Quick Facts
- Type
- Unit of Measurement
- Definition
- A unit of speed equal to one nautical mile per hour (1
- Used By
- Pilots, ATC
Definition#
A knot (kt) is a unit of speed equal to one nautical mile per hour ≈ 1.852 km/h ≈ 1.151 mph. Winds in METARs and TAFs are reported in knots.
Why It Matters Operationally#
Airspeed, groundspeed, and wind speed in aviation are expressed in knots. METAR wind groups use knots (e.g., 31012KT means 310° at 12 knots). Exceeding crosswind or gust limits in knots triggers operational restrictions.
Related Guides#
- How Airplanes Fly — The Complete Aviation Fundamentals Guide
- How to Read a METAR
- Crosswind Explained