Square Miles to Square Kilometres

Convert square miles (mi²) to square kilometres (km²) instantly — with formula and reference table.

Quick answer: 1 mi² = 2.589988 km². To convert square miles to square kilometres, multiply by mi² × 2.589988.

Converting square miles to square kilometres

This converter changes a value in square miles (mi²) into square kilometres (km²). One square mile equals 2.589988 km². One square mile equals 2.59 square kilometres. The conversion runs entirely in your browser — enter a value and the result updates instantly, in either direction.

Formula

km² = mi² × 2.589988

Example

Convert 10 mi² to km²: 10 × 2.589988 = 25.899881 km².

Square Miles to Square Kilometres conversion table

Popular square miles to square kilometres conversions

Quick answers for the mi² values people look up most often:

• 4 mi² = 10.36 km²
• 6 mi² = 15.5399 km²
• 7 mi² = 18.1299 km²
• 8 mi² = 20.7199 km²
• 9 mi² = 23.3099 km²
• 12 mi² = 31.0799 km²
• 15 mi² = 38.8498 km²
• 30 mi² = 77.6996 km²
• 40 mi² = 103.5995 km²
• 60 mi² = 155.3993 km²
• 75 mi² = 194.2491 km²
• 80 mi² = 207.199 km²
• 90 mi² = 233.0989 km²
• 150 mi² = 388.4982 km²
• 200 mi² = 517.9976 km²
• 250 mi² = 647.497 km²
• 500 mi² = 1294.9941 km²
• 1000 mi² = 2589.9881 km²

How to use this converter

1. Enter a value in the square miles (mi²) field.
2. Read the converted value in square kilometres (km²) below.
3. Type into the km² field instead to convert in reverse, or use the swap button.

Frequently asked questions

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