Area-Converter.com: a service dedicated to area units and their calculations. Guides, calculators and articles about field area units.
Converting square miles to square kilometers is a clean one-step: 1 sq mi = 2.58999 sq km.
Multiply the area in sq mi by 2.58999 to get sq km - to go back, divide by this factor.
A square mile is a large imperial unit of area, written sq mi, defined as the area of a square one mile on each side.
It's the go-to scale for mapping cities, counties, and reserves because it summarizes big spaces clearly. Anchor this: 1 sq mi = 640 acres = 27,878,400 sq ft ≈ 2.58999 sq km.
Planners use it to compare density, model growth, and report land use. Because it scales cleanly to acres and kilometers, it bridges U.S. customary and metric data with minimal conversion friction.
A square kilometer is the metric workhorse for large areas, written sq km, defined by a square one kilometer on a side.
Perfect for mapping cities, districts, and habitats. Anchor these facts: 1 sq km = 1,000,000 sqm = 100 hectares ≈ 0.386102 sq mi.
Its clean scaling makes density, land-use planning, and cross-system conversions clear, fast, and consistent in science, policy, and everyday geography.
| Unit | 1 Square Mile |
|---|---|
| Square Feet | 27 878 432,34 sqft |
| Square Meter | 2 589 990 sqm |
| Square Centimeters | 25 899 900 000 sqcm |
| Square Yards | 3 097 603,59 sqyd |
| Square Inch | 4 014 492 528,98 sqin |
| Square kilometers | 2,58 sqkm |
| Acres | 640 acres |
| Hectares | 258,99 ha |
| Cent | 64000 cent |
| Square Mile | Square Kilometers |
|---|---|
| 0,001 sq mile | 0,002590 sq km |
| 0,01 sq mile | 0,025900 sq km |
| 0,1 sq mile | 0,258999 sq km |
| 0,2 sq mile | 0,517998 sq km |
| 0,3 sq mile | 0,776996 sq km |
| 0,4 sq mile | 1,035995 sq km |
| 0,5 sq mile | 1,294994 sq km |
| 1 sq mile | 2,589988 sq km |
| 2 sq mile | 5,179976 sq km |
| 3 sq mile | 7,769964 sq km |
| 4 sq mile | 10,359952 sq km |
| 5 sq mile | 12,949941 sq km |
| 6 sq mile | 15,539929 sq km |
| 7 sq mile | 18,129917 sq km |
| 8 sq mile | 20,719905 sq km |
| 9 sq mile | 23,309893 sq km |
| 10 sq mile | 25,899881 sq km |
| 15 sq mile | 38,849822 sq km |
| 20 sq mile | 51,799762 sq km |
| 50 sq mile | 129,499406 sq km |
Area-Converter.com: a service dedicated to area units and their calculations. Guides, calculators and articles about field area units.