Convert 21 Acres to Square Kilometers

How big is 21 acres? What is 21 acres in square kilometers? 21 acres to sq km conversion.
Amount
From
To
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21 Acres ≈
0.084983985 Square Kilometers
result rounded
Decimal places
Result in Plain English
21 acres is equal to about 0.0850 square kilometers.
To a Percentage
21 acres ≈ 8.50% of a square kilometer.
In Scientific Notation
21 acres
= 2.1 x 101 acres
≈ 8.4984 x 10-2 square kilometers
Acres
An acre is a unit of area equal to 1/640th of a square mile. It is about the size of an American football field.
Abbreviation: ac
Square Kilometers
A square kilometer, or square kilometre, is a unit of area. It is the size of a square that is one kilometer on a side. It is 1 million square meters, 100 hectares, about 247 acres, or about 0.386 square miles.
Common abbreviations: sq km, km², km^2
Dimensions of 21 Acres
How big on a side is 21 acres?
The dimensions will vary depending on the shape. If the area is squared-shaped, then the length of each side will be:
about 0.29152 kilometers
Acres to Square Kilometers Conversions
results may be rounded
acres sq km
21.00 0.084984
21.01 0.085024
21.02 0.085065
21.03 0.085105
21.04 0.085146
21.05 0.085186
21.06 0.085227
21.07 0.085267
21.08 0.085308
21.09 0.085348
21.10 0.085389
21.11 0.085429
21.12 0.085470
21.13 0.085510
21.14 0.085551
21.15 0.085591
21.16 0.085631
21.17 0.085672
21.18 0.085712
21.19 0.085753
21.20 0.085793
21.21 0.085834
21.22 0.085874
21.23 0.085915
21.24 0.085955
21.25 0.085996
21.26 0.086036
21.27 0.086077
21.28 0.086117
21.29 0.086158
21.30 0.086198
21.31 0.086239
21.32 0.086279
21.33 0.086319
acres sq km
21.34 0.086360
21.35 0.086400
21.36 0.086441
21.37 0.086481
21.38 0.086522
21.39 0.086562
21.40 0.086603
21.41 0.086643
21.42 0.086684
21.43 0.086724
21.44 0.086765
21.45 0.086805
21.46 0.086846
21.47 0.086886
21.48 0.086926
21.49 0.086967
21.50 0.087007
21.51 0.087048
21.52 0.087088
21.53 0.087129
21.54 0.087169
21.55 0.087210
21.56 0.087250
21.57 0.087291
21.58 0.087331
21.59 0.087372
21.60 0.087412
21.61 0.087453
21.62 0.087493
21.63 0.087534
21.64 0.087574
21.65 0.087614
21.66 0.087655
21.67 0.087695
acres sq km
21.68 0.087736
21.69 0.087776
21.70 0.087817
21.71 0.087857
21.72 0.087898
21.73 0.087938
21.74 0.087979
21.75 0.088019
21.76 0.088060
21.77 0.088100
21.78 0.088141
21.79 0.088181
21.80 0.088221
21.81 0.088262
21.82 0.088302
21.83 0.088343
21.84 0.088383
21.85 0.088424
21.86 0.088464
21.87 0.088505
21.88 0.088545
21.89 0.088586
21.90 0.088626
21.91 0.088667
21.92 0.088707
21.93 0.088748
21.94 0.088788
21.95 0.088828
21.96 0.088869
21.97 0.088909
21.98 0.088950
21.99 0.088990
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