Convert Miles per hour (mph) to Knots (kn)
Enter a value below to convert Miles per hour (mph) to Knots (kn).
Conversion:
1 Miles per hour (mph) = 0.86897699264 Knots (kn)
How to Convert Miles per hour (mph) to Knots (kn)
1 mph = 0.86897699264 kn
1 kn = 1.1507784538 mph
Example: convert 15 Miles per hour (mph) to Knots (kn):
25 mph = 21.724424816 kn
Miles per hour (mph) to Knots (kn) Conversion Table
| Miles per hour (mph) | Knots (kn) |
|---|---|
| 0.01 mph | 0.0086897699264 kn |
| 0.1 mph | 0.086897699264 kn |
| 1 mph | 0.86897699264 kn |
| 2 mph | 1.7379539853 kn |
| 3 mph | 2.6069309779 kn |
| 5 mph | 4.3448849632 kn |
| 10 mph | 8.6897699264 kn |
| 20 mph | 17.379539853 kn |
| 50 mph | 43.448849632 kn |
| 100 mph | 86.897699264 kn |
| 1000 mph | 868.97699264 kn |
Miles per hour (mph)
Definition
Miles per hour (mph) is an imperial unit of speed expressing the number of statute miles traveled in one hour. 1 mph ≈ 1.60934 km/h.
History
Miles per hour became the standard speed unit as horse-drawn transport gave way to automobiles in the early 20th century. The United States and United Kingdom adopted mph for their road systems.
Current use
Miles per hour is the official unit for road speed limits and vehicle speedometers in the United States, United Kingdom, and a few other countries. It is also used in baseball (pitch speed) and informal speed references.
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.