E6B Flight Computer

Provides E6B flight computer calculations for VFR pilots.

Each calculation is available in two forms:

• Airport-based — Automatically pulls wind, temperature, and altimeter data from the airport's latest METAR observation. Some airport-based endpoints accept optional overrides for "what if" scenarios.

• Manual — You provide all input values directly. Useful for any location, hypothetical conditions, or when METAR data is not available.

Available Calculations

• Crosswind — Headwind and crosswind components for runway selection

• Density Altitude — Pressure altitude corrected for non-standard temperature

• Wind Triangle — True heading, ground speed, and wind correction angle from course/wind data

• True Airspeed — TAS from calibrated airspeed, pressure altitude, and temperature

• Cloud Base — Estimated ceiling height from temperature/dewpoint spread

• Pressure Altitude — Altitude corrected from field elevation and current altimeter setting

DISCLAIMER: These calculations are intended for PRE-FLIGHT planning purposes only and must not be used for in-flight navigation. Results are approximations based on the ICAO Standard Atmosphere (ISA) model, which assumes mid-latitude atmospheric conditions. The actual tropopause altitude varies from ~26,000 ft at the poles to ~55,000 ft at the equator. Always verify against certified instruments and official flight planning tools.