Convert Square Inches to Square Kilometers

Enter the area in square inches below to get the value converted to square kilometers.

Results in Square Kilometers:

1 sq in = 6.4516E-10 sq km

Do you want to convert square kilometers to square inches?

How to Convert Square Inches to Square Kilometers

Calculators can be used to convert measurements from one unit to another

To convert a square inch measurement to a square kilometer measurement, multiply the area by the conversion ratio. One square inch is equal to 6.4516E-10 square kilometers, so use this simple formula to convert:

square kilometers = square inches × 6.4516E-10

The area in square kilometers is equal to the square inches multiplied by 6.4516E-10.

For example, here's how to convert 5 square inches to square kilometers using the formula above.

5 sq in = (5 × 6.4516E-10) = 3.2258E-9 sq km

Square inches and square kilometers are both units used to measure area. Keep reading to learn more about each unit of measure.

Square Inches

One square inch is equal to the area of a square with sides that are 1 inch in length.

The square inch is a US customary and imperial unit of area. A square inch is sometimes also referred to as a square in. Square inches can be abbreviated as sq in, and are also sometimes abbreviated as in². For example, 1 square inch can be written as 1 sq in or 1 in².

Square Kilometers

One square kilometer is equal to the area of a square with sides that are 1 kilometer in length.

The square kilometer, or square kilometre, is a multiple of the square meter, which is the SI derived unit for area. In the metric system, "kilo" is the prefix for 10³. A square kilometer is sometimes also referred to as a square km. Square kilometers can be abbreviated as sq km, and are also sometimes abbreviated as km². For example, 1 square kilometer can be written as 1 sq km or 1 km².

Square Inch Measurements and Equivalent Square Kilometer Conversions

Common square inch values converted to the equivalent square kilometer value
Square Inches	Square Kilometers
1 sq in	0.00000000064516 sq km
2 sq in	0.0000000012903 sq km
3 sq in	0.0000000019355 sq km
4 sq in	0.0000000025806 sq km
5 sq in	0.0000000032258 sq km
6 sq in	0.000000003871 sq km
7 sq in	0.0000000045161 sq km
8 sq in	0.0000000051613 sq km
9 sq in	0.0000000058064 sq km
10 sq in	0.0000000064516 sq km
11 sq in	0.0000000070968 sq km
12 sq in	0.0000000077419 sq km
13 sq in	0.0000000083871 sq km
14 sq in	0.0000000090322 sq km
15 sq in	0.0000000096774 sq km
16 sq in	0.000000010323 sq km
17 sq in	0.000000010968 sq km
18 sq in	0.000000011613 sq km
19 sq in	0.000000012258 sq km
20 sq in	0.000000012903 sq km
21 sq in	0.000000013548 sq km
22 sq in	0.000000014194 sq km
23 sq in	0.000000014839 sq km
24 sq in	0.000000015484 sq km
25 sq in	0.000000016129 sq km
26 sq in	0.000000016774 sq km
27 sq in	0.000000017419 sq km
28 sq in	0.000000018064 sq km
29 sq in	0.00000001871 sq km
30 sq in	0.000000019355 sq km
31 sq in	0.00000002 sq km
32 sq in	0.000000020645 sq km
33 sq in	0.00000002129 sq km
34 sq in	0.000000021935 sq km
35 sq in	0.000000022581 sq km
36 sq in	0.000000023226 sq km
37 sq in	0.000000023871 sq km
38 sq in	0.000000024516 sq km
39 sq in	0.000000025161 sq km
40 sq in	0.000000025806 sq km

More Square Inch Area Conversions

US Customary

Convert to Square Miles: 1 sq in is equal to 2.491E-10 square miles
Convert to Acres: 1 sq in is equal to 1.5942E-7 acres
Convert to Square Yards: 1 sq in is equal to 0.000772 square yards
Convert to Square Feet: 1 sq in is equal to 0.006944 square feet

SI Units

Convert to Square Meters: 1 sq in is equal to 0.000645 square meters
Convert to Square Centimeters: 1 sq in is equal to 6.4516 square centimeters
Convert to Square Millimeters: 1 sq in is equal to 645.16 square millimeters

Other Metric Units