Convert Mach to knots
mach to knots. Enter a value to convert, or use the Mach to knots chart further down the page.
1 mach equals 661.471 knots. Going the other way, 1 knot = 0.00151178 mach.
How to convert Mach to knots
To convert mach to knots, multiply the mach value by 661.4708423. You can also divide by 0.001511782434 to get the same answer.
kn = M × 661.4708423
Worked example
Convert 60 M to knots:
60 M = 39,688.3 kn
Mach to knots conversion chart
Use this Mach to knots table for quick reference without typing anything.
| mach (M) | knots (kn) |
|---|---|
| 1 M | 661.471 kn |
| 5 M | 3,307.35 kn |
| 10 M | 6,614.71 kn |
| 20 M | 13,229.4 kn |
| 30 M | 19,844.1 kn |
| 40 M | 26,458.8 kn |
| 50 M | 33,073.5 kn |
| 60 M | 39,688.3 kn |
| 70 M | 46,303 kn |
| 80 M | 52,917.7 kn |
| 100 M | 66,147.1 kn |
| 120 M | 79,376.5 kn |
What is a mach?
Mach 1 is the speed of sound. This converter uses 340.29 m/s, the value at sea level in the International Standard Atmosphere.
What is a knot?
A knot is one nautical mile per hour, or exactly 1.852 km/h. It is the standard speed unit in marine and air navigation.
Frequently asked questions
How many knots are in a mach?
1 Mach equals 661.471 knots. Going the other way, 1 knots is 0.00151178 Mach.
How do you convert Mach to knots?
To convert mach to knots, multiply the mach value by 661.4708423. You can also divide by 0.001511782434 to get the same answer.
What is 10 Mach in knots?
10 Mach equals 6,614.71 knots. The conversion chart on this page lists the other values people look up most often.
Related speed conversions
Convert Mach to other units
Convert other units to knots
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