| Conversion Table
               
                 | mile per hour 
                   to Mach  Conversion Table: |  
                 | mph to Ma 
 1.0 = 0.00131
 2.0 = 0.00263
 3.0 = 0.00394
 4.0 = 0.00525
 5.0 = 0.00657
 
 | mile per hour 
                   to Mach 
 6.0 = 0.00788
 7.0 = 0.00920
 8.0 = 0.01051
 9.0 = 0.01182
 10  = 0.01314
 
 |  
               
                 | Mach 
                   to  miles per hour Conversion Table: |  
                 | Ma to mph 
 1.0 = 761.2
 2.0 = 1522.4
 3.0 = 2283.6
 4.0 = 3044.8
 5.0 = 3806
 
 
 | Mach to miles per hour 
 6.0 = 4567.2
 7.0 = 5328.4
 8.0 = 6089.6
 9.0 = 6850.8
 10  = 7612
 
 
 |  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 761.2 miles per hour (mph) = 340.3 meters per second (m/s) = 1225 kph = 1116   foot per second (ft/s) = 661.5 knots (kn, kt or kts). The speed of sound is equal to 678 mph at temperature -48 degrees F and altitude 30000 feet . 1 mile per hour (mph) = 0.44704 meter per second (m/s) = 1.609344  kilometer per hour (kph) = 1.46666667 foot per second (fps, ft/s) = 0.868976242 knots (kn, kt or kts). |