EfWConvert is an iPhone app that makes emission conversions simple.  

Do you need to convert ppm of CO at 7% Oxygen into mg/Nm3 at 11% Oxygen?  

EfWConvert makes it easy.  It works with common gases including

  • CO
  • NO2 
  • SO2 
  • HCl 
  • HBr 
  • NH3
  • CH4


Available units include:

  • US standard ppm at 7% O2
  • EU standard mg/Nm3 at 11% O2
  • Canadian standard mg/Rm3 at 11% O2 
    • 25 deg C in Ontario 
    • 20 deg C in British Columbia

EfWConvert also has a built-in convertor for common engineering applications in the industry, including

  • pressure
  • volumetric flow
  • mass flow
  • air flow
  • density
  • temperature
  • length
  • area
  • volume