Mach 1 is about 762 mph, so mach 20 is about 15,240mph.
The Mach number for speed is a function of how fast an object is going relative to the speed of sound in that medium (which can vary). The speed of sound at sea level is around 768 mph, so Mach 3.3 at around this level will be 768 x 3.3 = 2534 mph
Mach 500 = 380 603.525 mph
Mach 1.6 = 1,217.9 mph
mach 1 = 761.207 mph, so 761.207 * 0.791 = 602.115 mph
Mach 1 is 761.21 mph.Use this equation to convert Mach to miles per hour: mach x 761.21 = mph
Mach 889 is about 659,233 mph
Mach 6 is about 4,449.3 mph
1,750.8 mph
About 761 mph
about 655 MPH
Mach 1.7 is equal to about 1294 mph.
645.38104_MPH_">645.38104 MPH-is 0.87 Mach -
3044.83 mph
1534.54 mph
about 5100 mph
4567.24 mph
Mach 3.3 is about 2,512 mph depending on altitude.