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Knots to km/h Converter

One knot is exactly 1.852 kilometers per hour. Type a speed in knots and get km/h, mph and m/s, or swap to turn km/h into knots.

Unit converter

Convert knots to km/h

20 knots is

37.04km/h

1 knot = 1.852 km/h
  • 23.0156 mph
  • 10.2889 m/s

How to Convert Knots to km/h

Multiply by 1.852

  1. Enter the speed

    Type the speed in knots from a ship's log, an AIS reading or a marine forecast.

  2. Read the km/h

    The converter multiplies by 1.852 and shows mph and meters per second next to it.

  3. Swap if needed

    Use the swap button to turn km/h into knots, which divides by 1.852.

One Knot Is 1.852 km/h

Exact by definition, not an approximation

  • Exact factor

    A knot is one nautical mile per hour and a nautical mile is exactly 1,852 m, so 1 knot is exactly 1.852 km/h.

  • Every speed unit

    One entry shows km/h, mph and m/s, handy when a forecast and a chart disagree on units.

  • Both directions

    Swap the units for km/h to knots, for example to log a river boat's speed in nautical units.

  • Free

    No account and no limit. The conversion runs in your browser.

Who Converts Knots to km/h

  • Sailors and skippers

    Turn boat speed and wind speed in knots into the km/h you use on land.

  • Maritime students

    Check speed conversions for navigation and seamanship exams.

  • Ferry and cruise passengers

    See how fast the ship is going: a ferry at 25 knots is doing 46 km/h.

Frequently Asked Questions

Everything you need to know about the Knots to km/h Converter.

How many km/h is 1 knot?

Exactly 1.852 km/h. A knot is one nautical mile per hour, and the international nautical mile has been defined as 1,852 meters since 1929.

How fast is 20 knots in km/h?

20 knots is 37.04 km/h. 10 knots is 18.52 km/h, 30 knots is 55.56 km/h and 50 knots is 92.6 km/h.

How do I convert km/h to knots?

Divide km/h by 1.852, or multiply by about 0.54. 100 km/h is 54 knots.

Is a knot faster than a km/h?

Yes. One knot is 1.852 km/h, so a speed in knots is always a smaller number than the same speed in km/h.

What does a wind speed of 34 knots mean?

34 knots is 63 km/h, the lower limit of a gale, force 8 on the Beaufort scale.

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