Converting Aircraft Speeds from Mach Number to Miles Per Hour
When analyzing aircraft performance, there is often a need to switch between Mach number and miles per hour (MPH). While Mach defines velocity as a ratio of the local speed of sound, MPH provides absolute speed in standard units. This guide outlines the basic Mach to MPH conversion process.
Reviewing Mach Basics
As a refresher, the Mach number is calculated as:
Mach Number = Aircraft Velocity / Local Speed of Sound
Since the speed of sound changes with conditions like altitude, reference tables provide set values for conversions:
| Condition | Speed of Sound |
|---|---|
| Sea Level | 761 mph |
| 30,000 ft altitude | 660 mph |
| 50,000 ft altitude | 594 mph |
So Mach 1 is 761 mph at sea level per these standard values.
Calculating MPH from Mach
To transition from Mach number to MPH, you multiply the Mach number by the reference speed of sound value for the flight profile.
For example, an aircraft traveling at Mach 0.82 at 30,000 feet is moving at:
0.82 * 660 mph = 542 mph
This adjusts to the proper speed of sound reference.
Key Takeaways
In summary:
- Mach number is aircraft velocity / local speed of sound
- Speed of sound changes with flight conditions
- Use Mach * speed of sound reference = MPH
- Use MPH/speed of sound reference = Mach
- Converted values account for variable speed of sound
So with the right reference speed of sound values, the Mach number can be converted to standard MPH airspeeds.
Type a value in the Mach field to convert the value to MPH:
MPH:
Formula
MPH=Mach*761.207
Other Value
1 mach to mph
761.207
85 mach to mph
64702.595
2.35 mach to mph
1788.83645
.82 mach to mph
624.1897399999999
.78 mach to mph
593.74146
10.4 mach to mph
7916.5528
10 mach to mph
7612.07
3.35 mach to mph
2550.04345
6.7 mach to mph
5100.0869
.75 mach to mph
570.90525
Mach to MPH Table Chart
| 1 Mach to Miles Per Hour = 761.2071 |
| 2 Mach to Miles Per Hour = 1522.4141 |
| 3 Mach to Miles Per Hour = 2283.6212 |
| 4 Mach to Miles Per Hour = 3044.8282 |
| 5 Mach to Miles Per Hour = 3806.0353 |
| 6 Mach to Miles Per Hour = 4567.2423 |
| 7 Mach to Miles Per Hour = 5328.4494 |
| 8 Mach to Miles Per Hour = 6089.6564 |
| 9 Mach to Miles Per Hour = 6850.8635 |
| 10 Mach to Miles Per Hour = 7612.0705 |
| 20 Mach to Miles Per Hour = 15224.141 |
| 30 Mach to Miles Per Hour = 22836.2115 |
| 40 Mach to Miles Per Hour = 30448.282 |
| 50 Mach to Miles Per Hour = 38060.3525 |
| 60 Mach to Miles Per Hour = 45672.423 |
| 70 Mach to Miles Per Hour = 53284.4936 |
| 80 Mach to Miles Per Hour = 60896.5641 |
| 90 Mach to Miles Per Hour = 68508.6346 |
| 100 Mach to Miles Per Hour = 76120.7051 |
| 200 Mach to Miles Per Hour = 152241.4102 |
| 300 Mach to Miles Per Hour = 228362.1152 |
| 400 Mach to Miles Per Hour = 304482.8203 |
| 500 Mach to Miles Per Hour = 380603.5254 |
| 600 Mach to Miles Per Hour = 456724.2305 |
| 800 Mach to Miles Per Hour = 608965.6407 |
| 900 Mach to Miles Per Hour = 685086.3457 |
| 1,000 Mach to Miles Per Hour = 761207.0508 |
| 10,000 Mach to Miles Per Hour = 7612070.5082 |
| 100,000 Mach to Miles Per Hour = 76120705.0823 |
| 1,000,000 Mach to Miles Per Hour = 761207050.823 |
Related Converters
1. MPH to KPH
2. MPH to Knots
3. MPH to Mach
4. KPH to MPH
5. KPH to Knots
6. KPH to Mach
7. Knots to MPH
8. Knots to KPH
9. Knots to Mach
10. Mach to MPH
11. Mach to KPH
12. Mach to Knots