E6B Flight Computer: Wind & DA

An E6B flight computer in your pocket. Type the numbers, read the answer: wind triangle, true airspeed, density altitude, fuel, time-speed-distance, top of descent and more, worked with real formulas instead of rules of thumb.

Made for student and private pilots, instrument and commercial pilots, flight instructors and anyone preparing for the written test.

WHAT YOU CAN DO
• True airspeed, Mach and equivalent airspeed from calibrated airspeed, altitude and temperature
• Density altitude, pressure altitude and ISA deviation, with optional humidity
• True altitude, to see the cold-weather error in your altimeter
• Wind triangle: true heading, ground speed and wind correction angle, with a compass diagram
• Find the wind from your heading, track and speeds
• Runway crosswind and headwind, with gust and your own demonstrated limit
• Time, speed and distance (fill in any two), fuel and endurance with a reserve
• Point of no return and equal time point
• Climb and descent: rate, gradient, angle, top of descent, obstacle clearance
• Turn radius and rate, glide distance, holding pattern entry
• Weight and balance with a CG envelope chart for your aircraft
• Great circle distance and course, magnetic and compass course, cloud base and freezing level
• Sunrise, sunset and civil twilight in Zulu, Zulu and local clocks, flight timer, countdown
• Unit converter for distance, altitude, speed, weight, volume, temperature, pressure and fuel

UNITS
Choose knots, km/h or mph; nautical miles, kilometres or statute miles; inHg or hPa; °C or °F; US gallons, litres or imperial gallons. Every calculation is worked in the units you pick.

GOOD TO KNOW
• Works without a connection: no account, no sign-up, your entries stay on your phone
• Shows banner ads. A consent form appears first where the law requires one
• A planning aid, not certified for navigation. Not for primary navigation: always cross-check against your POH and approved charts
• The maths follows the ICAO standard atmosphere and compressible-flow relations, and is tested against published reference values