/convert/square-kilometers-to-square-miles/ Convert sq km to sq miles instantly. Enter any value and get the result. Includes a conversion table and the exact formula. article Sq Km to Sq Miles Converter — 247QuickTools ,{ "@context": "https://schema.org", "@type": "SpeakableSpecification", "cssSelector": [".tool-intro", ".info-gain-section"] }
📐 Area

Sq Km to Sq Miles Converter

Convert sq km to sq miles instantly. Enter any value and get the result. Includes a conversion table and the exact formula.

Quick answer: To convert sq km to sq miles, multiply by 0.386102. For example, 1 sq km = 0.386102 sq miles. Use the calculator below for any value.
sq km to sq miles
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Common conversions
Sq Km Sq Miles
Formula:

How to convert sq km to sq miles

1

Enter your value

Type the number of sq km you want to convert into the left box. The result in sq miles appears instantly in the right box. You can also type into the right box to convert in the other direction.

2

Use the swap button

Click the ⇄ Swap button to reverse the conversion — Sq Miles to Sq Km. Your current value carries across so you don't have to re-enter anything.

3

About Sq Km and Sq Miles

sq km and sq miles are both units of area. Use this converter to switch between them instantly.

💡 Did you know?

1 km² = 0.386 sq miles. Geographic references: Greater London = 1,572 km² = 607 sq miles. Central London (within the Circle Line) ≈ 20 km² = 7.7 sq miles. Manhattan = 87.5 km² = 33.8 sq miles. Scotland = 78,772 km² = 30,414 sq miles.

📊 Common conversions at a glance
Sq Km Sq Miles
1 0.3861
2 0.7722
5 1.931
10 3.861
50 19.31
100 38.61
Reviewed for 2026. Sq Km ↔ Sq Miles conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.