Convert Square Miles

Calculators can be used to convert measurements from one unit to another

Square miles are a measure of area. Square mile is an imperial unit of measure, and can be abbreviated as sq mi. For example 1 square mile can be written as 1 sq mi.

Square Mile Conversion Calculators

Choose an imperial or metric unit to convert square miles to.

Convert square miles to acres
1 square mile is equal to 640 acres
Convert square miles to square yards
1 square mile is equal to 3,097,600 square yards
Convert square miles to square feet
1 square mile is equal to 27,878,400 square feet
Convert square miles to square inches
1 square mile is equal to 4,014,489,599 square inches
Convert square miles to square kilometers
1 square mile is equal to 2.589988 square kilometers
Convert square miles to hectares
1 square mile is equal to 258.998811 hectares
Convert square miles to ares
1 square mile is equal to 25,900 ares
Convert square miles to square meters
1 square mile is equal to 2,589,988 square meters
Convert square miles to square centimeters
1 square mile is equal to 25,899,881,100 square centimeters
Convert square miles to square millimeters
1 square mile is equal to 2,589,988,110,000 square millimeters

We have many more area conversion tools that you might also find useful. You might also be interested in our area calculator.

Square Miles unit of measurement conversion

Square Miles Measurement Conversion Table

Common square mile values and equivalent imperial and metric area measurements
square miles acres square yards square feet square inches square kilometers hectares ares square meters square centimeters square millimeters
1 sq mi 640 ac 3,097,600 sq yd 27,878,400 sq ft 4,014,489,599 sq in 2.589988 sq km 258.998811 ha 25,900 a 2,589,988 sq m 25,899,881,100 sq cm 2,589,988,110,000 sq mm
2 sq mi 1,280 ac 6,195,200 sq yd 55,756,800 sq ft 8,028,979,199 sq in 5.179976 sq km 517.997622 ha 51,800 a 5,179,976 sq m 51,799,762,200 sq cm 5,179,976,220,000 sq mm
3 sq mi 1,920 ac 9,292,800 sq yd 83,635,200 sq ft 12,043,468,798 sq in 7.769964 sq km 776.996433 ha 77,700 a 7,769,964 sq m 77,699,643,300 sq cm 7,769,964,330,000 sq mm
4 sq mi 2,560 ac 12,390,400 sq yd 111,513,600 sq ft 16,057,958,398 sq in 10.359952 sq km 1,036 ha 103,600 a 10,359,952 sq m 103,599,524,400 sq cm 10,359,952,440,000 sq mm
5 sq mi 3,200 ac 15,488,000 sq yd 139,392,000 sq ft 20,072,447,997 sq in 12.949941 sq km 1,295 ha 129,499 a 12,949,941 sq m 129,499,405,500 sq cm 12,949,940,550,000 sq mm
6 sq mi 3,840 ac 18,585,600 sq yd 167,270,400 sq ft 24,086,937,597 sq in 15.539929 sq km 1,554 ha 155,399 a 15,539,929 sq m 155,399,286,600 sq cm 15,539,928,660,000 sq mm
7 sq mi 4,480 ac 21,683,200 sq yd 195,148,800 sq ft 28,101,427,196 sq in 18.129917 sq km 1,813 ha 181,299 a 18,129,917 sq m 181,299,167,700 sq cm 18,129,916,770,000 sq mm
8 sq mi 5,120 ac 24,780,800 sq yd 223,027,200 sq ft 32,115,916,796 sq in 20.719905 sq km 2,072 ha 207,199 a 20,719,905 sq m 207,199,048,800 sq cm 20,719,904,880,000 sq mm
9 sq mi 5,760 ac 27,878,400 sq yd 250,905,600 sq ft 36,130,406,395 sq in 23.309893 sq km 2,331 ha 233,099 a 23,309,893 sq m 233,098,929,900 sq cm 23,309,892,990,000 sq mm
10 sq mi 6,400 ac 30,976,000 sq yd 278,784,000 sq ft 40,144,895,995 sq in 25.899881 sq km 2,590 ha 258,999 a 25,899,881 sq m 258,998,811,000 sq cm 25,899,881,100,000 sq mm
11 sq mi 7,040 ac 34,073,600 sq yd 306,662,400 sq ft 44,159,385,594 sq in 28.489869 sq km 2,849 ha 284,899 a 28,489,869 sq m 284,898,692,100 sq cm 28,489,869,210,000 sq mm
12 sq mi 7,680 ac 37,171,200 sq yd 334,540,800 sq ft 48,173,875,194 sq in 31.079857 sq km 3,108 ha 310,799 a 31,079,857 sq m 310,798,573,200 sq cm 31,079,857,320,000 sq mm
13 sq mi 8,320 ac 40,268,800 sq yd 362,419,200 sq ft 52,188,364,793 sq in 33.669845 sq km 3,367 ha 336,698 a 33,669,845 sq m 336,698,454,300 sq cm 33,669,845,430,000 sq mm
14 sq mi 8,960 ac 43,366,400 sq yd 390,297,600 sq ft 56,202,854,393 sq in 36.259834 sq km 3,626 ha 362,598 a 36,259,834 sq m 362,598,335,400 sq cm 36,259,833,540,000 sq mm
15 sq mi 9,600 ac 46,464,000 sq yd 418,176,000 sq ft 60,217,343,992 sq in 38.849822 sq km 3,885 ha 388,498 a 38,849,822 sq m 388,498,216,500 sq cm 38,849,821,650,000 sq mm
16 sq mi 10,240 ac 49,561,600 sq yd 446,054,400 sq ft 64,231,833,592 sq in 41.43981 sq km 4,144 ha 414,398 a 41,439,810 sq m 414,398,097,600 sq cm 41,439,809,760,000 sq mm
17 sq mi 10,880 ac 52,659,200 sq yd 473,932,800 sq ft 68,246,323,191 sq in 44.029798 sq km 4,403 ha 440,298 a 44,029,798 sq m 440,297,978,700 sq cm 44,029,797,870,000 sq mm
18 sq mi 11,520 ac 55,756,800 sq yd 501,811,200 sq ft 72,260,812,791 sq in 46.619786 sq km 4,662 ha 466,198 a 46,619,786 sq m 466,197,859,800 sq cm 46,619,785,980,000 sq mm
19 sq mi 12,160 ac 58,854,400 sq yd 529,689,600 sq ft 76,275,302,390 sq in 49.209774 sq km 4,921 ha 492,098 a 49,209,774 sq m 492,097,740,900 sq cm 49,209,774,090,000 sq mm
20 sq mi 12,800 ac 61,952,000 sq yd 557,568,000 sq ft 80,289,791,990 sq in 51.799762 sq km 5,180 ha 517,998 a 51,799,762 sq m 517,997,622,000 sq cm 51,799,762,200,000 sq mm