ppm to mg/m³ Conversion Calculator

How it works

ppm = (mg/m³ value )(24.45)/(molecular weight)

mg/m³ = ( ppm value)(molecular weight)/24.45

24.45 is a conversion factor that represents the volume of one mole of gas.

To determine the molecular weight of a particular substance, add the atomic weights (look at the MSDS of the particular substance) of each atom present in the chemical formula of that particular substance

Note: this calculation assumes a temperature of 25°C (77°F) and a pressure of 1 atmosphere (760 torr or 760 mm Hg).

References:

National Institute of Standards and Technology Periodic Table http://www.nist.gov/pml/data/periodic.cfm

National Institute of Standards and Technology Chemistry WebBook http://webbook.nist.gov/chemistry/

American Chemical Society Chemical Abstracts Service (CAS) Registry http://www.cas.org/content/chemical-substances

Disclaimer: Use this converter at your own risk. SKC Inc stives to ensure the acuracy of its data however SKC Inc makes no warranties to that effect, and SKC Inc shall not be liable for any damage that may result from use of this converter. For more information on our terms and conditions see http://www.skcinc.com/terms.asp