Convert Mach to Knot
Use this free converter to change mach (Ma) into knots (kn). Mach and knot both measure speed. As a quick reference, 1 Ma equals 666.73866 kn, and 1 kn equals 0.001499838 Ma.
Free · runs in your browser · no sign-up
Knot (kn)
666.73866
1 Ma = 666.73866 kn
Speed conversion table
| Mach | Knot |
|---|---|
| 0.01 | 6.6673866 |
| 0.1 | 66.673866 |
| 0.5 | 333.36933 |
| 1 | 666.73866 |
| 2 | 1333.4773 |
| 3 | 2000.216 |
| 5 | 3333.6933 |
| 10 | 6667.3866 |
| 20 | 13334.773 |
| 25 | 16668.467 |
| 50 | 33336.933 |
| 100 | 66673.866 |
| 1,000 | 666738.66 |
How to convert Mach to Knot
Multiply the mach value by 666.73866 to get knots.
- Enter the number of mach you want to convert.
- The converter instantly shows the equivalent value in knots.
- Worked example: 15 Ma × 666.73866 = 10001.08 kn.
- Use the swap button to reverse the conversion (knot to mach).
About these units
Mach (Ma)
- Definition
- Mach is a ratio of an object’s speed to the local speed of sound, so Mach 1 is the speed of sound.
- History
- Named after physicist Ernst Mach, the number became important with high-speed flight.
- Current use
- Mach numbers describe the speed of aircraft and spacecraft in aerodynamics.
Knot (kn)
- Definition
- A knot (kn) is a speed of one nautical mile per hour, about 1.852 km/h.
- History
- The name comes from knotted ropes once used to measure a ship’s speed at sea.
- Current use
- Knots are used in marine and air navigation and in meteorology for wind speed.
Frequently asked questions
How many knots are in a mach?
There are 666.73866 kn in 1 Ma. To convert, multiply the number of mach by 666.73866.
How do I convert mach to knots?
Multiply the mach value by 666.73866 to get knots. For example, 10 Ma = 6667.3866 kn.
Is this mach-to-knot converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Mach to other speed units
| Unit | 1 Mach equals |
|---|---|
| Meter per Second (m/s) | 343 m/s |
| Kilometer per Hour (km/h) | 1234.8 km/h |
| Mile per Hour (mph) | 767.26915 mph |
| Knot (kn) | 666.73866 kn |
| Foot per Second (ft/s) | 1125.3281 ft/s |