Online calculator for thermal air properties in the range -150 - +150 C and up to 11000 m altitude.

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General

The values are taken from the document: Granryd E. "Heat Transfer, Collection of formulas and
Tables of Thermal Properties" used by the Department of Energy Technology, KTH, Stockholm.

The Cina-atmosphere, (Commision International de Navigation Aérienne), is used for altitude
compensation. See: Convection and Air Properties, Altitude Impact.

Inputs

Temp. Is the middle temperature in the list.

Temp step. Is the temperature step in the list.

Altitude. Is the altitude above see level.

Pressure. Is the pressure of the air. This input is
automatically adjusted on cursor exit from the
the altitude input.

Note 1. Only density , kinematic viscosity and Gr*Pr/(dTL3)
are pressure dependent within the altitude validity range,
(0 - 11000 m).

Note 2. Clicking in the diagram opens a panel with tabled results
that can be copied and pasted into a spread sheet.