HomeSpeedKnots to Feet per Second

Knots to Feet per Second Converter

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

Online Converter

Convert Knot to Foot per Second

1.68781

Conversion Formula

ft/s = kn × 1.687809857

1 kn in every speed unit

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

Conversion factors

1 kn = 1.68781 ft/s
1 ft/s = 0.592484 kn
ft/s = kn × 1.687809857

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.

Knot to Foot per Second
knft/s
11.68781
58.439049
1016.878099
2542.195246
5084.390493
100168.780986
500843.904929
1,0001,687.809857
Foot per Second to Knot
ft/skn
10.592484
52.962419
105.924838
2514.812095
5029.62419
10059.24838
500296.241901
1,000592.483801

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.
ToolSquare

Need another conversion?

Explore more unit converters for everyday calculations.

Browse Converters