Square Kilometer to Square Centimeter Converter

Area Converter

20 units available

Decimals:

From

To

10,000,000,000

1 km² = 10,000,000,000 cm²

Formula:

cm² = km² × 1.000000e+10

With your value: 1 km² = 10,000,000,000 cm²

How big is that?

Everyday references on a logarithmic scale, all expressed in square kilometer so you can sanity-check the result.

Parking space (1/8.0e+4 your value)0.0000125 km²

Tennis court (1/3.8e+3 your value)0.000261 km²

Football pitch (1/1.4e+2 your value)0.00714 km²

Hectare (1/1.0e+2 your value)0.0100 km²

Your value1.00 km²

Central Park (3.4× your value)3.41 km²

Other Square Kilometer to Square Centimeter conversions

2 km² to cm² 3 km² to cm² 4 km² to cm² 5 km² to cm² 6 km² to cm² 7 km² to cm² 8 km² to cm²

Square Kilometer to Square Centimeter Conversion Table

Square Kilometer (km²)	Square Centimeter (cm²)
0.5	5,000,000,000
1	10,000,000,000
2	20,000,000,000
5	50,000,000,000
10	100,000,000,000
15	150,000,000,000
20	200,000,000,000
25	250,000,000,000
50	500,000,000,000
100	1.000000e+12
250	2.500000e+12
500	5.000000e+12
1000	1.000000e+13

Square Centimeter to Square Kilometer Conversion Table

Square Centimeter (cm²)	Square Kilometer (km²)
0.5	5.000000e-11
1	1.000000e-10
2	2.000000e-10
5	5.000000e-10
10	1.000000e-9
15	1.500000e-9
20	2.000000e-9
25	2.500000e-9
50	5.000000e-9
100	1.000000e-8
250	2.500000e-8
500	5.000000e-8
1000	1.000000e-7

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Square Kilometer (km²)

Area

Exact conversion

Derived from the square metre via the length definitions above.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Square Centimeter (cm²)

Area

Exact conversion

Derived from the square metre via the length definitions above.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Square Kilometer to Square Centimeter

To convert from Square Kilometer (km²) to Square Centimeter (cm²), multiply the value by 10,000,000,000.

Formula: cm² = km² × 1.000000e+10

Reverse: km² = cm² × 1.000000e-10

Step-by-Step Example

Start with your value in Square Kilometer. For example: 5 km²
Multiply by the conversion factor: 5 x 10,000,000,000
The result is: 50,000,000,000 cm²

About Square Kilometer

The square kilometer (km²) is a unit of area. One square kilometer equals 1.000000 × 10^+6 square metres. UnitConvertLab converts it against every other area unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: area calculations, engineering and science, education.

About Square Centimeter

The square centimeter (cm²) is a unit of area. One square centimeter equals 0.0001 square metres. UnitConvertLab converts it against every other area unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: area calculations, engineering and science, education.

Frequently Asked Questions

How many Square Centimeter are in 1 Square Kilometer?

There are exactly 10,000,000,000 Square Centimeter in 1 Square Kilometer. This means the conversion factor from Square Kilometer to Square Centimeter is 10,000,000,000.

What is the formula to convert Square Kilometer to Square Centimeter?

The formula to convert Square Kilometer to Square Centimeter is: cm² = km² × 1.000000e+10. For example, to convert 10 Square Kilometer to Square Centimeter, you would multiply 10 by 10,000,000,000.

What is a Square Kilometer?