Sumwise

Square inches to square feet

square feet = square inches × 0.00694444

Reverse: square feet to square inches

How to convert square inches to square feet

One square inch is 0.00694444 square feet, so multiply the number of square inches by 0.00694444. For example, 20 square inches is 20 × 0.00694444 = 0.13888889 square feet. To go back, divide by the same number, or multiply by 144.

Quick estimate

Multiplying by about 0.007 gets within 0.8% 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 inchessquare feet
1 in20.00694444 ft2
2 in20.01388889 ft2
3 in20.02083333 ft2
4 in20.02777778 ft2
5 in20.03472222 ft2
6 in20.04166667 ft2
7 in20.04861111 ft2
8 in20.05555556 ft2
9 in20.0625 ft2
10 in20.06944444 ft2
11 in20.07638889 ft2
12 in20.08333333 ft2
13 in20.09027778 ft2
14 in20.09722222 ft2
15 in20.10416667 ft2
16 in20.11111111 ft2
17 in20.11805556 ft2
18 in20.125 ft2
19 in20.13194444 ft2
20 in20.13888889 ft2
25 in20.17361111 ft2
30 in20.20833333 ft2
40 in20.27777778 ft2
50 in20.34722222 ft2
60 in20.41666667 ft2
70 in20.48611111 ft2
75 in20.52083333 ft2
80 in20.55555556 ft2
90 in20.625 ft2
100 in20.69444444 ft2
120 in20.83333333 ft2
150 in21.041667 ft2
200 in21.388889 ft2
250 in21.736111 ft2
300 in22.083333 ft2
400 in22.777778 ft2
500 in23.472222 ft2
750 in25.208333 ft2
1,000 in26.944444 ft2
1,500 in210.416667 ft2
2,000 in213.888889 ft2
5,000 in234.722222 ft2
10,000 in269.444444 ft2

Questions

How many square feet are in a square inch?

0.00694444 square feet.

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

Put the value in A1 and type =A1*0.00694444, 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.