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

     Click here for more help and sample problems on this calculator

     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.

   Click here for more help and sample problems on this calculator

    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.

    RELATED WEBSITES:
     Wahiduddin's Website (Interesting website with a very thorough explanation of density altitude)
           Link to a very complete density altitude calculator and discussion of the effects of humidity

    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.

    Enter any four fields on the upper portion orthree fields 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.

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

    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.

    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 (Tt) use Tt=Tc-ΔT. Where Tc is the Calibrated Air Temperature and ΔT is
    the Temperature Rise.

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

    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 two rows when the Eval button of that row is pressed.

                            or

    Enter any two fields on the upper portion orthree 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: 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 then press "Eval" on any remaining field for that field's result 

    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.