Enter a number in any box and get all the remaining box's results             

    

     Enter the altimeter setting or altitude correction  

    Enter any two fields (i.e. Altitude, Altimeter Setting or Pressure Altitude)
    then press "Eval" on any remaining field for that field's result

    QNH is a term not commonly used in the United States but used in many other countries. It is the altimeter setting setting
    such that the altimeter reads altitude above mean sea level at the airport level. In the U.S. this is referred to as the altimeter
    setting and is usually given by ATC (Air Traffic Control) or the airport ATIS (Airport Terminal Information Service)
    among other sources.

    Note that it does not matter the order that you enter the rows. The remaining row (field) will be
    calculated based on the values of the other two rows when the Eval button of that row is pressed.

   

    Enter any two fields (i.e. Pressure Altitude, Temperature or Density Altitude) then press "Eval" on any remaining field
    for that field's result

    Note that it does not matter the order that you enter the rows. The remaining row (field) will be
    calculated based on the values of the other two rows when the Eval button of that row is pressed.

    Enter any four fields then press "Eval" on any remaining field for that field's result. True Altitude computations are
    inherently imprecise, please be cautious, particularly when extrapolating beyond typical conditions.

    Note 1: If you don't have the Station Altitude set it to zero

    Note 2: It does not matter the order that you enter the rows. The remaining row (field) will be
    calculated based on the values of the other rows when the Eval button of that row is pressed.

    Note 3: True Air Temperature (T) is also referred to as Outside Air Temperature (OAT) or Static Air Temperature (SAT).
     True Air Temperature (T) is sometimes abbreviated (TAT). It is NOT to be confused to Total Air Temperature also
     abbreviated (TAT) which is the same as Indicated Temperature (IAT) or Ram Air Temperatures (RAT).

    Enter any four fields in white on the upper portion or three fields in white on the lower portion then press "Eval" on
    that portion for any remaining field for that field's result. True Airspeed computations are somewhat imprecise, please be
    cautious, particularly when extrapolating beyond typical conditions. When calculating the Recovery Coefficient there is a
    vary narrow range of solutions. The model used takes into consideration compressibility and may be used for speeds
    beyond Mach 1. Correlated Variables display other information and are calculated from results once Eval has been pressed.

    Note 1: If you don't know the recovery coefficient set it to 1.0.

    Note 2: If you don't have the Calibrated Airspeed (CAS) use Indicated Airespeed (IAS) in place of CAS.

    Note 3: True Air Temperature (T) is also referred to as Outside Air Temperature (OAT) or Static Air Temperature (SAT).
     True Air Temperature (T) is sometimes abbreviated TAT. It is NOT to be confused to Total Air Temperature also
     abbreviated TAT which is the same as Indicated Temperature (IAT) or Ram Air Temperatures (RAT).

    Note 4: Indicated Temperature (IAT) is also referd to as Total Air Temperature (TAT) or Ram Air Temperature (RAT).
     Total Air Temperature (TAT) is NOT to be confused to True Air Temperature also abbreviated TAT (see note 2 above)

    Note 5: It does not matter the order that you enter the rows. The remaining row (field) will be
    calculated based on the values of the other rows when the Eval button of that row is pressed.

    Enter any two fields then press "Eval" on any remaining field for that field's result. When calculating the Recovery Coefficient
    there is a vary narrow range of solutions. The model used takes into consideration compressibility and may be used for speeds
    beyond Mach 1. To calculate True Air Temperature (T) use T=IAT-ΔT. Where IAT is the Indicated Air Temperature and ΔT is
    the Temperature Rise.

   Note 1: If you don't know the Recovery Coefficient (C_T) set it to 1.0.

   Note 2: True Air Temperature (T) is also referred to as Outside Air Temperature (OAT) or Static Air Temperature (SAT).
     True Air Temperature (T) is sometimes abbreviated TAT. It is NOT to be confused to Total Air Temperature also
     abbreviated TAT which is the same as Indicated Temperature (IAT) or Ram Air Temperatures (RAT).

    Note 3: Indicated Air Temperature (IAT) is also referd to as Total Air Temperature (TAT) or Ram Air Temperature (RAT).
     Total Air Temperature (TAT) is NOT to be confused to True Air Temperature also abbreviated TAT (see note 2 above)

    Note 4: It does not matter the order that you enter the rows. The remaining row (field) will be
    calculated based on the values of the other rows when the Eval button of that row is pressed.

                            or

                            or

    Enter any two fields in white on the upper portion, three in the middle, or two fields on the lower portion then press "Eval"
    on that portion for any remaining field for that field's result.

    Note 1: If you don't know the recovery coefficient set it to 1.0.

    Note 2: Indicated Air Temperature (IAT) is also referd to as Total Air Temperature (TAT) or Ram Air Temperature (RAT).
     Total Air Temperature (TAT) is NOT to be confused to True Air Temperature also abbreviated TAT. True Air
     Temperature (TAT) or (T) is also referred to as Outside Air Temperature (OAT) or Static Air Temperature (SAT)

    Note 3: It does not matter the order that you enter the rows. The remaining row (field) will be
    calculated based on the values of the other rows when the Eval button of that row is pressed.

     Enter any three fields in white then press "Eval" on any remaining field for that field's result 

    Note 1: True Air Temperature (T) is also referred to as Outside Air Temperature (OAT) or Static Air Temperature (SAT).
     True Air Temperature (T) is sometimes abbreviated TAT. It is NOT to be confused to Total Air Temperature also
     abbreviated TAT which is the same as Indicated Temperature (IAT) or Ram Air Temperatures (RAT).

    Note 2: It does not matter the order that you enter the rows. The remaining row (field) will be
    calculated based on the values of the other rows when the Eval button of that row is pressed.