Dew Point Calculator for Trace Moisture Measurement

Shaw Moisture Meters dew point calculator is a free online tool for dew point calculation and conversion of your trace moisture measurement units. Enabling you to convert your calculations of trace moisture levels at different pressures.

Shaw Dew Point Calculator

Accurately measure the dew point of a range of substances with the Shaw online Dew Point calculator.


Please enter a number in either one of the two dewpoint values, selecting appropriate units, or one of the four absolute values before pressing the calculate button. 'Line Pressure' and 'Gas Type' are only required as inputs if the 'dewpoint at line pressure' or 'ppm(w)' are to be used/calculated.

PLEASE NOTE: Whilst every effort has been made by Shaw Moisture Meters to ensure that the calculations derived by the moisture calculator are correct, it assumes no responsibility for any errors. In no event shall Shaw Moisture Meters be liable for any damages whatsoever, arising from or relating to information contained in this site.

Gas Type
Dewpoint Observed
Absolute Values
  • ppm(v)
  • ppm(w)
  • g/m³
  • lb/ MMSCF

Shaw Moisture Meters design and manufacture a range of dewpoint instruments for industrial and commercial applications. The range includes: dew point meters, portable dewpoint hygrometers, hand held hygrometers, moisture analysers, dew point sensors and dew point transmitters. All of which are suitable for the measurement of trace moisture in gases and dry compressed air.

For advice choosing the right product for your application, please contact: +44 (0) 1274 733582 or

Please Note: Shaw Moisture Meters make every effort to ensure the formulae used in this dew point calculator are correct. However, Shaw Moisture Meters provide this online calculator free of charge and ‘as-is’, without warranty or guarantee. In no event shall Shaw Moisture Meters be liable for any damages arising from or relating to information contained on this site.