Pilot tools
Aviation Unit Converters
Flight-planning converters for fuel, airspeed, altimeter settings, altitude, distance, wind, and visibility — with answer-first results.
How factors are sourced, how the library is updated, and how IEEE 754 rounding is treated are documented on the About page.
Offline pilot pack
Save aviation converters for use without signal.
Works best after you install the site to your home screen. Open these tools once online, or tap save to cache the full pack.
Fuel Volume to Weight
Convert Jet A, AVGAS, and Jet B liters or gallons to pounds and kilograms for weight-and-balance.
Mach to TAS
Convert Mach number to true airspeed using OAT or ISA altitude.
Altimeter Setting
Convert altimeter settings between inHg and hPa/mbar for US and ICAO ops.
Flight Level & Altitude
Convert flight level to feet, feet to meters, and estimate ISA temperature.
Aviation Distance
Convert nautical miles, statute miles, kilometers, and meters for flight planning.
CAS / IAS to TAS
Convert calibrated or indicated airspeed to true airspeed with pressure altitude and OAT.
Fuel Flow & Endurance
Convert fuel burn between gal/h, L/h, lb/h, and kg/h, plus endurance from fuel remaining.
Crosswind Component
Calculate crosswind and headwind components from runway heading and wind.
Visibility / RVR
Convert visibility and RVR between meters, statute miles, feet, and kilometers.
Aircraft Weight
Convert payload, aircraft, and baggage weights between kilograms and pounds.
Aviation converter FAQs
How these pilot tools fit into flight planning.
Which aviation converters are included?
Fuel volume to weight, Mach to TAS, CAS/IAS to TAS, altimeter inHg↔hPa, flight level and altitude, nautical-mile distance, fuel flow/endurance, crosswind components, visibility/RVR, and aircraft kg↔lb.
Are fuel densities exact for weight-and-balance?
The fuel tools use common planning densities (Jet A 6.7, AVGAS 6.0, Jet B 6.5 lb/US gal). Prefer the density on the fuel ticket for final weight-and-balance.
Why do airspeed tools ask for temperature or altitude?
True airspeed depends on atmospheric conditions. Mach↔TAS needs OAT (or ISA altitude). CAS/IAS↔TAS needs pressure altitude and OAT for the density ratio.