Knots to KM/H converter

How to convert knots to kilometers per hour

To convert knots to kilometers per hour, use km/h = kn × 1.852. For example, 50 kn is 92.6 km/h. Type any value in the converter above and the result updates instantly.

The Knots to KM/H formula

The conversion is km/h = kn × 1.852. One knot equals 1.852 km/h. This conversion is exact: knot is defined precisely in terms of kilometer per hour, so the only rounding is in the digits shown.

Knots to KM/H conversion table

Where knots and kilometers per hour are used

Knots measure speed at sea and in the air: one knot is one nautical mile per hour.

Kilometers per hour is the speed unit on road signs and vehicle instruments in most of the world.

Worked examples

These examples use the formula above, so you can check the converter or do the same by hand:

• 5 kn = 9.26 km/h
• 15 kn = 27.78 km/h
• 30 kn = 55.56 km/h

Converting knots to kilometers per hour in your head

As a quick estimate, multiply by 1.9 (rounded).

KM/H to Knots reference table

For the opposite direction, these values are handy to have at hand:

Common mistakes to avoid

• Speed limits, aviation and sailing use different units: knots are used at sea and in the air, not on roads.
• Rounded rules of thumb are fine for driving estimates but not for precise engineering calculations.

About this converter

The converter accepts whole numbers, decimals and negative values, gives the result as you type, and uses full precision internally, so what you copy is as accurate as it can be. It runs in your browser: nothing you type is sent to a server, it keeps working offline once the page has loaded, and there is nothing to install.