Free tools
Free tools for pilots and avgeeks. No account needed.
For pilots
- Crosswind calculator
Headwind and crosswind for every runway, using the current wind.
- Density altitude calculator
Pressure altitude and ISA deviation from the current report.
- METAR decoder
Every group of a weather report, beside the characters it came from.
- TAF decoder
A terminal forecast as a timeline, period by period.
- Winds aloft decoder
Direction, speed and temperature at each altitude level.
- Zulu time converter
UTC and local at any airport, with its real timezone rules.
- Sunrise and sunset calculator
Sunrise, sunset and all three definitions of night at any airport.
- Squawk code lookup
What a transponder code means, and why 8 and 9 never appear.
For avgeeks
- ADS-B message decoder
Paste a Mode S message, get every field with the bits it came from.
- Mode S CRC checker
Verify a frame, and find the flipped bit when one fails.
- Mode S message builder
Build a valid frame from a position, a callsign or your own bits.
- ICAO address lookup
Turn a 24-bit aircraft address into its tail number and country.
- Tail number to hex converter
Turn a tail number into the 24-bit address the aircraft broadcasts.
- Airport code converter
ICAO, IATA and FAA codes in one box, either direction.