Convert Mach to knots
1 mach = 661.47 knots · kn = Ma × 661.4708423
When you need this conversion
This conversion goes from mach, speed expressed as a multiple of the speed of sound, to knots, the navigation speed unit for aviation and sailing. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
Mach to knots conversion table
| Mach (Ma) | Knots (kn) |
|---|---|
| 1 Ma | 661.47 kn |
| 2 Ma | 1,322.94 kn |
| 3 Ma | 1,984.41 kn |
| 5 Ma | 3,307.35 kn |
| 10 Ma | 6,614.71 kn |
| 15 Ma | 9,922.06 kn |
| 20 Ma | 13,229.42 kn |
| 25 Ma | 16,536.77 kn |
| 50 Ma | 33,073.54 kn |
| 75 Ma | 49,610.31 kn |
| 100 Ma | 66,147.08 kn |
| 250 Ma | 165,367.71 kn |
| 500 Ma | 330,735.42 kn |
| 1,000 Ma | 661,470.84 kn |
The formula
kn = Ma × 661.4708423Because both units measure speed, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Knots to mach →Related speed conversions
- Kilometers per hour to knots
- Kilometers per hour to miles per hour
- Miles per hour to kilometers per hour
- Knots to kilometers per hour
- Meters per second to knots
- Miles per hour to knots
- Feet per second to knots
- Mach to meters per second
- Mach to kilometers per hour
- Mach to miles per hour
- Mach to feet per second
- Meters per second to kilometers per hour
Frequently asked questions
- How many knots are in a mach?
- There are 661.47 knots in 1 mach. The formula is kn = Ma × 661.4708423.
- How do you convert mach to knots?
- Use the formula kn = Ma × 661.4708423. For example, 10 mach equals 6,614.71 knots.
- Is the mach to knots conversion exact?
- Yes. Mach and knots are both units of speed, related by an exact defined factor. Displayed results are rounded for readability.
- What is Ma short for?
- Ma is the standard symbol for mach. kn is the symbol for knot.