Convert Mach to knots
1 M = 661.47 kn. Change the amount below, or read the formula and the reference table further down.
1 Mach equals
knots
1 M = 661.47 kn
The formula
Mach and knots both measure speed from the same zero, so a single multiplier does the job.
kn = M × 661.47
Going the other way? Convert knots to Mach.
Mach to knots table
Common values, rounded for reading.
| Mach (M) | Knots (kn) |
|---|---|
| 1 | 661.47 |
| 2 | 1,322.94 |
| 3 | 1,984.41 |
| 4 | 2,645.88 |
| 5 | 3,307.35 |
| 6 | 3,968.83 |
| 7 | 4,630.3 |
| 8 | 5,291.77 |
| 9 | 5,953.24 |
| 10 | 6,614.71 |
| 15 | 9,922.06 |
| 20 | 13,229.42 |
| 25 | 16,536.77 |
| 30 | 19,844.13 |
| 40 | 26,458.83 |
| 50 | 33,073.54 |
| 75 | 49,610.31 |
| 100 | 66,147.08 |
| 250 | 165,367.71 |
| 500 | 330,735.42 |
| 1,000 | 661,470.84 |
Questions people ask
- How many knots are in a Mach?
- One Mach equals 661.47 knots.
- How do I convert Mach to knots by hand?
- Multiply the number of Mach by 661.47. For a rough check, 661.47 is close enough for most everyday use.
- What is 1 Mach in knots?
- 1 Mach is 661.47 knots.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.