd²
  • 1 acre = 0.404686 hectares
  • Common in: real estate, agriculture, land surveying

Conversions

  • 1 ac = 43,560 ft²
  • 1 ac = 4,840 yd²
  • 1 ac = 0.404686 hectares
  • 1 ac = 4046.86 m²
  • 1 ac = 0.00156250 mi²
  • 1 ac = 0.00404686 km²
  • 640 acres = 1 square mile

Used In Regions

US UK Canada Agriculture