How Big is 21 Acres?

Dimensions of 21 acres. Type into the calculator to update.
acres
feet
Dimensions
Square Feet
Square Miles
Hectares
Square Meters
What's the size of 21 acres? How big are 21 acres? Width and length of a rectangular area. An acre is 43,560 square feet.

1 square mile = 640 acres
A quarter square mile = 160 acres
A standard residential lot = .2 acres, often 132ft x 66ft

Type the acreage and one side in feet. The calculator will show the dimensions.

How to Calculate
To calculate the dimenions of 21 acres, you need to know one side of the dimenions. This formula is used for rectangular areas only. For example, if you have 21 acres, you can convert 21 acres to 914760 square feet. Let's say that one side is 828 feet. You can then divide the square footage by the known side.
21 acres x 43,560 / 828 feet = 1104.78 ft
To calculate acreage when you know the dimensions, use the following formula. Take one side (in feet) of the area and multiply it by the other side (in feet). This will give you the square footage. Since there are 43,560 square feet in an acre, you then divide the square footage by 43,560.
(Side 1 in Feet x Side 2 in Feet) / 43,560 = acres
How to Use
I use this calculator to get a quick estimate of the dimensions for a specific acreage, usually for land size but also state parks, lakes, and other properties that use acreage as a measurement. Type the number of acres into the calculator and one side. You'll get a quick idea of the dimensions of 21 acres.
Dimenions in Feet of Square Acreage Based on Acres
Acres Approximate Dimensions
22 979 ft x 979 ft
23 1,001 ft x 1,001 ft
24 1,022 ft x 1,022 ft
25 1,044 ft x 1,044 ft
26 1,064 ft x 1,064 ft
27 1,084 ft x 1,084 ft
28 1,104 ft x 1,104 ft
29 1,124 ft x 1,124 ft
30 1,143 ft x 1,143 ft
31 1,162 ft x 1,162 ft
32 1,181 ft x 1,181 ft
33 1,199 ft x 1,199 ft
34 1,217 ft x 1,217 ft
35 1,235 ft x 1,235 ft
36 1,252 ft x 1,252 ft
37 1,270 ft x 1,270 ft
38 1,287 ft x 1,287 ft
39 1,303 ft x 1,303 ft
40 1,320 ft x 1,320 ft
41 1,336 ft x 1,336 ft
42 1,353 ft x 1,353 ft
43 1,369 ft x 1,369 ft
44 1,384 ft x 1,384 ft
45 1,400 ft x 1,400 ft
46 1,416 ft x 1,416 ft
Acres Approximate Dimensions
47 1,431 ft x 1,431 ft
48 1,446 ft x 1,446 ft
49 1,461 ft x 1,461 ft
50 1,476 ft x 1,476 ft
51 1,490 ft x 1,490 ft
52 1,505 ft x 1,505 ft
53 1,519 ft x 1,519 ft
54 1,534 ft x 1,534 ft
55 1,548 ft x 1,548 ft
56 1,562 ft x 1,562 ft
57 1,576 ft x 1,576 ft
58 1,589 ft x 1,589 ft
59 1,603 ft x 1,603 ft
60 1,617 ft x 1,617 ft
61 1,630 ft x 1,630 ft
62 1,643 ft x 1,643 ft
63 1,657 ft x 1,657 ft
64 1,670 ft x 1,670 ft
65 1,683 ft x 1,683 ft
66 1,696 ft x 1,696 ft
67 1,708 ft x 1,708 ft
68 1,721 ft x 1,721 ft
69 1,734 ft x 1,734 ft
70 1,746 ft x 1,746 ft
71 1,759 ft x 1,759 ft
Acres Approximate Dimensions
121 2,296 ft x 2,296 ft
126 2,343 ft x 2,343 ft
131 2,389 ft x 2,389 ft
136 2,434 ft x 2,434 ft
141 2,478 ft x 2,478 ft
146 2,522 ft x 2,522 ft
151 2,565 ft x 2,565 ft
156 2,607 ft x 2,607 ft
161 2,648 ft x 2,648 ft
166 2,689 ft x 2,689 ft
171 2,729 ft x 2,729 ft
176 2,769 ft x 2,769 ft
181 2,808 ft x 2,808 ft
186 2,846 ft x 2,846 ft
191 2,884 ft x 2,884 ft
196 2,922 ft x 2,922 ft
201 2,959 ft x 2,959 ft
206 2,996 ft x 2,996 ft
211 3,032 ft x 3,032 ft
216 3,067 ft x 3,067 ft
221 3,103 ft x 3,103 ft
Acres Approximate Dimensions
21.01 acres 956.66 ft x 956.66 ft
