Convert knots to miles per hour

Enter the number of knots you want to convert to miles per hour in the text box below. The conversion to speed in miles per hour will update as you type.

Answer: 1.1508
knots (kn)
{"answerString":"1.151","answerSymbol":"miles per hour"}
1 knots = 1.151 miles per hour

Precise decimal and fraction answers

The conversion in miles per hour rounded to six significant decimal places is 1 kn = 1.150779 mph. The precise fraction answer is 1 503/3336 mph.

Decimal Precision

Conversion from one to ten decimal places

  • 1 kn = 1.2 mph
  • 1 kn = 1.15 mph
  • 1 kn = 1.151 mph
  • 1 kn = 1.1508 mph
  • 1 kn = 1.15078 mph
  • 1 kn = 1.150779 mph
  • 1 kn = 1.1507794 mph
  • 1 kn = 1.15077945 mph
  • 1 kn = 1.150779448 mph
  • 1 kn = 1.1507794480 mph

How many miles per hour is a knot?

1.151 miles per hour is the same velocity as one knot. A knot is 1.151 times faster than a mile per hour. An object traveling at one mile per hour mile per hour has 86.90% of the velocity of an object moving at one knot.

Knots to miles per hour conversion factor and formulas


The conversion factor between knots and miles per hour is 1.151. This represents the ratio of miles per hour per one knot. To calculate the value in miles per hour, we can either multiply by the conversion factor or divide by its inverse.


To convert from knots to miles per hour, multiply knots by 1.151.
The formula is expressed as:
kn × 1.151 = mph


Alternatively we can divide by the inverse conversion factor to get the same result.
The inverse of 1.151 is 1/1.151 or 0.869. To convert from knots to miles per hour, divide knots by 0.869.
The formula is expressed as:
kn ÷ 0.869 = mph

About this conversion

When converting from from knots to miles per hour, both units are within the US Customary / UK Imperial system and conversion factors are governed by standards set by the controlling body.

About Knots

Customary/Imperial Unit

Knots are a measure of speed over long geographic distances most often associated with the maritime and aviation communities. A knot is a measurement of distance traveled in nautical miles in one hour. The origins of the knot derive from practice of mariners throwing a wooden chip log attached to a line off the stern of a ship. As the ship traveled forward, the line spooled out and the number of physical knots on the line where counted over a 30 second period to determine boat speed. The symbol for knots is either kn or kt.

About Miles per hour

Customary/Imperial Unit

Miles per hour is a velocity measurement within the US/UK Imperial systems. It is defined as the number of miles traveled in one hour. MPH is frequently used for measurement and regulation of vehicle speed limits in the US, UK and many British dependencies. The common symbols for miles per hour are mph, MPH or mi/hr.

Reverse this conversion

Convert from miles per hour to knots instead.

1 knots to other speed units


  • 1 kn = 1.852 km/h


  • 1 kn = 1.151 mph
  • 1 kn = 1 kn

References and Citations

  1. National Institute of Standards and Technology (NIST) General Tables of Units of Measurement

Knots to miles per hour conversion table

kn mph
1 kn 1.151 mph
2 kn 2.302 mph
3 kn 3.452 mph
4 kn 4.603 mph
5 kn 5.754 mph
6 kn 6.905 mph
7 kn 8.055 mph
8 kn 9.206 mph
9 kn 10.357 mph
10 kn 11.508 mph
kn mph
20 kn 23.016 mph
30 kn 34.523 mph
40 kn 46.031 mph
50 kn 57.539 mph
60 kn 69.047 mph
70 kn 80.555 mph
80 kn 92.062 mph
90 kn 103.57 mph
100 kn 115.078 mph
1,000 kn 1,150.779 mph

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