Convert UnitsFast, accurate unit conversions
Area

Square miles to square kilometers Converter

Convert square mile to square kilometer instantly.

Formulakm² = mi² × 2.58998811034
Sources and methodology1 mi² = 2.58998811034 km² — exactly. exactly

Quick conversion table

square milesquare kilometer
1 mi²2.58998811034 km²
10 mi²25.8998811034 km²
50 mi²129.499405517 km²
100 mi²258.998811034 km²
500 mi²1294.99405517 km²
1000 mi²2589.98811034 km²
5000 mi²12949.9405517 km²
10000 mi²25899.8811034 km²

Unit definitions

square mile (mi²)

square mile is a unit of Area. In this converter it is defined against the category base unit as 1 mi² = 2589988.11034 m².

square kilometer (km²)

square kilometer is a unit of Area. In this converter it is defined against the category base unit as 1 km² = 1000000 m².

Example

10 mi² = 25.8998811034 km²

Sources and methodology

Definitions: BIPM SI Brochure and NIST conversion guidance. Methodology.