When reading my local water summery, all values are given in mg/L. I'd like to utilize "EZ Water Calculator Spreadsheet" (see link below): http://ezwatercalculator.com/ Does anybody have a simply method of converting from mg/L to ppm or are the units interchangeable? Many thanks.
PPM and Mg/L are the same. I'd encourage you to try our own Mash Chemistry and Brew Water Calculator: http://www.brewersfriend.com/mash-chemi ... alculator/
PPM is simply Mg/l divided by the specific gravity. For drinking water(s) the gravity should be 1.000 which makes them the same.
I think you mean ppg... ppm = parts per million, and it is the same as mg/l when it comes to brewing ions like Calcium, Sodium, etc. Gravity does not factor into ppm.