Mach to Knots Converter
Convert Mach to Knots
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How to Convert Mach to Knots
Converting Mach (mach) to knots (kn) involves using the speed of sound. Mach 1 is defined as the speed of sound, which is approximately 666.738 knots at sea level and 20°C.
Formula
Knots = Mach × 666.738
or
kn = mach × 666.738
Step-by-step process
- Take the measurement in Mach
- Multiply that number by 666.738
- The result is the equivalent amount in knots
Examples
- 1 mach = 666.738 kn
- 10 mach = 6667.38 kn
- 0.5 mach = 333.369 kn
When to Convert Mach to Knots
This conversion is primarily used in aviation and aerospace engineering, especially when dealing with high-speed aircraft and supersonic flight.
Common Mach to Knots Conversions
Here is a table of common Mach to knots conversions for quick reference:
| Mach (mach) | Knots (kn) | Mach (mach) | Knots (kn) |
|---|---|---|---|
| 1 | 666.738 | 100 | 66673.8 |
| 2 | 1333.476 | 200 | 133347.6 |
| 5 | 3333.69 | 500 | 333369 |
| 10 | 6667.38 | 1,000 | 666738 |
Frequently Asked Questions
How many knots are in one Mach?
One Mach is approximately 666.738 knots (at sea level, 20°C).
Why is the conversion factor 666.738?
The speed of sound varies with temperature and medium. At sea level and 20°C, the speed of sound in dry air is approximately 343 meters per second. Since 1 knot = 0.514444 meters per second, then 343 / 0.514444 ≈ 666.738 knots.