Here you can convert the Area unit Square Foot into the unit Acre and vice versa you can convert Acre into Square Foot. By clicking the "Swap units" icon, you will always obtain the desired conversion in the calculation result, i.e., ft² to ac or ac to ft². With the following calculator you can also calculate any other Area unit.
Info about "Square Foot"
A square foot (ft²; plural square feet) is equal to the area of a square with a side length of one foot (30.48 cm).
1 ft² = 1 ft × 1 ft
1 ft² = 30,48 cm × 30,48 cm
A foot is 12 inches long in the Anglo-American system and thus a square foot has 144 square inches. In the Anglo-American world, the size of land is indicated in land and property surveys using only the two area units, acre and square foot.
Info about "Acre"
An acre (ac) is equal to one 160th part of a quarter section or one 640th part of a square mile. Thus, the acre has the area of a square with a side length of about 63.62 meters.
1 ac ≈ 63,62 m × 63,62 m
The unit acre (Old English æcer acre, field) originally referred to a strip of land that could be plowed in one day with a team of oxen.
The unit of area known as the acre is now a common unit for subdividing land areas, especially in America. These are initially divided into square miles (sections) and into quarters of these sections, namely quarters. A quarter section, in turn, consists of 160 acres. In the Anglo-American world, the size of properties in land and property surveys is indicated solely by the two area units acre and square foot.
1/640 square mile = 1/160 quarter = 1 acre = 4.840 square yards = 43.560 square feet = 6.272.640 square inches = 4.046,85642 m²
Basis for conversion Square Foot (ft²) to Acre (ac) and vice versa
The abbreviation for the "Area unit Square Foot" is ft². The abbreviation for the "Area unit Acre" is ac.
Formula for the conversion of Square Foot (ft²) to Acre (ac) and vice versa
The calculation from Square Foot to Acre shall be made using the following conversion formula:
Conversion formula Square Foot to Acre |
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Determine the number of Acre from Square Foot Square Foot × 0.00024710538146717 |
Formula for the conversion of Acre (ac) to Square Foot (ft²)
The calculation from Acre to Square Foot shall be made using the following conversion formula:
Conversion formula Acre to Square Foot |
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Determine the number of Square Foot from Acre Acre × 4046.8564224 |
Overview table : How many Square Foot are in a Acre ?
Square Foot ft² ⇒ Acre ac |
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0.04 ft² are 0.00001 ac |
0.05 ft² are 0.00001 ac |
0.06 ft² are 0.00001 ac |
0.07 ft² are 0.00001 ac |
0.08 ft² are 0.00002 ac |
0.09 ft² are 0.00002 ac |
0.10 ft² are 0.00002 ac |
0.20 ft² are 0.00004 ac |
0.30 ft² are 0.00007 ac |
0.40 ft² are 0.00009 ac |
0.50 ft² are 0.00012 ac |
0.60 ft² are 0.00014 ac |
0.70 ft² are 0.00017 ac |
0.80 ft² are 0.00019 ac |
0.90 ft² are 0.00022 ac |
1 ft² corresponds to 0.00024 ac |
2 ft² are 0.00049 ac |
3 ft² are 0.00074 ac |
4 ft² are 0.00098 ac |
5 ft² are 0.00123 ac |
6 ft² are 0.00148 ac |
7 ft² are 0.00173 ac |
8 ft² are 0.00197 ac |
9 ft² are 0.00222 ac |
10 ft² are 0.00247 ac |
20 ft² are 0.00494 ac |
30 ft² are 0.00741 ac |
40 ft² are 0.00988 ac |
50 ft² are 0.01235 ac |
60 ft² are 0.01482 ac |
70 ft² are 0.01729 ac |
80 ft² are 0.01976 ac |
90 ft² are 0.02223 ac |
100 ft² are 0.02471 ac |
200 ft² are 0.04942 ac |
300 ft² are 0.07413 ac |
400 ft² are 0.09884 ac |
500 ft² are 0.12355 ac |
600 ft² are 0.14826 ac |
700 ft² are 0.17297 ac |
800 ft² are 0.19768 ac |
900 ft² are 0.22239 ac |
1 000 ft² are 0.24710 ac |
Overview table : How many Acre are in a Square Foot ?
Acre ac ⇒ Square Foot ft² |
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0.01 ac are 40.46856 ft² |
0.02 ac are 80.93712 ft² |
0.03 ac are 121.40569 ft² |
0.04 ac are 161.87425 ft² |
0.05 ac are 202.34282 ft² |
0.06 ac are 242.81138 ft² |
0.07 ac are 283.27995 ft² |
0.08 ac are 323.74851 ft² |
0.09 ac are 364.21707 ft² |
0.10 ac are 404.68564 ft² |
0.20 ac are 809.37128 ft² |
0.30 ac are 1 214.05692 ft² |
0.40 ac are 1 618.74256 ft² |
0.50 ac are 2 023.42821 ft² |
0.60 ac are 2 428.11385 ft² |
0.70 ac are 2 832.79949 ft² |
0.80 ac are 3 237.48513 ft² |
0.90 ac are 3 642.17078 ft² |
1 ac corresponds to 4 046.85642 ft² |
2 ac are 8 093.71284 ft² |
3 ac are 12 140.56926 ft² |
4 ac are 16 187.42569 ft² |
5 ac are 20 234.28211 ft² |
6 ac are 24 281.13853 ft² |
7 ac are 28 327.99495 ft² |
8 ac are 32 374.85137 ft² |
9 ac are 36 421.70780 ft² |
10 ac are 40 468.56422 ft² |
20 ac are 80 937.12844 ft² |
30 ac are 121 405.69267 ft² |
40 ac are 161 874.25689 ft² |
50 ac are 202 342.82112 ft² |
60 ac are 242 811.38534 ft² |
70 ac are 283 279.94956 ft² |
80 ac are 323 748.51379 ft² |
90 ac are 364 217.07801 ft² |
100 ac are 404 685.64224 ft² |
200 ac are 809 371.28448 ft² |
300 ac are 1 214 056.92672 ft² |
400 ac are 1 618 742.56896 ft² |
500 ac are 2 023 428.21120 ft² |
600 ac are 2 428 113.85344 ft² |
700 ac are 2 832 799.49568 ft² |
800 ac are 3 237 485.13792 ft² |
900 ac are 3 642 170.78016 ft² |
1 000 ac are 4 046 856.42240 ft² |
Source information
As source for the information in the 'Area Units' category, we have used in particular:
Last update on February 20, 2023
The pages of the 'Area Units' category were last editorially reviewed by Michael Mühl on February 20, 2023. They all correspond to the current status.
Previous changes on November 28, 2022
- 14.11.2022: Publication of Area Converter together with associated texts.
- Editorial revision of all texts in this category