How to convert knots to kilometers per hour
Formula: km/h = kn × 1.852. Worked example: 10 kn = 18.52 km/h. Quick estimate: multiply by about 1.9 — the error is 2.6%, fine for everyday use but not for engineering or shopping by exact size.
About these units
A knot is one nautical mile per hour, exactly 1.852 km/h. Knots are used for ship and aircraft speeds and for wind in marine and aviation forecasts; an airliner cruises at roughly 450–500 knots.
Category: speed. Results on this page are calculated in your browser and rounded to 7 significant digits; the table above uses 6. For other units of speed open the full unit converter, or use the reverse page — kilometers per hour to knots.