Area units calculator & converter tool
Acre Conversions Table
Equivalent of 9 Acre: |
36421.764027438 m2 (Square meter) |
364217640.27438 cm2 (Square centimeter) |
3642176.4027438 dm2 (Square decimeter) |
36421764027.438 mm2 (Square milimeter) |
0.036421764027438 km2 (Square Kilometer) |
3.6421764027438 Hectare |
364.21764027438 Are |
36.421764027438 Decare |
36421.764027438 Centiare |
10.653548086846 Arpent |
36421764.027438 Barn |
392040.22581494 Square feet |
1440.0036421764 Square perche |
0.014062443090994 Square mil |
43560.065559175 Square yard |
56453902.787747 Square inch |
0.00039080552801441 Canton |
0.056235203658364 Homestead |
35.999271564719 Rood |
Acre / Feet2 Units Definition
Acre
The acre (/ˈeɪkər/ AY-kər) is a unit of land area used in the British imperial and the United States customary systems. It is traditionally defined as the area of one chain by one furlong (66 by 660 feet), which is exactly equal to 10 square chains, 1⁄640 of a square mile, 4,840 square yards, or 43,560 square feet, and approximately 4,047 m2, or about 40% of a hectare. Based upon the international yard and pound agreement of 1959, an acre may be declared as exactly 4,046.8564224 square metres. The acre is sometimes abbreviated ac but is usually spelled out as the word "acre".
Square feet
The square foot is a unit used to measure area. Use one of the conversion calculators below to switch to another unit of measurement, or read on to learn more about square feet.