Kilometer/Second to Centimeter/Second Converter

Speed Converter

18 units available

Decimals:

From

To

100,000

1 km/s = 100,000 cm/s

Formula:

cm/s = km/s × 100,000

With your value: 1 km/s = 100,000 cm/s

How big is that?

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

Urban speed limit (50 km/h) (1/72 your value)0.0139 km/s

Cheetah sprint (1/34 your value)0.0290 km/s

Motorway (110 km/h) (1/33 your value)0.0306 km/s

Airliner cruise (1/4.0 your value)0.250 km/s

Speed of sound (sea level) (1/2.9 your value)0.343 km/s

Your value1.00 km/s

Other Kilometer/Second to Centimeter/Second conversions

2 km/s to cm/s 3 km/s to cm/s 4 km/s to cm/s 5 km/s to cm/s 6 km/s to cm/s 7 km/s to cm/s 8 km/s to cm/s

Kilometer/Second to Centimeter/Second Conversion Table

Kilometer/Second (km/s)	Centimeter/Second (cm/s)
0.5	50,000
1	100,000
2	200,000
5	500,000
10	1,000,000
15	1,500,000
20	2,000,000
25	2,500,000
50	5,000,000
100	10,000,000
250	25,000,000
500	50,000,000
1000	100,000,000

Centimeter/Second to Kilometer/Second Conversion Table

Centimeter/Second (cm/s)	Kilometer/Second (km/s)
0.5	5.000000e-6
1	1.000000e-5
2	2.000000e-5
5	5.000000e-5
10	0.0001
15	0.00015
20	0.0002
25	0.00025
50	0.0005
100	0.001
250	0.0025
500	0.005
1000	0.01

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.

Kilometer/Second (km/s)

Speed

Exact conversion

Derived quantity: a defined length divided by a defined time interval.

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

Centimeter/Second (cm/s)

Speed

Exact conversion

Derived quantity: a defined length divided by a defined time interval.

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

How to Convert Kilometer/Second to Centimeter/Second

To convert from Kilometer/Second (km/s) to Centimeter/Second (cm/s), multiply the value by 100,000.

Formula: cm/s = km/s × 100,000

Reverse: km/s = cm/s × 0.00001

Step-by-Step Example

Start with your value in Kilometer/Second. For example: 5 km/s
Multiply by the conversion factor: 5 x 100,000
The result is: 500,000 cm/s

About Kilometer/Second

The kilometer/second (km/s) is a unit of speed and velocity. One kilometer/second equals 1000 metre per seconds. UnitConvertLab converts it against every other speed unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

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

About Centimeter/Second

The centimeter/second (cm/s) is a unit of speed and velocity. One centimeter/second equals 0.01 metre per seconds. UnitConvertLab converts it against every other speed unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

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

Frequently Asked Questions

How many Centimeter/Second are in 1 Kilometer/Second?

There are exactly 100,000 Centimeter/Second in 1 Kilometer/Second. This means the conversion factor from Kilometer/Second to Centimeter/Second is 100,000.

What is the formula to convert Kilometer/Second to Centimeter/Second?

The formula to convert Kilometer/Second to Centimeter/Second is: cm/s = km/s × 100,000. For example, to convert 10 Kilometer/Second to Centimeter/Second, you would multiply 10 by 100,000.

What is a Kilometer/Second?