Vapor Intrusion Calculator

Note: This calculation was derived from the ideal gas law and assumes a standard temperature and pressure of 25°C and 1 atm.

Please use the following references for more information about calculations. If calculations are needed for other scenarios (i.e. temperature, pressure, or analytes) contact Julia at

  1. EPA Indoor Air Unit Conversion
  2. EPA Indoor Air Unit Conversion Examples (PDF)

Our team is here to ensure that your project objectives and regulatory targets are met.

Email us at or call + 1 800 329 0204.

Contact Us