# Convert 1 Square Mile to Acres

How big is 1 square mile? What is 1 square mile in acres? 1 sq mi to acres conversion.
1 Square Mile =
640 Acres
(exact result)
A square mile is a unit of area. It is the size of a square that is one mile on a side. It is equal to 640 acres or approximately 2.59 square kilometers.
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.
Square Miles to Acres Conversions
(some results rounded)
sq mi acres
1.00 640
1.01 646.4
1.02 652.8
1.03 659.2
1.04 665.6
1.05 672
1.06 678.4
1.07 684.8
1.08 691.2
1.09 697.6
1.10 704
1.11 710.4
1.12 716.8
1.13 723.2
1.14 729.6
1.15 736
1.16 742.4
1.17 748.8
1.18 755.2
1.19 761.6
1.20 768
1.21 774.4
1.22 780.8
1.23 787.2
1.24 793.6
sq mi acres
1.25 800
1.26 806.4
1.27 812.8
1.28 819.2
1.29 825.6
1.30 832
1.31 838.4
1.32 844.8
1.33 851.2
1.34 857.6
1.35 864
1.36 870.4
1.37 876.8
1.38 883.2
1.39 889.6
1.40 896
1.41 902.4
1.42 908.8
1.43 915.2
1.44 921.6
1.45 928
1.46 934.4
1.47 940.8
1.48 947.2
1.49 953.6
sq mi acres
1.50 960
1.51 966.4
1.52 972.8
1.53 979.2
1.54 985.6
1.55 992
1.56 998.4
1.57 1,004.8
1.58 1,011.2
1.59 1,017.6
1.60 1,024
1.61 1,030.4
1.62 1,036.8
1.63 1,043.2
1.64 1,049.6
1.65 1,056
1.66 1,062.4
1.67 1,068.8
1.68 1,075.2
1.69 1,081.6
1.70 1,088
1.71 1,094.4
1.72 1,100.8
1.73 1,107.2
1.74 1,113.6
sq mi acres
1.75 1,120
1.76 1,126.4
1.77 1,132.8
1.78 1,139.2
1.79 1,145.6
1.80 1,152
1.81 1,158.4
1.82 1,164.8
1.83 1,171.2
1.84 1,177.6
1.85 1,184
1.86 1,190.4
1.87 1,196.8
1.88 1,203.2
1.89 1,209.6
1.90 1,216
1.91 1,222.4
1.92 1,228.8
1.93 1,235.2
1.94 1,241.6
1.95 1,248
1.96 1,254.4
1.97 1,260.8
1.98 1,267.2
1.99 1,273.6