All Aviation Calculators

Calculate density altitude from field elevation, pressure, and temperature.

Find pressure altitude from field elevation and altimeter setting.

Convert indicated airspeed to true airspeed at altitude.

Calculate headwind and crosswind components for any runway.

Correct indicated altitude for non-standard temperature to estimate true altitude, with cold-temperature altimeter warnings.

Convert between true airspeed and Mach number in both directions, with local speed of sound.

Check FAR Part 91 pilot currency: passenger day/night, instrument recent experience, and flight review.

Calculate FAA medical certificate expiration dates, class downgrade timelines, and BasicMed validity per 14 CFR 61.23.

ISA temperature, pressure, density, density ratio, and speed of sound at any altitude, with a searchable standard-atmosphere table and downloadable data.

Estimate total fuel required including reserves and contingency.

Calculate how long you can fly on remaining fuel, with reserve-adjusted safe endurance.

Calculate FAA-required reserve fuel for Day VFR, Night VFR, and IFR operations under FAR Part 91.

Estimate how far you can fly on your fuel, with reserve and wind comparison.

Calculate loaded weight, total moment, and center of gravity for Cessna 172, Piper Cherokee, and more. No account required.

Plot your aircraft's center of gravity on the approved envelope chart for Cessna 172, Piper Cherokee, and more. No account required.

Find useful load, full-fuel payload, and the fuel/payload tradeoff from max gross and empty weight.

Find WCA, true heading, and groundspeed from wind data.

All-in-one digital E6B with 8 tabs: TSD, fuel, TAS, wind, density altitude, altitude conversions, units, and off-course correction.

Solve for time, speed, or distance given the other two.

Convert true heading to magnetic and compass heading, with automatic variation lookup by coordinates using the NOAA World Magnetic Model.

Calculate your top of descent point, distance, time, and gradient from descent rate or angle, with a will-I-make-it check.

Find the required rate (ft/min) and gradient (ft/nm) to reach an altitude by a waypoint, with feasibility and ODP guidance.

Identify FAA NASR Class B, C, D, and E airspace at a U.S. location and altitude, with airport lookup and MSL/AGL interpretation.

Determine VFR, MVFR, IFR, or LIFR from ceiling and visibility.

Estimate convective cloud base from temperature and dewpoint.

Decode METAR weather reports into plain English.

Calculate relative humidity and temperature-dewpoint spread, with a carburetor icing risk indicator from FAA AC 61-23C.

Estimate the altitude where the temperature reaches 0 degC, in AGL and MSL, from surface conditions and a lapse rate.

Estimate likely precipitation type (rain, snow, ice pellets, or freezing rain) from the vertical temperature profile. Educational estimator, not a forecast.