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Knots ↔ KMH
↔ MPH Converter

Instantly convert between nautical knots, kilometres per hour, miles per hour and metres per second. Type in any unit to update all others.

Enter any value to convert all units

KTS
Knots
KM/H
Kilometres/hour
MPH
Miles/hour
M/S
Metres/second
Quick reference: 1 knot = 1.852 km/h = 1.151 mph = 0.514 m/s
Common boat speeds

Beaufort Scale Wind Reference

Knots Explained — What is a Knot?

A knot is a unit of speed equal to one nautical mile per hour. One nautical mile is 1,852 metres (1.15 statute miles). Knots are used universally in maritime and aviation navigation because they relate directly to the Earth's coordinate system — one nautical mile equals one minute of latitude.

In Malta, weather forecasts from the Meteorological Office typically report wind speed in knots. Marine VHF forecasts and GRIB files used for passage planning also use knots. Knowing how to convert between knots and km/h is essential for understanding sea conditions and planning safe trips.

FAQ

How fast is 20 knots in km/h?
20 knots = 37.04 km/h. Most Malta day charter boats cruise at 18–25 knots (33–46 km/h).
What does 30 knot wind mean for boating?
30 knots (55.6 km/h) is a Force 7 on the Beaufort scale — a "near gale". Most small boats should stay in harbour. Experienced sailors on larger vessels may still venture out in sheltered waters.
What is the speed limit for boats in Malta?
In Malta, the speed limit within 200 metres of shore is 10 knots. Designated waterski and high-speed areas have different limits. Always check local notices to mariners (NtMs) for current restrictions.