Acre - Wikipedia
https://en.wikipedia.org/wiki/Acre
OverviewUS survey acresDescriptionUseEquivalence to other units of areaHistorical originLegacy acresSee alsoIn the international yard and pound agreement of 1959, the United States and five countries of the Commonwealth of Nations defined the international yard to be exactly 0.9144 metre. The US authorities decided that, while the refined definition would apply nationally in all other respects, the US survey foot (and thus the survey acre) would continue 'until such a time as it becomes desirable and expedient to readjust [it]'. By inference, an "international acre" may be calculated … Symbol: ac or acre SI units: ≈ 4,046.9 m² Unit of: Area
Symbol: ac or acre
SI units: ≈ 4,046.9 m²
Unit of: Area
DA: 86 PA: 82 MOZ Rank: 31 Up or Down: Up