HomeSpeedMiles per Hour to Knots

Miles per Hour to Knots Converter

Convert miles per hour to knots with the formula, a reference table and every speed unit.

Online Converter

Convert Mile per Hour to Knot

0.868976

Conversion Formula

kn = mph × 0.8689762419

1 mph in every speed unit

Tap a unit to make it the target of the converter above.

Conversion factors

1 mph = 0.868976 kn
1 kn = 1.150779 mph
kn = mph × 0.8689762419Read the full guide: Knots to Miles per Hour

Using this converter

How to use
  1. 1

    Enter a value

    Type a number into the From box. It starts at 1 so you can see the basic ratio straight away. Thousands separators such as 1,250.5 are accepted.

  2. 2

    Choose your units

    This page opens with its own units selected. Use either dropdown to pick any other unit in the category, or tap a unit in the all-units list to make it the target.

  3. 3

    Read the result

    The answer updates as you type and the matching formula is shown underneath. There is no Convert button to press.

  4. 4

    Swap, copy or clear

    Swap reverses the direction, Copy Result copies a line such as 1 km = 0.621371 mi, and Clear empties the input so you can start again.

Supported input formats

Input

  • Supported
    Whole numbers25
  • Supported
    Decimal numbers2.75

    Use a dot as the decimal separator.

  • Supported
    Negative numbers-40

    Calculated for every unit. Quantities such as length or weight are normally positive, while temperatures can be negative.

  • Supported
    Thousands separators1,250.5

    Commas must group digits in threes. 1,234 is read as one thousand two hundred thirty-four.

  • Supported
    Scientific notation1.5e6

    Useful for very large or very small values (1.5e6 = 1,500,000).

  • Not supported
    Comma as decimal mark2,5

    Type 2.5 instead.

  • Not supported
    Fractions1/2

    Type 0.5 instead.

  • Not supported
    Numbers with unit text5 km

    Enter only the number and choose the unit from the dropdown.

Output

Results use US English formatting (1,234.56) and show up to 6 decimal places with trailing zeros removed. Very small results appear in scientific notation, such as 9.0949e-13, instead of rounding to zero.

Units available in this converter

  • Meter per Second (m/s)
  • Kilometer per Hour (km/h)
  • Mile per Hour (mph)
  • Foot per Second (ft/s)
  • Knot (kn)

Quick reference tables

Common values for the units currently selected above, in both directions.

Mile per Hour to Knot
mphkn
10.868976
54.344881
108.689762
2521.724406
5043.448812
10086.897624
500434.488121
1,000868.976242
Knot to Mile per Hour
knmph
11.150779
55.753897
1011.507794
2528.769486
5057.538972
100115.077945
500575.389724
1,0001,150.779448

Limitations

  • Mph uses the statute mile and the knot equals one nautical mile per hour.
  • Mach number is not supported because it depends on altitude and air temperature.
  • Results show up to 6 decimal places. Values are not rounded during calculation, and a non-zero result that would display as 0 is shown in scientific notation.
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