Convert Knot to Mach
Use this free converter to change knots (kn) into mach (Ma). Knot and mach both measure speed. As a quick reference, 1 kn equals 0.001499838 Ma, and 1 Ma equals 666.73866 kn.
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Mach (Ma)
0.001499838
1 kn = 0.001499838 Ma
Speed conversion table
| Knot | Mach |
|---|---|
| 0.01 | 0.00001499838 |
| 0.1 | 0.0001499838 |
| 0.5 | 0.00074991901 |
| 1 | 0.001499838 |
| 2 | 0.0029996761 |
| 3 | 0.0044995141 |
| 5 | 0.0074991901 |
| 10 | 0.01499838 |
| 20 | 0.029996761 |
| 25 | 0.037495951 |
| 50 | 0.074991901 |
| 100 | 0.1499838 |
| 1,000 | 1.499838 |
How to convert Knot to Mach
Multiply the knot value by 0.001499838 to get mach.
- Enter the number of knots you want to convert.
- The converter instantly shows the equivalent value in mach.
- Worked example: 15 kn × 0.001499838 = 0.02249757 Ma.
- Use the swap button to reverse the conversion (mach to knot).
About these units
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.
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.
Frequently asked questions
How many mach are in a knot?
There are 0.001499838 Ma in 1 kn. To convert, multiply the number of knots by 0.001499838.
How do I convert knots to mach?
Multiply the knot value by 0.001499838 to get mach. For example, 10 kn = 0.01499838 Ma.
Is this knot-to-mach 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 Knot to other speed units
| Unit | 1 Knot equals |
|---|---|
| Meter per Second (m/s) | 0.51444444 m/s |
| Kilometer per Hour (km/h) | 1.852 km/h |
| Mile per Hour (mph) | 1.1507794 mph |
| Foot per Second (ft/s) | 1.6878099 ft/s |
| Mach (Ma) | 0.001499838 Ma |