Mach 1 (or the speed of sound) is 1,225km per hour Mach 75 is there for 91,875 km/h
Mach 1 is 761.21 mph.Use this equation to convert Mach to miles per hour: mach x 761.21 = mph
Mach 1 is the speed of sound. 768 miles per hr. Mach 2 is twice that & so on.
Mach 3.3 equates to about 2,512 miles per hour.
Mach 1 = 761.207051 Miles Per Hour Mach 2 = 1,522.4141 Miles Per Hour Mach 3 = 2,283.62115 Miles Per Hour Mach 4 = 3,044.8282 Miles Per Hour http://en.wikipedia.org/wiki/Mach_number
Mach 19 is 14,462,934 miles per an hour
Mach ten is equal to 7,612 miles per hour.
Mach 10 = 7,612.07 mph
Answer: 219,000 km/h = 136,080.291 mph
Mach 85 is 64,702.6 mph
Mach 6 is about 4,567 mph
Mach 0.80 is approximately 611.63 miles per hour.