E6B flight computer
Wind triangle, pressure & density altitude, true airspeed, fuel and time, and the classic E6B unit conversions — free, in your browser, no download. Nothing you type here is sent anywhere; every calculation runs on your device, and the page keeps working offline once it has loaded once.
Wind triangle
Enter course, TAS and wind.
Pressure & density altitude
Enter elevation and altimeter.
Fuel & time
Enter fuel and burn, or distance and ground speed.
Unit conversions
How this works
This is the same math as the E6B in the SimpliFlight app — the wind-triangle solution, the pressure/density-altitude and true-airspeed rules of thumb, and the standard aviation unit conversions. It's a planning aid using the classic E6B approximations, not certified performance data — always cross-check against your POH and current weather before you fly.
Flying the leg you just planned? SimpliFlight logs it from the Hobbs reading, tracks the route, and keeps a DPE- and IRS-ready record — no manual entry. Download on the App Store