Convert Mach to Knots
1 Mach = 661.470842 knots. Type any value below to convert in either direction — the calculation happens in your browser.
Mach to Knots formula
Multiply the number of Mach by 661.470842 to get knots.
knots = Mach × 661.470842To go the other way: divide the number of knots by 661.470842, or multiply by 0.001511782.
Mach = knots ÷ 661.470842Mach to Knots conversion table
| Mach | Knots |
|---|---|
| 1 M | 661.470842 kn |
| 2 M | 1,322.942 kn |
| 3 M | 1,984.413 kn |
| 4 M | 2,645.883 kn |
| 5 M | 3,307.354 kn |
| 6 M | 3,968.825 kn |
| 7 M | 4,630.296 kn |
| 8 M | 5,291.767 kn |
| 9 M | 5,953.238 kn |
| 10 M | 6,614.708 kn |
| 15 M | 9,922.063 kn |
| 20 M | 13,229.42 kn |
| 25 M | 16,536.77 kn |
| 30 M | 19,844.13 kn |
| 40 M | 26,458.83 kn |
| 50 M | 33,073.54 kn |
| 75 M | 49,610.31 kn |
| 100 M | 66,147.08 kn |
| 250 M | 165,367.7 kn |
| 500 M | 330,735.4 kn |
| 1,000 M | 661,470.8 kn |
Knots to Mach conversion table
| Knots | Mach |
|---|---|
| 1 kn | 0.001511782 M |
| 2 kn | 0.003023565 M |
| 3 kn | 0.004535347 M |
| 4 kn | 0.00604713 M |
| 5 kn | 0.007558912 M |
| 6 kn | 0.009070695 M |
| 7 kn | 0.01058248 M |
| 8 kn | 0.01209426 M |
| 9 kn | 0.01360604 M |
| 10 kn | 0.01511782 M |
About the Mach
Mach 1 is the speed of sound, about 340.3 m/s at sea level in standard conditions.
About the knot
A knot is one nautical mile per hour and is the speed unit used at sea and in aviation.
Frequently asked questions
How many knots are in a Mach?
There are 661.470842 knots in one Mach.
How many Mach are in a knot?
There are 0.001511782 Mach in one knot.
Is this conversion exact?
The ratio between the Mach and the knot is fixed by definition, so the conversion is exact — the figures shown here are rounded for readability only.
What is 10 Mach in knots?
10 Mach equals 6,614.708 knots.