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 mile per hour?

Mile per hour is a unit of speed equal to one mile travelled in one hour. It is the standard unit for road speeds, vehicle performance ratings, and weather reports in the United States and United Kingdom.

Worked examples

1 kilometre per second = 2,236.93629205 mile per hour

1 mile per hour = 0.44704 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).