Speed Units

International System of Units (SI)

1 meter per second is the unit of measurement of speed in SI.

• Kilometer per second [km/s] = 1000 m/s.
• Meter per second [m/s] = 0.001 km/s.
• Kilometer per hour [km/h] = 16.66666666 m/min.
• Meter per minute [m/min] = 0.06 km/h.

Imperial and Customary units

• Mile per second [mps] = 1609.34401 m/s.
• Mile per hour [mph] = 0.44704 m/c.
• Foot per second [fps] = 0.3048 m/s.
• Foot per minute [fpm] = 0.00508 m/c.

Marine units

• Knot [kn] = 1.852 km/h
• Mile per hour [mph] = 1.852 km/h