Arpents to Acres (arpent to ac)
1 arpent (North American) equals 0.8448261176 acres (rounded).
How to convert arpents to acres
To convert arpents to acres, multiply the number of arpents by 0.8448261176. The factor is rounded to 10 significant digits. To go the other way, multiply acres by 1.183675527 (rounded).
acres = arpents × 0.8448261176
Example: 10 arpents = 8.448261176 acres.
Approximate value. Standards for the arpent (North American) varied by place and period, so this converter uses the most commonly cited value. Treat results as estimates, not exact figures.
About these units
Arpent (North American) (arpent)
About 3,419 m² (0.845 acre), a square of 180 French feet. Still used in Louisiana and Quebec land records. The older Paris arpent was larger, about 5,107 m².
Arpent probably descends from the Late Latin arepennis, half a jugerum, which may itself trace to a Gaulish word for the end of a field. French surveyors used it for land and forests, and the size changed from province to province. Wikipedia describes the Paris arpent as 220 French feet on a side, about 71.5 m, which gives roughly 5,107 square meters.
The smaller arpent of 180 French feet, about 58.5 m on a side, gives 32,400 square French feet, near 3,419 square meters or 0.845 acre. Wikipedia files this version under North America, where Louisiana grants usually fixed river frontage in arpents with plots 40 or more deep. Some states round it differently, to 0.84628 acre in Louisiana and 0.8507 acre in Arkansas and Missouri.
The figure used here is 3,418.9 square meters. Mauritius and Seychelles use yet another arpent, near 4,221 square meters, and Quebec land records still use the term.
1 arpent (North American) = 3,418.89 square meters (approximately).
Sources: Wikipedia: Arpent
Acre (ac)
43,560 square feet or exactly 4,046.8564224 m², about 40% of a hectare. Originally the area a yoke of oxen could plow in a day.
Ploughland gave the acre its name: it traces to Old Norse akr, meaning cultivated land, and is related to German Acker and Latin ager. In medieval England it was a farming measure, the land one man with a team of eight oxen could plough in a day. The traditional strip was 40 perches long and 4 perches wide, which is 660 by 66 feet, or ten square chains. The shape was never the point, and the article on the unit stresses that any area of 43,560 square feet is an acre.
An acre is 43,560 square feet, 4,840 square yards or 1/640 of a square mile, close to 0.4 hectare. For Americans, it is roughly 88 by 55 yards, about 90 percent of a football field without the end zones. The Weights and Measures Act 1878 fixed it at 4,840 square yards in Britain, where trade use ended in 1995. The 1959 international acre is exactly 4,046.8564224 m²; the US survey acre, about 4,046.872 m², differed slightly, and US survey units were retired after 2022.
1 acre = 4,046.856422 square meters (approximately).
Sources: Wikipedia: Acre; NIST Guide to the SI, Appendix B.8: conversion factors
Related conversions
- Acres to arpents (reverse)
- Arpents to square meters
- Arpents to square kilometers
- Arpents to hectares
- Arpents to square inches
- Arpents to square feet
- Arpents to square yards
- Arpents to square miles
- Square meters to acres
- Square kilometers to acres
- Hectares to acres
- Square inches to acres
- Square feet to acres
- Square yards to acres
- Square miles to acres
- Square centimeters to acres
- Square millimeters to acres
- Tsubo to acres
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See all area units.