What is 5 kilometers per second in centimeters per second?

5 kilometers per second (5 km/s) is equal to 500,000 centimeters per second (500,000 cm/s).

Which is larger, 1 kilometers per second (km/s) or 1 centimeters per second (cm/s)?

One kilometers per second (km/s) is larger than one centimeters per second (cm/s). Specifically, 1 km/s contains 100,000 cm/s, whereas 1 cm/s is 0.00001 km/s.

How do I convert back from centimeters per second (cm/s) to kilometers per second (km/s)?

To reverse the calculation from cm/s to km/s, multiply your centimeters per second value by the inverse factor 0.00001 (or divide by 100,000). You can also click the Swap button in the tool above to flip directions in one click.

How many decimal places should I round km/s to cm/s results to?

For everyday comparisons and quick estimates, rounding to 2 decimal places is usually sufficient (for example, 5 km/s ≈ 500,000.00 cm/s). For engineering, laboratory, or machining specifications, select 4 or 6 decimals—or Scientific (10ⁿ) mode—in the calculator toolbar above.

Kilometers per Second to Centimeters per Second Converter

Enter the speed in kilometers per second below to convert it to centimeters per second.

Centimeters per Second to Kilometers per Second (cm/s → km/s)

Convert Kilometers per Second to Centimeters per Second

Enter a value in kilometers per second (km/s) to convert to centimeters per second (cm/s).

Value (km/s)

From

Result

•

500,000centimeters per second

5 km/s = 500,000 cm/s

Result updates automatically

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Equivalent Measurements Across UnitsFor 5 km/s

Knots9,719.22246 kn

Suggested Conversions

Reference:NIST SP 811 (NIST SP 811 App. B.9 (Velocity))

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Kilometers per Second to Centimeters per Second Conversion Table

Table showing various kilometers per second measurements converted to centimeters per second. Click any preset value or arrow to load it into the converter.

Kilometers per Second (km/s)	Centimeters per Second (cm/s)
0.0000001 km/s	0.01 cm/s
0.0000002 km/s	0.02 cm/s
0.0000003 km/s	0.03 cm/s
0.0000004 km/s	0.04 cm/s
0.0000005 km/s	0.05 cm/s
0.0000006 km/s	0.06 cm/s
0.0000007 km/s	0.07 cm/s
0.0000008 km/s	0.08 cm/s
0.0000009 km/s	0.09 cm/s
0.00000001 km/s	0.001 cm/s

How to Convert Kilometers per Second to Centimeters per Second

To convert kilometers per second to centimeters per second, multiply the speed by the following conversion ratio: 100,000 centimeters per second/kilometers per second.

Since one kilometers per second is equal to 100,000 centimeters per second, you can use this simple formula to convert:

centimeters per second = kilometers per second × 100,000

The speed in centimeters per second is equal to the speed in kilometers per second multiplied by 100,000.

For example, here's how to convert 5 kilometers per second to centimeters per second using the formula above.

centimeters per second = (5 km/s × 100,000) = 500,000 cm/s

How Many Centimeters per Second Are in a Kilometers per Second?

There are 100,000 centimeters per second in a kilometers per second, which is why we use this value in the formula above.

1 km/s = 100,000 cm/s|1 cm/s = 0.00001 km/s

Our kilometers per second to centimeters per second calculator automatically converts your speed measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.

Kilometers per Second and centimeters per second are both units used to measure speed. Keep reading to learn more about each unit.

What Is a Kilometers per Second?

A kilometers per second is a unit of speed equal to 1,000 meters per second (m/s), the base unit for speed. Astrophysics & orbital velocity unit equal to 1,000 m/s. [1]

The kilometers per second is classified as an International System of Units (SI) unit of speed. Kilometers per Second can be abbreviated as km/s; for example, 1 kilometers per second can be written as 1 km/s.

In the metric system, "kilo" is the standard SI prefix for thousands, or 10³. This makes the kilometers per second (km/s) a convenient decimal multiple of the meters per second (m/s).

In practice, kilometers per second (km/s) are widely used across large-scale industrial, bulk, and macro-level speed specifications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.

Learn more about kilometers per second in our Speed Converter.

What Is a Centimeters per Second?

A centimeters per second is a unit of speed equal to 1/100 of a meters per second (0.01 m/s). CGS velocity unit equal to 0.01 m/s. [2]

The centimeters per second is classified as a metric and SI-compatible unit of speed. Centimeters per Second can be abbreviated as cm/s; for example, 1 centimeters per second can be written as 1 cm/s.

In the metric system, "centi" is the standard SI prefix for hundredths, or 10⁻². This makes the centimeters per second (cm/s) a convenient decimal multiple of the meters per second (m/s).

In practice, centimeters per second (cm/s) are widely used across fine-tolerance laboratory, analytical, and micro-scale speed measurements within SI metric workflows, engineering documentation, and technical data sheets.

Learn more about centimeters per second in our Speed Converter.

When converting speed between kilometers per second (km/s) and centimeters per second (cm/s), keep full floating-point precision (1 km/s = 100,000 cm/s; 1 cm/s = 0.00001 km/s) during intermediate calculations and round only the final centimeters per second figure to match your instrument tolerance.

More Kilometers per Second & Centimeters per Second Conversions

Need to calculate in the opposite direction? Use our centimeters per second to kilometers per second calculator to switch your starting unit immediately. You can also explore related tools such as converting centimeters per second to kilometers per second, converting miles per hour to kilometers per hour, or converting kilometers per hour to miles per hour.

Convert from Kilometers per Second

Convert to Centimeters per Second

Frequently Asked Questions

There are 100,000 centimeters per second (cm/s) in 1 kilometers per second (km/s). Conversely, 1 centimeters per second (cm/s) is equal to 0.00001 kilometers per second (km/s).

Speed Converter

Quick Info

Direct Factor: 1 kilometers per second (km/s) equals 100,000 centimeters per second (cm/s).
Inverse Factor: 1 centimeters per second (cm/s) equals 0.00001 kilometers per second (km/s).
Formula: centimeters per second = kilometers per second × 100,000.
Verified Precision: Anchored to official NIST SP 811 and ISO/IEC 80000 standards.

Units Comparison

Kilometers per Second (km/s)

Astrophysics & orbital velocity unit equal to 1,000 m/s.

Centimeters per Second (cm/s)

CGS velocity unit equal to 0.01 m/s.

Meters per Second (m/s)

Coherent SI unit of velocity.

References

[1]NIST SP 811 · NIST SP 811 App. B.9 (Velocity)
Source
[2]NIST OWM · SI Units — Length & Distance
Source
[3]NIST CUU · SI Coherent Derived Units (m/s)
Source

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References

NIST · BIPM · ISO

[1]
NIST SP 811 (NIST SP 811 App. B.9 (Velocity))·Speed Metrology Standard — Kilometers per Second (km/s) to Centimeters per Second (cm/s)
NIST SP 811 Standard
[2]
NIST OWM (SI Units — Length & Distance)·Unit Specifications: Kilometers per Second (km/s) & Centimeters per Second (cm/s)
NIST OWM Specification
[3]
NIST CUU (SI Coherent Derived Units (m/s))·Conversion Factors & Mathematical Basis (km/s to cm/s)
NIST CUU Reference

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