| Conversion Table
               
                 | Mach 
                   to kilometers per hour  Conversion Table: |  
                 | Ma to kph 
 1.0 = 1225.03
 2.0 = 2450.06
 3.0 = 3675.09
 4.0 = 4900.12
 5.0 = 6125.15
 | Mach 
                   to kilometers per hour 
 6.0 = 7350.18
 7.0 = 8575.21
 8.0 = 9800.24
 9.0 = 11025.27
 10  = 12250.3
 |  
               
                 | kilometers per hour 
                   to  Mach Conversion Table: |  
                 | kph to Ma 
 1.0 = 0.00082
 2.0 = 0.00163
 3.0 = 0.00245
 4.0 = 0.00327
 5.0 = 0.00408
 
 | kilometers per hour to Mach 
 6.0 = 0.0049
 7.0 = 0.00571
 8.0 = 0.00653
 9.0 = 0.00735
 10  = 0.00816
 
 |   Mach number (Ma or M)  is the speed of an object moving in air, divided by the speed of sound  at that  particular  conditions, including temperature and pressure. At Standard Sea Level and temperature  15 degrees Celsius, the speed of sound is 1225.03 kilometers per hour, kph (km/h)  = 761.2 mph = 340.3 meters per second (m/s)  = 1116   foot per second (ft/s) = 661.5 knots (kn, kt or kts). The speed of sound is equal to 1091 kph (km/h) = 678 mph at temperature -48 degrees F and altitude 30000 feet .  |