Convert Knots (kn) to Mach (speed of sound)
Enter a value below to convert Knots (kn) to Mach (speed of sound).
Conversion:
1 Knots (kn) = 0.0014998367347 Mach (speed of sound)
How to Convert Knots (kn) to Mach (speed of sound)
1 kn = 0.0014998367347 mach
1 mach = 666.73923692 kn
Example: convert 15 Knots (kn) to Mach (speed of sound):
25 kn = 0.037495918367 mach
Knots (kn) to Mach (speed of sound) Conversion Table
| Knots (kn) | Mach (speed of sound) |
|---|---|
| 0.01 kn | 0.000014998367347 mach |
| 0.1 kn | 0.00014998367347 mach |
| 1 kn | 0.0014998367347 mach |
| 2 kn | 0.0029996734694 mach |
| 3 kn | 0.0044995102041 mach |
| 5 kn | 0.0074991836735 mach |
| 10 kn | 0.014998367347 mach |
| 20 kn | 0.029996734694 mach |
| 50 kn | 0.074991836735 mach |
| 100 kn | 0.14998367347 mach |
| 1000 kn | 1.4998367347 mach |
Knots (kn)
Definition
A knot (kn) is a unit of speed equal to one nautical mile per hour (approximately 1.852 km/h or 1.151 mph). It is derived from maritime navigation practices.
History
The knot originated from a 17th-century method of measuring ship speed by counting knots on a rope paid out over a fixed time from a 'chip log'. The practice gave rise to the unit name that persists today.
Current use
Knots are the standard speed unit in maritime and aviation navigation worldwide. Air traffic control, ship navigation, weather reports for marine and aviation use, and ocean current speeds all use knots.
Mach (speed of sound)
Definition
Mach is a dimensionless unit representing the ratio of an object's speed to the local speed of sound. Mach 1 equals the speed of sound (approximately 343 m/s or 1,235 km/h at sea level in standard conditions).
History
The Mach number was named after Ernst Mach, an Austrian physicist who studied supersonic motion in the 19th century. It became critical during World War II and the subsequent development of jet and rocket aircraft.
Current use
Mach numbers are essential in aerospace engineering, military aviation, and supersonic transport. Fighter jets, commercial aircraft approaching transonic speeds, and spacecraft re-entry velocities are all described using Mach.