Area units calculator & converter tool
Acre Conversions Table
Equivalent of 20 Acre: |
80937.253394306 m2 (Square meter) |
809372533.94306 cm2 (Square centimeter) |
8093725.3394306 dm2 (Square decimeter) |
80937253394.306 mm2 (Square milimeter) |
0.080937253394306 km2 (Square Kilometer) |
8.0937253394306 Hectare |
809.37253394306 Are |
80.937253394306 Decare |
80937.253394306 Centiare |
23.674551304101 Arpent |
80937253.394306 Barn |
871200.50181097 Square feet |
3200.0080937253 Square perche |
0.031249873535542 Square mil |
96800.145687056 Square yard |
125453117.30611 Square inch |
0.0008684567289209 Canton |
0.12496711924081 Homestead |
79.998381254932 Rood |
Acre / Pouce2 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 inch
A square inch (plural: square inches) is a unit of area, equal to the area of a square with sides of one inch.historic engineering drawings (number with a square & a double apostrophe, both as an exponent).The square inch is a common unit of measurement in the United States and the United Kingdom. A common unit of pressure, pound per square inch (psi) is derived from this unit of area.