Is this Mixing Ratio of Air Calculator free to use?

Yes, Mixing Ratio of Air Calculator is 100% free to use online with no installation or account required.

How do I use the Mixing Ratio of Air Calculator?

Simply enter your values into the required input fields and click calculate to view the results instantly.

Yes, the calculator is fully responsive and compatible with Android, iOS, Windows, macOS, and Linux web browsers.

Mixing Ratio of Air Calculator — Free Online Tool

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Calculate water vapor mixing ratio of moist air

Formula: $r = 0.622 \cdot \frac{e}{P - e}$
Where $e$ is water vapor pressure and $P$ is total atmospheric pressure (in the same units).

Atmospheric Parameters

Vapor Pressure ($e$, hPa / mb)

Total Air Pressure ($P$, hPa / mb)

⚠️ For meteorology and physics education reference only. Assumes ideal gas mixture behavior for dry air and water vapor.

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