Convert Square Mile to Square Kilometer
2.59
≈ 2 19/32 km²
Use the conversion factor 1 mi² = 2.59 km². To convert Square Mile to Square Kilometer, multiply the input value by 2.59.
Conversion Formula
km² = mi² × 2.59
Reverse: mi² = km² × 0.3861
Conversion Examples
1 mi² × 2.59 =
2.59 km²
1 Square Miles = 2.59 Square Kilometers
5 mi² × 2.59 =
12.95 km²
5 Square Miles = 12.95 Square Kilometers
10 mi² × 2.59 =
25.9 km²
10 Square Miles = 25.9 Square Kilometers
25 mi² × 2.59 =
64.75 km²
25 Square Miles = 64.75 Square Kilometers
50 mi² × 2.59 =
129.5 km²
50 Square Miles = 129.5 Square Kilometers
100 mi² × 2.59 =
259 km²
100 Square Miles = 259 Square Kilometers
Square Mile to Square Kilometer Table
mi² =—km²
| Square Mile (mi²) | Square Kilometer (km²) | Fraction |
|---|---|---|
| 1 | 2.59 | 2 19/32 |
| 2 | 5.18 | 5 3/16 |
| 3 | 7.77 | 7 49/64 |
| 4 | 10.36 | 10 23/64 |
| 5 | 12.95 | 12 61/64 |
| 6 | 15.54 | 15 35/64 |
| 7 | 18.13 | 18 1/8 |
| 8 | 20.72 | 20 23/32 |
| 9 | 23.31 | 23 5/16 |
| 10 | 25.9 | 25 29/32 |
| 11 | 28.49 | 28 31/64 |
| 12 | 31.08 | 31 5/64 |
| 13 | 33.67 | 33 43/64 |
| 14 | 36.26 | 36 17/64 |
| 15 | 38.85 | 38 27/32 |
| 16 | 41.44 | 41 7/16 |
| 17 | 44.03 | 44 1/32 |
| 18 | 46.62 | 46 5/8 |
| 19 | 49.21 | 49 13/64 |
| 20 | 51.8 | 51 51/64 |
Unit Definitions
What is a Square Mile (mi²)?
ImperialUnited States, United Kingdom
Square Mile (mi²) is one of the two units used in this conversion. Open its dedicated unit page for the reviewed definition and references.
Learn more about Square MileWhat is a Square Kilometer (km²)?
Metric (SI)Worldwide
Square Kilometer (km²) is one of the two units used in this conversion. Open its dedicated unit page for the reviewed definition and references.
Learn more about Square KilometerFrequently Asked Questions
How do I convert Square Mile to Square Kilometer?
Multiply the value in mi² by 2.59. The formula is km² = mi² × 2.59.
How many Square Kilometer are in 1 Square Mile?
One Square Mile equals 2.59 km².
What is 10 mi² in km²?
10 mi² equals 25.9 km².
How do I convert Square Kilometer back to Square Mile?
Use the reverse factor: 1 km² = 0.3861003861 mi².