6 calculators in this category
- Crosswind & Headwind Component CalculatorVector resolution; demonstrated crosswind per 14 CFR 23.2105 / CS-23A wind of "300 at 18 gusting 25" means nothing until you resolve it against the runway you intend to use. This calculator…
- Wind Correction Angle & Heading CalculatorWind triangle (law of sines solution)This calculator solves the wind triangle. Give it the true course you want to track, your true airspeed, and the wind direction…
- Ground Speed Calculator (Wind Triangle)Wind triangle (vector solution)Ground speed is the number every estimate on your flight plan rests on: time en route, fuel required, and whether you make the…
- Flight Time & ETA CalculatorICAO flight plan estimated elapsed time (Doc 4444)Time en route is distance divided by ground speed, and everything else on a flight plan hangs off it: fuel required, reserve…
- Great Circle Distance & Bearing CalculatorHaversine formula on a spherical EarthThe shortest route between two points on the Earth is an arc of the great circle through them, not the straight line on a…
- Top of Descent CalculatorRule of three / 3 degree glidepath geometryThis calculator tells you how far from the destination or crossing fix to start down, and how fast to come down once you do…
Which one do you need?
- Crosswind & Headwind Component Calculator
- Resolve a reported wind into crosswind and headwind components for any runway, including the gust component, and compare it with your demonstrated crosswind.
- Wind Correction Angle & Heading Calculator
- Solve the wind triangle: enter true course, true airspeed and the wind, and get the wind correction angle, true heading, ground speed and crosswind.
- Ground Speed Calculator (Wind Triangle)
- Compute ground speed from true airspeed, course and wind. Get the effective headwind or tailwind, the crosswind component, drift angle and the heading to fly.
- Flight Time & ETA Calculator
- Turn leg distance and ground speed into time en route, block time and a UTC or local ETA, with taxi and climb allowances and decimal hours for the logbook.
- Great Circle Distance & Bearing Calculator
- Compute great-circle distance and initial and final bearing between two latitude-longitude points in nautical miles, kilometers and statute miles, plus the midpoint.
- Top of Descent Calculator
- Work out where to start down: top of descent distance, required rate of descent and descent time from your cruise altitude, ground speed and angle.