AVIO · TOOLS FOR PILOTS
Make better flight decisions
Calculators and decoders for pilots and flight simulators. Free to use. No registration. No installation required.
Open METAR decoderWeather
- METAR DecoderTranslate a raw weather report into clear English.
- TAF DecoderBreak down an aerodrome forecast into readable periods.
- Crosswind ComponentCalculate crosswind and headwind or tailwind for a runway.
- Density AltitudeeEstimate aircraft performance from pressure and temperature.
- Pressure ConverterConvert hectopascals to inches of mercury and back.
Flight Calculations
- Weight & BalanceCalculate total weight and center of gravity.
- Fuel PlannerEstimate fuel required, en-route time and reserves.
- Airspeed ConverterConvert IAS to TAS and Mach using altitude and temperature.
- Distance Between PointsCalculate great-circle distance, bearing and estimated time.
- Point of No ReturnCalculate PNR and equal-time point considering wind.
Airports & Navigation
- Airport FinderSearch by ICAO or IATA code, name or city.
- Coordinate ConverterConvert decimal degrees to degrees, minutes and seconds.
- Wind TriangleCalculate heading, drift and ground speed.
- Aviation DictionaryICAO abbreviations, Q codes and phonetic alphabet.
Pilot Guides
- How to Read a METAR ReportLearn how to read METAR reports, decode wind, visibility, weather, clouds, temperature and altimeter settings, and practice with AVIO's METAR decoder.
- How to Read a TAF ForecastA practical guide to reading TAF forecasts, validity periods, TEMPO, BECMG, FM and PROB groups.
- How to Calculate Crosswind ComponentUnderstand crosswind, headwind and tailwind components for runway planning and pilot training.
- What Is Density Altitudee and Why It MattersLearn what density altitude means, why hot and high airports reduce aircraft performance, and how pilots estimate it.
- How to Calculate Fuel Required for a VFR FlightA simple VFR fuel planning workflow covering time en route, fuel burn, taxi fuel and reserve fuel.