Square mile to Square kilometer

1 mi² = 2.5899881 km²

Value

From

Precision & format

Significant figures

Notation

1 mi² equals

2.58998811km²

All 15 units

Square meterm²
2,589,988.11
Square kilometerkm²
2.58998811
Square centimetercm²
25,899,881,100
Square millimetermm²
2,589,988,110,000
Hectareha
258.998811
Area
25,899.8811
Square milemi²
1
Square yardyd²
3,097,600
Square footft²
27,878,400
Square inchin²
4,014,489,600
Acreac
640
Roodrood
¼ acre
2,560
Sectionsection
1 mi²
1
Townshiptwp
36 mi²
0.02777777778
Barnb
nuclear cross-section
2.58998811 × 10³⁴

Square mile to Square kilometer table

Common Square mile values converted to Square kilometer
Square mile (mi²)	Square kilometer (km²)
1	2.5899881
2	5.1799762
5	12.949941
10	25.899881
20	51.799762
50	129.49941
100	258.99881
250	647.49703
500	1,294.9941
1,000	2,589.9881

How the conversion works

Multiply the square mile figure by 2.58998811 to get square kilometer. Every factor on this site is anchored to the SI base unit for area, so the same number is used everywhere it appears.

Going the other way, 1 km² = 0.38610216 mi² — see square kilometer to square mile.

See all 15 area units →