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The ISA-based conversions every pilot and aero student needs: pressure and density altitude, indicated-to-true airspeed, Mach…
Wind-triangle and great-circle math for flight planning: crosswind limits, heading corrections, ground speed, ETA, leg distances…
Runway, climb, descent, glide and fuel numbers taken from AFM data and classic performance equations. Used for go/no-go…
Loading calculations required before every flight: moment summation for CG, percent MAC, weight-shift fixes, ballast and…
Wing and maneuvering theory: the lift equation, wing loading, stall speed, aspect ratio, load factor and turn geometry. Used by…
Naval-architecture and repowering math for boat owners, dealers and students: hull speed, displacement, horsepower needed for a…
Traditional and electronic piloting math for captains, licensing candidates and cruisers: dead reckoning, current set and drift…
Gas and depth math for recreational and technical divers and dive instructors: nitrox limits, equivalent air depth…
Most used in aviation, aerospace & marine
- Density Altitude CalculatorICAO Standard Atmosphere (ISO 2533)Density altitude is the altitude your aeroplane's wing, propeller and engine think they are at. Enter field elevation, the…
- Pressure Altitude CalculatorICAO Standard Atmosphere (ISO 2533)Pressure altitude is your height above the standard datum plane — the altitude your altimeter shows with 29.92 inHg (1013.25…
- True Airspeed (TAS) CalculatorICAO Standard Atmosphere (ISO 2533), compressible-flow airspeed relationsYour airspeed indicator measures dynamic pressure, not speed. As you climb into thinner air the same dynamic pressure…
- 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…
- Takeoff Distance CalculatorCAA Safety Sense correction factorsTake-off distances in a flight manual are demonstrated numbers: a new aeroplane, a test pilot, a dry level paved runway and a…
- Landing Distance CalculatorCAA Safety Sense correction factorsFlight manual landing distances are measured on a dry, level, hard runway at sea level, at maximum weight, by a test pilot…
- Aviation Fuel Burn & Reserve Calculator14 CFR 91.151 / 91.167 fuel reservesThis calculator builds a complete fuel plan for one leg. Enter your cruise fuel flow, the distance and expected ground speed…