All aviation calculators
All 30 calculators, grouped by what they are for. Every one has its own page with the method, a worked example and the limits of the result.
Atmosphere
About this category- Pressure altitude Convert field elevation and an altimeter setting into pressure altitude.
- Density altitude Field elevation, altimeter setting and temperature into density altitude.
- ISA temperature and deviation Standard temperature at an altitude, and how far today differs from it.
- Convective cloud base Rough estimate of cumulus cloud base from temperature and dew point.
Wind and airspeed
About this category- Runway wind components Split a reported wind into crosswind and headwind or tailwind for a runway.
- Wind triangle Course, true airspeed and wind into heading, drift correction and groundspeed.
- Wind from heading and track Work backwards from what the aircraft actually did to find the wind.
- True airspeed Calibrated airspeed, pressure altitude and temperature into true airspeed.
- Mach number True airspeed and temperature into Mach number and the local speed of sound.
Navigation
About this category- Time, speed and distance Solve whichever of the three you are missing from the other two.
- Great-circle distance and bearing Distance and initial bearing between two latitude and longitude positions.
- True, magnetic and compass heading Convert between the three heading references without losing a sign.
- Off-course correction Drifted off track? Work out the heading change that puts you back on it.
- Flight leg ETA in UTC Departure time plus flight time, with the date rollover handled properly.
- Equal time point The point where turning back and pressing on take the same time.
- Point of no return The furthest point you can reach and still have the fuel to come home.
- VOR time and distance to station Estimate range to a VOR by timing how fast the bearing changes.
Fuel
About this category- Trip fuel required Planned time and fuel flow into the total fuel a trip needs.
- Fuel endurance How long the fuel on board will last before the reserve is reached.
- Range Turn usable endurance and a planned groundspeed into a distance.
- Observed fuel burn rate Work out what your aircraft actually burned, from the refill and the hours.
- Fuel volume and weight Convert a fuel volume into a weight using a density you supply.
Flight path and turns
About this category- Climb gradient and rate Convert rate of climb and groundspeed into a gradient in percent and ft per NM.
- Time and distance to climb How long a climb takes and how far along the route it uses up.
- Top of descent How far out to start down, and the rate of descent it needs.
- Required vertical speed The rate of descent needed to lose a given altitude in a given distance.
- Still-air glide range Theoretical glide distance from a height and a glide ratio you supply.
- Turn radius Airspeed and bank angle into the radius of a coordinated level turn.
- Bank angle for a turn rate The bank angle needed to hold a chosen rate of turn at a given speed.