How to convert knots to miles per hour
To convert a measurement in knots to miles per hour, multiply the value by 1.150779. The conversion factor comes from the relationship between both units and the meter per second.
For example, to convert 5 kn to miles per hour: 5 × 1.150779 = 5.753897 mph.
What is a knot?
A knot is a unit of speed equal to one nautical mile per hour, or exactly 1.852 km/h (about 0.514 m/s). The knot dates from the age of sail, when speed was measured by counting knots on a rope paid out behind a ship over a timed interval. It remains standard in marine and air navigation.
Common uses of knots include: Maritime navigation and ship speed; Aviation airspeed and ground speed; Wind speed in marine forecasts; Ocean current measurements.
What is a mile per hour?
The mile per hour is an imperial unit of speed equal to one mile traveled in one hour, or exactly 0.44704 meters per second. Mph remains the standard for road speed in the United States and United Kingdom, a legacy of the imperial mile that predates widespread metric adoption elsewhere.
Common uses of miles per hour include: Road speed limits in the US and UK; Vehicle speedometers in imperial countries; Wind and storm speed reporting (US); Baseball pitch and sports speeds.
Knots to miles per hour worked examples
Here are some common values converted:
1 kn = 1.150779 mph 5 kn = 5.753897 mph 10 kn = 11.507794 mph 50 kn = 57.538972 mph 100 kn = 115.077945 mph
Frequently asked questions
How many miles per hour are in one knot?
One knot (kn) equals 1.150779 miles per hour (mph). Multiply any value in knots by 1.150779 to convert to miles per hour.
How do I convert knots to miles per hour?
Multiply the value in knots by 1.150779. For example, 5 kn × 1.150779 = 5.753897 mph.
How do I convert miles per hour to knots?
Multiply the value in miles per hour by 0.868976241901, or divide by 1.150779. Use the swap button on the converter above to reverse the direction.
Is the knot to mile per hour conversion exact?
Conversions between m/s, km/h, mph, knots and ft/s are exact by definition. Mach uses the speed of sound at sea level and 15°C (340.29 m/s), which varies with temperature and altitude.
What is the formula for knots to miles per hour?
The formula is: mph = kn × 1.150779. This comes from the definition of both units relative to the meter per second.