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.
Convert knots to km/h
20 knots = 37.04 km/h
1 knots = 1.852 km/h
- 23.0156 mph
- 10.2889 m/s
How to Convert Knots to km/h
Multiply by 1.852
Enter the speed
Type the speed in knots from a ship's log, an AIS reading or a marine forecast.
Read the km/h
The converter multiplies by 1.852 and shows mph and meters per second next to it.
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
Who it is for and what they use it for
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.
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.
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.
Divide km/h by 1.852, or multiply by about 0.54. 100 km/h is 54 knots.
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.
34 knots is 63 km/h, the lower limit of a gale, force 8 on the Beaufort scale.
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