Area Calculator

How big is 1 Square Miles? What is 1 Square Miles in Square Kilometers? This area calculator will allow you to easily convert 1 sq mi to sq km.

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1 Square Miles = 2.58998811 Square Kilometers

1 Square Miles is equal to 2.58998811 Square Kilometers

Square Miles

(Abbreviations: sq mi, mi²,mi^2)

A square mile is equal to the area of a square with sides of one mile (mi) in length. Square miles are used to measure large land areas, such as the size of states, counties, or national parks.

Square Kilometers

(Abbreviations: sq km, km², km^2)

A square kilometer is equal to the area of a square with sides of one kilometer (km) in length. Square kilometers are used to measure large areas, such as the size of cities, countries, or even continents.

Square Miles to Square Kilometers Conversions

Square Miles	Square Kilometers
1	2.58998811
2	5.17997622
3	7.76996433
4	10.35995244
5	12.94994055
6	15.53992866
7	18.12991677
8	20.71990488
9	23.30989299
10	25.8998811
11	28.48986921
12	31.07985732
13	33.66984543
14	36.25983354
15	38.84982165
16	41.43980976
17	44.02979787
18	46.61978598
19	49.20977409
20	51.7997622
21	54.38975031
22	56.97973842
23	59.56972653
24	62.15971464
25	64.74970275
26	67.33969086
27	69.92967897
28	72.51966708
29	75.10965519
30	77.6996433

Square Miles	Square Kilometers
31	80.28963141
32	82.87961952
33	85.46960763
34	88.05959574
35	90.64958385
36	93.23957196
37	95.82956007
38	98.41954818
39	101.00953629
40	103.5995244
41	106.18951251
42	108.77950062
43	111.36948873
44	113.95947684
45	116.54946495
46	119.13945306
47	121.72944117
48	124.31942928
49	126.90941739
50	129.4994055
51	132.08939361
52	134.67938172
53	137.26936983
54	139.85935794
55	142.44934605
56	145.03933416
57	147.62932227
58	150.21931038
59	152.80929849
60	155.3992866

Most Frequently Used Area Unit Conversions:

Metric:

Square Meters (m²) to Square Centimeters (cm²)
Square Meters (m²) to Square Millimeters (mm²)
Square Kilometers (km²) to Hectares (ha)
Hectares (ha) to Square Meters (m²)
Square Meters (m²) to Square Decimeters (dm²)

Imperial/US Customary:

Square Feet (ft²) to Square Inches (in²)
Square Yards (yd²) to Square Feet (ft²)
Acres (ac) to Square Feet (ft²)
Acres (ac) to Square Yards (yd²)
Square Miles (mi²) to Acres (ac)

Common Metric-Imperial Conversions:

Square Meters (m²) to Square Feet (ft²)
Square Feet (ft²) to Square Meters (m²)
Acres (ac) to Hectares (ha)
Hectares (ha) to Acres (ac)

Less Common but Useful:

Square Miles (mi²) to Square Kilometers (km²)
Square Kilometers (km²) to Square Miles (mi²)
Square Yards (yd²) to Square Meters (m²)