Knots to Mach Number Converter
CommonMeters per second, km/h, mph and more.
How to convert Knots to Mach Number
Multiply the knots value by 0.00149984: 1 kn = 0.00149984 M. Going the other way, 1 M = 666.739 kn, so divide by 0.00149984 or use the Mach Number to Knots converter.
About these units
Knots (kn)
A knot is one nautical mile per hour, exactly 1.852 km/h or about 1.151 mph. Ship and aircraft speeds and wind speeds at sea are given in knots.
Mach Number (M)
Mach number is speed divided by the local speed of sound; this converter uses 343 m/s, the value in air at 20 °C. Mach 1 at sea level is therefore about 1,235 km/h.
Knots to Mach Number conversion table
| Knots (kn) | Mach Number (M) |
|---|---|
| 1 kn | 0.00149984 M |
| 2 kn | 0.00299967 M |
| 3 kn | 0.00449951 M |
| 4 kn | 0.00599935 M |
| 5 kn | 0.00749918 M |
| 10 kn | 0.0149984 M |
| 20 kn | 0.0299967 M |
| 25 kn | 0.0374959 M |
| 50 kn | 0.0749918 M |
| 100 kn | 0.149984 M |
| 500 kn | 0.749918 M |
| 1,000 kn | 1.49984 M |
More knots conversions
- Knots to Meters per Second1 kn = 0.514444 m/s
- Knots to Kilometers per Hour1 kn = 1.852 km/h
- Knots to Miles per Hour1 kn = 1.15078 mph
- Knots to Feet per Second1 kn = 1.68781 ft/s
- Knots to Speed of Light1 kn = 1.716e-9 c
- Knots to Centimeters per Second1 kn = 51.4444 cm/s
- Knots to Kilometers per Second1 kn = 0.000514444 km/s
See every unit on the Speed Converter.