Meters per Second to Kilometers per Second Converter
Enter the speed in meters per second below to convert it to kilometers per second.
Convert Meters per Second to Kilometers per Second
Enter a value in meters per second (m/s) to convert to kilometers per second (km/s).
Meters per Second to Kilometers per Second Conversion Table
Table showing various meters per second measurements converted to kilometers per second. Click any preset value or arrow to load it into the converter.
| Meters per Second (m/s) | Kilometers per Second (km/s) |
|---|---|
| 1 m/s | 0.001 km/s |
| 2 m/s | 0.002 km/s |
| 2.5 m/s | 0.0025 km/s |
| 5 m/s | 0.005 km/s |
| 10 m/s | 0.01 km/s |
| 15 m/s | 0.015 km/s |
| 20 m/s | 0.02 km/s |
| 25 m/s | 0.025 km/s |
| 30 m/s | 0.03 km/s |
| 50 m/s | 0.05 km/s |
How to Convert Meters per Second to Kilometers per Second
To convert meters per second to kilometers per second, multiply the speed by the following conversion ratio: 0.001 kilometers per second/meters per second.
Since one meters per second is equal to 0.001 kilometers per second, you can use this simple formula to convert:
The speed in kilometers per second is equal to the speed in meters per second multiplied by 0.001.
For example, here's how to convert 5 meters per second to kilometers per second using the formula above.
How Many Kilometers per Second Are in a Meters per Second?
There are 0.001 kilometers per second in a meters per second, which is why we use this value in the formula above.
Our meters per second to kilometers per second calculator automatically converts your speed measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Meters per Second and kilometers per second are both units used to measure speed. Keep reading to learn more about each unit.
What Is a Meters per Second?
Coherent SI unit of velocity. It serves as a primary reference unit for measuring speed across scientific and practical applications. [1]
The meters per second is classified as an International System of Units (SI) unit of speed. Meters per Second can be abbreviated as m/s; for example, 1 meters per second can be written as 1 m/s.
As the primary coherent reference unit for speed in this category, all other speed units are mathematically anchored to the meters per second (m/s).
In practice, meters per second (m/s) are widely used across standard speed applications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
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. [2]
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.
When converting speed between meters per second (m/s) and kilometers per second (km/s), keep full floating-point precision (1 m/s = 0.001 km/s; 1 km/s = 1,000 m/s) during intermediate calculations and round only the final kilometers per second figure to match your instrument tolerance.
More Meters per Second & Kilometers per Second Conversions
Need to calculate in the opposite direction? Use our kilometers per second to meters per second calculator to switch your starting unit immediately. You can also explore related tools such as converting kilometers per second to meters per second, converting meters per second to kilometers per hour, or converting meters per second to miles per hour.
Convert from Meters per Second
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Velocity))·Speed Metrology Standard — Meters per Second (m/s) to Kilometers per Second (km/s)
- [2]NIST OWM SpecificationNIST OWM (SI Units — Length & Distance)·Unit Specifications: Meters per Second (m/s) & Kilometers per Second (km/s)
- [3]NIST CUU ReferenceNIST CUU (SI Coherent Derived Units (m/s))·Conversion Factors & Mathematical Basis (m/s to km/s)