What is kilometre per second?

Kilometre per second is a unit of speed equal to 1,000 metres per second. It is used in astrophysics, rocket propulsion, and the measurement of planetary and cosmic velocities.

What is metre per second?

Metre per second is the SI unit of speed. It is used in physics, engineering, and scientific contexts to express velocity, and serves as the reference unit for all speed calculations in this converter.

Worked examples

1 kilometre per second = 1,000 metre per second

1 metre per second = 1 metre per second

More Speed conversions

• Convert kilometre per second to metre per second
• Convert kilometre per second to kilometre per hour
• Convert kilometre per second to mile per hour
• Convert kilometre per second to knot
• Convert kilometre per second to foot per second
• Convert kilometre per second to metre per minute
• Convert kilometre per second to mach (approx at sea level)
• Convert kilometre per second to centimetre per second
• Convert kilometre per second to mile per minute

Assumption: Mach uses an approximate sea-level reference (about 340.29 m/s).