Unit Converter Speed [length/time] Input centimeters/minute centimeters/second feet/hour feet/minute feet/second inches/minute inches/second kilometers/hour kilometers/second knots knots (UK) Mach number (ISA/SL) meters/hour meters/minute meters/second [m/s] miles/hour miles/minute miles/second speed of light yards/hour yards/minute yards/second Output centimeters/minute centimeters/second feet/hour feet/minute feet/second inches/minute inches/second kilometers/hour kilometers/second knots knots (UK) Mach number (ISA/SL) meters/hour meters/minute meters/second [m/s] miles/hour miles/minute miles/second speed of light yards/hour yards/minute yards/second