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Jamie's Aviation Flight Computer

Now available as an Android app on the Google Play Store

True Air Speed (TAS) calculator

Pressure Altitude:
 
OAT (Outside Air Temp.):
IAS:
 
TAS:

How TAS (True Air Speed) is calculated

TAS (True Air Speed) is computed from the IAS (Indicated Air Speed) by taking into consideration Pressure Altitude (air density) and temperature. To this end, first a correction to the IAS for the air density/pressure is applied, then a correction for temperature is applied based on the difference between the OAT (Outside Air Temperature) and the ISA temperature at the given altitude.

Note: this calculator is not suitable for supersonic speeds i.e. greater than the speed of sound.


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