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Free Absolute Humidity Calculator

Convert relative humidity to absolute humidity (g/m³).

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Inputs

%

Result

Absolute humidity

11.51 g/m³

Saturation vapor pressure31.67 hPa
Actual vapor pressure15.84 hPa

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Short answer

Convert relative humidity to absolute humidity (g/m³).

What is the Absolute Humidity Calculator?

Convert relative humidity to absolute humidity (g/m³).

How does the Absolute Humidity Calculator work?

Enter the inputs above and read the result.

Formula

AH = 216.7 × (VP / (273.15+T)), VP = SVP × RH/100

Variables

  • SVPSaturation vapor pressure

Explanation

Absolute humidity measures the actual mass of water vapor per cubic metre of air, unlike relative humidity.

Examples

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          Tips

            Related concepts

            The Absolute Humidity Calculator sits inside the Everyday & Utility Calculators hub, in the weather & environment cluster. Perceived conditions and environmental readings. Understanding the terms below makes the output easier to interpret and easier to compare against neighbouring measures.

            apparent temperaturehumidityexposure

            Practical use cases and industry applications

            Understanding Absolute Humidity

            Convert relative humidity to absolute humidity (g/m³). Within everyday & utility calculators, absolute humidity belongs to the weather & environment cluster, where it shares terminology and assumptions with closely related tools.

            Learning how absolute humidity is calculated

            Absolute humidity measures the actual mass of water vapor per cubic metre of air, unlike relative humidity. Working through the variables one at a time — SVP — makes the result reproducible by hand and easier to sanity-check.

            Using absolute humidity to make a decision

            Because outputs depend on the assumptions you enter, run more than one scenario before committing to a figure.

            How absolute humidity compares with related measures

            apparent temperature, humidity, exposure all describe adjacent aspects of weather & environment. Comparing this calculator's output against those measures — using the related tools listed on this page — prevents a single metric from being read in isolation.

            Frequently asked questions

            Related calculators

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