Square Kilometers to Square Miles

Convert square kilometers (km²) to square miles (mi²) with formulas, examples, and conversion tables.

km²
mi²
1 km² = 0.3861 mi²
Full precision:0.38610216 mi²
Step-by-Step Solution

To convert 1 square kilometers to square miles, we divide by 2.59 because one square mile equals exactly 2.59 square kilometers.

1 square mile = 2.59 square kilometers

Since there are 2.59 square kilometers in every square mile, we divide our value by this factor:

1 ÷ 2.59 = 0.3861 square miles

So 1 square kilometers = 0.3861 square miles.

Quick check: 0.3861 × 2.59 = 1 square kilometers

How to Convert Square Kilometers to Square Miles

To convert square kilometers to square miles, divide the value by 2.59.

The Formula

Square Miles = Square Kilometers ÷ 2.59

Key Fact

1 square mile = 2.59 square kilometers

Tip: To convert square miles back to square kilometers, multiply by 2.59.

Example Conversions

Example 1: 1 km² = 0.3861 mi²
1 ÷ 2.59 = 0.3861
Example 2: 5 km² = 1.9305 mi²
5 ÷ 2.59 = 1.9305
Example 3: 10 km² = 3.861 mi²
10 ÷ 2.59 = 3.861

Square Kilometers to Square Miles Table

Square KilometersSquare Miles
1 km²0.3861 mi²
2 km²0.7722 mi²
5 km²1.9305 mi²
10 km²3.861 mi²
20 km²7.722 mi²
25 km²9.6526 mi²
50 km²19.3051 mi²
100 km²38.6102 mi²
250 km²96.5255 mi²
500 km²193.051 mi²
1000 km²386.102 mi²

1 Square Kilometer in Other Units

Unit1 km² =
Square Kilometers to Hectares100 ha
Square Kilometers to Square Meters1000000
Square Kilometers to Square Centimeters1e+10 cm²
Square Kilometers to Square Millimeters1e+12 mm²
Square Kilometers to Square Miles0.386102 mi²
Square Kilometers to Acres247.105 ac
Square Kilometers to Square Yards1195990.56 yd²
Square Kilometers to Square Feet10763915.05 ft²
Square Kilometers to Square Inches1550003100.01 in²
Square Kilometers to Ares10000 a
Square Kilometers to Barns1e+34 b

Related Conversions