True Airspeed
True airspeed calculator
Calibrated airspeed, pressure altitude and temperature give the true airspeed and the Mach number — from the ISA standard atmosphere.
A study aid. The formula assumes the ISA standard atmosphere below
36,000 ft and treats indicated airspeed as calibrated. Use the AFM/POH and
the FMS for operational figures.
Inputs
Pressure altitude is altitude with 1013 hPa set.
kt
ft
°C
Result
—
True airspeed
—
—
Mach number
—
ISA deviation
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