Mile per Hour to Knot Conversion
Convert between Mile per Hour and Knot quickly and accurately.
How to Convert Mile per Hour to Knot
Conversion Formula
Example
Convert 15 mph to kt:
Unit Information
Learn about the speed units you're converting between
Mile per Hour
mph
Definition
The mile per hour is a unit of speed expressing the number of statute miles traveled in one hour. It is primarily used in the United States, United Kingdom, and other countries that have not fully adopted the metric system for everyday measurements.
History/Origin
Mile per hour has its origins in the British Imperial system and was widely used in the British Empire. It became the standard speed unit in the United States and remains the primary unit for road traffic, aviation, and weather reporting in these countries.
Current Use
Mile per hour is used for speed limits, speedometers, weather reports, and aviation in the US, UK, and other imperial system countries. It is also commonly used in sports, particularly in motorsports and athletics in these regions.
Multiplier
0.447
Offset
0
Knot
kt
Definition
The knot is a unit of speed used in maritime and aviation contexts, representing one nautical mile per hour. It is the standard unit for measuring ship speeds, aircraft speeds, and wind speeds in navigation and meteorology worldwide.
History/Origin
The knot has its origins in maritime navigation, where sailors used a rope with knots tied at regular intervals to measure ship speed. The term "knot" comes from this practice, and it became the standard unit for maritime and aviation speeds.
Current Use
The knot is used worldwide in maritime navigation for ship speeds, in aviation for aircraft speeds, in meteorology for wind speeds, and in various navigation applications. It is the standard unit in these fields regardless of the country's measurement system.
Multiplier
0.514
Offset
0
Mile per Hour to Knot Conversion Table
| Mile per Hour [mph] | Knot [kt] |
|---|---|
| 1 mph | 0.868976 kt |
| 10 mph | 8.689762 kt |
| 25 mph | 21.724406 kt |
| 50 mph | 43.448812 kt |
| 100 mph | 86.897624 kt |
| 0 mph | 0E+0 kt |
| -10 mph | -8.689762 kt |
| -40 mph | -34.75905 kt |
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