Convert knot to kilometre per hour

1 knot = 1.852 kilometres per hour. Enter any value below for an exact conversion.

Value in knots

1 kn =

1.852 km/h

kilometres per hour

Need the reverse? Convert kilometre per hour to knot →

Formula

1 knot = 1.852 kilometres per hour
kilometre per hour = knots × 1.852
knot = kilometres per hour × 0.5399568

knot to kilometre per hour conversion table

1 kn1.852 km/h

2 kn3.704 km/h

3 kn5.556 km/h

5 kn9.26 km/h

10 kn18.52 km/h

20 kn37.04 km/h

25 kn46.3 km/h

50 kn92.6 km/h

100 kn185.2 km/h

1000 kn1852 km/h

About converting knots to kilometres per hour

Knots to kilometres per hour converts marine and aviation speeds into the metric road unit. One knot is about 1.852 km/h — the nautical mile is defined as 1,852 metres — so a 15-knot boat is doing roughly 28 km/h.

Method & sources

Conversions use exact legal definitions rather than rounded approximations: 1 inch = 2.54 cm and 1 pound = 0.45359237 kg (fixed by the 1959 international yard and pound agreement), 1 mile = 1.609344 km, and 1 US liquid gallon = 3.785411784 litres. Temperatures convert with °F = °C × 9⁄5 + 32 and K = °C + 273.15. Results are rounded only for display.

Page last updated: October 1, 2026

Frequently asked questions

How many kilometres per hour are in a knot?

One knot equals 1.852 kilometres per hour. So 10 knots is 18.52 kilometres per hour. Use the converter above for any value.

What is the formula to convert knots to kilometres per hour?

1 knot = 1.852 kilometres per hour kilometre per hour = knots × 1.852 knot = kilometres per hour × 0.5399568

Is the knot-to-kilometre per hour conversion exact?

Yes. The conversion factor between knots and kilometres per hour is defined exactly, so results are precise — only rounded for display.

All units →

These free tools pair well with this page — open them in a new tab to finish your workflow.