Tools
Quick calculators for the flight deck and the controller's position. They run in your browser, work offline once loaded, and are built for simulation, not real-world operations.
For pilots
Wind componentsHeadwind and crosswind for any runway, and the best runway for the wind.
METAR and TAF decoderFetch live weather for an airport or paste a report, and read it in plain English.
Holding entryDirect, teardrop or parallel: see which entry to fly and how it looks.
Descent plannerTop of descent distance and the vertical speed for your groundspeed.
Distance and timeGreat-circle distance, initial course and flight time between two airports.
Fuel plannerTrip, contingency, alternate and final reserve fuel in one block figure.
Density altitudePressure and density altitude from elevation, QNH and temperature.
For controllers
ATIS builderTurn a METAR into a complete ATIS broadcast, and hear it read aloud.
Transition levelTransition level from the transition altitude and QNH.
Squawk generatorValid transponder codes that avoid the reserved ones.
Wake turbulence separationICAO radar separation minima between wake categories.
For everyone
Unit converterPressure, altitude, speed, distance, temperature, weight and volume.
Phonetic alphabet trainerSpell callsigns the radio way, and test yourself.