# Square Feet to Acres (ft² to ac)

## Square Feet to Acres (ft² to ac) conversion calculator

Acres to Square Feet (Swap units)

1ft² = 2.0E-5ac

Note: You can increase or decrease the accuracy of this answer by selecting the number of significant figures required from the options above the result.

### Square Feet to Acres conversion formula

Acres = Square Feet / 43554.00696864

### Square Feet to Acres calculation

Acres = Square Feet / 43554.00696864

Acres = 1 / 43560.025090549

Acres = 2.0E-5

## What are Square Feet?

Square feet are units of measurement used to quantify area in the English/ Imperial system. Square feet is a unit commonly used in the imperial and US customary systems.

A square foot is a unit of area equal to a square with sides that are each one foot long. It is often used to measure the size of rooms, houses, and small plots of land.

## What are Acres?

Acres are units of measurement used to quantify land area. An acre is a unit of area commonly used in the imperial and US customary systems, equal to 43,560 square feet or about 4,047 square meters. Originally, an acre was defined as the amount of land a yoke of oxen could plow in one day. Acres are commonly used in real estate and agriculture to measure the size of land parcels.

While acres are more commonly used in the United States and some other countries following the imperial system, hectares are the preferred unit of measurement in most of the world due to their simplicity and compatibility with the metric system.

Starting value
Increment
Accuracy
Square Feet
Acres
0ft²
0.00000ac
1ft²
0.00002ac
2ft²
0.00005ac
3ft²
0.00007ac
4ft²
0.00009ac
5ft²
0.00011ac
6ft²
0.00014ac
7ft²
0.00016ac
8ft²
0.00018ac
9ft²
0.00021ac
10ft²
0.00023ac
11ft²
0.00025ac
12ft²
0.00028ac
13ft²
0.00030ac
14ft²
0.00032ac
15ft²
0.00034ac
16ft²
0.00037ac
17ft²
0.00039ac
18ft²
0.00041ac
19ft²
0.00044ac
Square Feet
Acres
20ft²
0.00046ac
21ft²
0.00048ac
22ft²
0.00051ac
23ft²
0.00053ac
24ft²
0.00055ac
25ft²
0.00057ac
26ft²
0.00060ac
27ft²
0.00062ac
28ft²
0.00064ac
29ft²
0.00067ac
30ft²
0.00069ac
31ft²
0.00071ac
32ft²
0.00073ac
33ft²
0.00076ac
34ft²
0.00078ac
35ft²
0.00080ac
36ft²
0.00083ac
37ft²
0.00085ac
38ft²
0.00087ac
39ft²
0.00090ac
Square Feet
Acres
40ft²
0.00092ac
41ft²
0.00094ac
42ft²
0.00096ac
43ft²
0.00099ac
44ft²
0.00101ac
45ft²
0.00103ac
46ft²
0.00106ac
47ft²
0.00108ac
48ft²
0.00110ac
49ft²
0.00112ac
50ft²
0.00115ac
51ft²
0.00117ac
52ft²
0.00119ac
53ft²
0.00122ac
54ft²
0.00124ac
55ft²
0.00126ac
56ft²
0.00129ac
57ft²
0.00131ac
58ft²
0.00133ac
59ft²
0.00135ac
Square Feet
Acres
60ft²
0.00138ac
61ft²
0.00140ac
62ft²
0.00142ac
63ft²
0.00145ac
64ft²
0.00147ac
65ft²
0.00149ac
66ft²
0.00152ac
67ft²
0.00154ac
68ft²
0.00156ac
69ft²
0.00158ac
70ft²
0.00161ac
71ft²
0.00163ac
72ft²
0.00165ac
73ft²
0.00168ac
74ft²
0.00170ac
75ft²
0.00172ac
76ft²
0.00174ac
77ft²
0.00177ac
78ft²
0.00179ac
79ft²
0.00181ac