21.02 acres 956.89 ft x 956.89 ft
21.03 acres 957.11 ft x 957.11 ft
21.04 acres 957.34 ft x 957.34 ft
21.05 acres 957.57 ft x 957.57 ft
21.06 acres 957.80 ft x 957.80 ft
21.07 acres 958.02 ft x 958.02 ft
21.08 acres 958.25 ft x 958.25 ft
21.09 acres 958.48 ft x 958.48 ft
21.1 acres 958.71 ft x 958.71 ft
21.11 acres 958.93 ft x 958.93 ft
21.12 acres 959.16 ft x 959.16 ft
21.13 acres 959.39 ft x 959.39 ft
21.14 acres 959.61 ft x 959.61 ft
21.15 acres 959.84 ft x 959.84 ft
21.16 acres 960.07 ft x 960.07 ft
21.17 acres 960.29 ft x 960.29 ft
21.18 acres 960.52 ft x 960.52 ft
21.19 acres 960.75 ft x 960.75 ft
21.2 acres 960.97 ft x 960.97 ft
21.21 acres 961.20 ft x 961.20 ft
21.22 acres 961.43 ft x 961.43 ft
21.23 acres 961.65 ft x 961.65 ft
21.24 acres 961.88 ft x 961.88 ft
21.25 acres 962.11 ft x 962.11 ft
21.26 acres 962.33 ft x 962.33 ft
21.27 acres 962.56 ft x 962.56 ft
21.28 acres 962.79 ft x 962.79 ft
21.29 acres 963.01 ft x 963.01 ft
21.3 acres 963.24 ft x 963.24 ft
21.31 acres 963.46 ft x 963.46 ft
21.32 acres 963.69 ft x 963.69 ft
21.33 acres 963.92 ft x 963.92 ft
21.34 acres 964.14 ft x 964.14 ft
21.35 acres 964.37 ft x 964.37 ft
21.36 acres 964.59 ft x 964.59 ft
21.37 acres 964.82 ft x 964.82 ft
21.38 acres 965.05 ft x 965.05 ft
21.39 acres 965.27 ft x 965.27 ft
21.4 acres 965.50 ft x 965.50 ft
21.41 acres 965.72 ft x 965.72 ft
21.42 acres 965.95 ft x 965.95 ft
21.43 acres 966.17 ft x 966.17 ft
21.44 acres 966.40 ft x 966.40 ft
21.45 acres 966.62 ft x 966.62 ft
21.46 acres 966.85 ft x 966.85 ft
21.47 acres 967.07 ft x 967.07 ft
21.48 acres 967.30 ft x 967.30 ft
21.49 acres 967.52 ft x 967.52 ft
21.5 acres 967.75 ft x 967.75 ft
Acres Approximate Dimensions
21.51 acres 967.97 ft x 967.97 ft
21.52 acres 968.20 ft x 968.20 ft
21.53 acres 968.42 ft x 968.42 ft
21.54 acres 968.65 ft x 968.65 ft
21.55 acres 968.87 ft x 968.87 ft
21.56 acres 969.10 ft x 969.10 ft
21.57 acres 969.32 ft x 969.32 ft
21.58 acres 969.55 ft x 969.55 ft
21.59 acres 969.77 ft x 969.77 ft
21.6 acres 970.00 ft x 970.00 ft
21.61 acres 970.22 ft x 970.22 ft
21.62 acres 970.45 ft x 970.45 ft
21.63 acres 970.67 ft x 970.67 ft
21.64 acres 970.90 ft x 970.90 ft
21.65 acres 971.12 ft x 971.12 ft
21.66 acres 971.34 ft x 971.34 ft
21.67 acres 971.57 ft x 971.57 ft
21.68 acres 971.79 ft x 971.79 ft
21.69 acres 972.02 ft x 972.02 ft
21.7 acres 972.24 ft x 972.24 ft
21.71 acres 972.46 ft x 972.46 ft
21.72 acres 972.69 ft x 972.69 ft
21.73 acres 972.91 ft x 972.91 ft
21.74 acres 973.14 ft x 973.14 ft
21.75 acres 973.36 ft x 973.36 ft
21.76 acres 973.58 ft x 973.58 ft
21.77 acres 973.81 ft x 973.81 ft
21.78 acres 974.03 ft x 974.03 ft
21.79 acres 974.25 ft x 974.25 ft
21.8 acres 974.48 ft x 974.48 ft
21.81 acres 974.70 ft x 974.70 ft
21.82 acres 974.93 ft x 974.93 ft
21.83 acres 975.15 ft x 975.15 ft
21.84 acres 975.37 ft x 975.37 ft
21.85 acres 975.60 ft x 975.60 ft
21.86 acres 975.82 ft x 975.82 ft
21.87 acres 976.04 ft x 976.04 ft
21.88 acres 976.26 ft x 976.26 ft
21.89 acres 976.49 ft x 976.49 ft
21.9 acres 976.71 ft x 976.71 ft
21.91 acres 976.93 ft x 976.93 ft
21.92 acres 977.16 ft x 977.16 ft
21.93 acres 977.38 ft x 977.38 ft
21.94 acres 977.60 ft x 977.60 ft
21.95 acres 977.83 ft x 977.83 ft
21.96 acres 978.05 ft x 978.05 ft
21.97 acres 978.27 ft x 978.27 ft
21.98 acres 978.49 ft x 978.49 ft
21.99 acres 978.72 ft x 978.72 ft
22 acres 978.94 ft x 978.94 ft