Absolute Humidity Calculator

As we know, humidity is the measure of the water vapor in the air expressed as a percentage. Absolute humidity is the actual amount of water in the air. Use this tool to calculate that.

Required Information

Absolute Humidity:

What it is

What is Absolute Humidity?

Create Date: October 17, 2024

Last Modified Date: November 14, 2024

Absolute humidity is the actual amount of water in the air, not a percentage of the air that has water vapor like relative humidity measures.

How do you Calculate Absolute Humidity?

To calculate absolute humidity you only need a couple of variables. The formula for solving absolute humidity is:

An image showing the formula for finding the abolsute humidity value.
Where:
  • AH = Absolute Humidity

  • AVP = Actual Vapor Pressure (in hPa)

  • C = Temperature in Celsius

Understanding Your Results

Your result from this calculator is a single value, the absolute humidity of your specific scenario. It is the total amount of water in the air based on your entries. It is by default displayed as pounds per cubic feet but can be changed into other units of measurement as well.

How to Use the Absolute Humidity Tool

Calculating the absolute humidity of a certain environment is very easy to do with this tool. The steps required to use this tool and get your answer include:

  1. Enter the relative humidity percent into the first field. Do not enter the percent symbol simply enter the numerical value only.

  2. Enter the temperature of the air of your scenario. Change the unit of temperature from Fahrenheit if needed.

  3. Hit calculate and get your absolute humidity value instantly!

Example Calculation

Let's say where you are it is currently 50 degrees Fahrenheit and the relative humidity is at 40%. To find the absolute humidity you can enter 40 into the first field and then enter 50 into the second one. We can then hit calculate and get an answer of .002345 pounds per cubic feet.

Absolute Humidity - Frequently Asked Questions

As temperature increases, the amount of water vapor that air can hold also increases, which can lead to higher absolute humidity values.

Absolute humidity is typically measured in grams per cubic meter (g/m³) or kilograms per cubic meter (kg/m³).

Yes, absolute humidity is the actual amount of water vapor in the air, whereas relative humidity is the ratio of the current amount of water vapor to the maximum amount of water vapor air can hold at a given temperature.

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