Sumwise

Square feet to acres

acres = square feet × 0.00002296

Reverse: acres to square feet

How to convert square feet to acres

One square foot is 0.00002296 acres, so multiply the number of square feet by 0.00002296. For example, 20 square feet is 20 × 0.00002296 = 0.00045914 acres. To go back, divide by the same number, or multiply by 43,560.

Quick estimate

Multiplying by about 0.00002 gets within 12.9% of the exact answer, which is enough to check that a result makes sense.

Where it comes up

Area conversions come up when buying flooring, paint or turf, comparing house and flat sizes, and measuring land and gardens.

square feetacres
1 ft20.00002296 ac
2 ft20.00004591 ac
3 ft20.00006887 ac
4 ft20.00009183 ac
5 ft20.00011478 ac
6 ft20.00013774 ac
7 ft20.0001607 ac
8 ft20.00018365 ac
9 ft20.00020661 ac
10 ft20.00022957 ac
11 ft20.00025253 ac
12 ft20.00027548 ac
13 ft20.00029844 ac
14 ft20.0003214 ac
15 ft20.00034435 ac
16 ft20.00036731 ac
17 ft20.00039027 ac
18 ft20.00041322 ac
19 ft20.00043618 ac
20 ft20.00045914 ac
25 ft20.00057392 ac
30 ft20.00068871 ac
40 ft20.00091827 ac
50 ft20.00114784 ac
60 ft20.00137741 ac
70 ft20.00160698 ac
75 ft20.00172176 ac
80 ft20.00183655 ac
90 ft20.00206612 ac
100 ft20.00229568 ac
120 ft20.00275482 ac
150 ft20.00344353 ac
200 ft20.00459137 ac
250 ft20.00573921 ac
300 ft20.00688705 ac
400 ft20.00918274 ac
500 ft20.01147842 ac
750 ft20.01721763 ac
1,000 ft20.02295684 ac
1,500 ft20.03443526 ac
2,000 ft20.04591368 ac
5,000 ft20.11478421 ac
10,000 ft20.22956841 ac

Questions

How many acres are in a square foot?

0.00002296 acres.

How do I convert square feet to acres in a spreadsheet?

Put the value in A1 and type =A1*0.00002296, then fill the formula down the column.

Are the values in the table exact?

They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.