HARDNESS CONVERSION CALCULATOR
    Units for Hardness are very confusing. Some books speak about German degree, other ones about ppm and scientific sources reflect MilliEquivalent per liter!

    In order to help you understand here is our conversion table calculator.
    1. Test the water for hardness - determine the units of measurement.
    2. Enter the results in the approriate unit location on the chart.
    3. Click convert to calculate, and all conversions generally used will be returned.

    GH/KH
    RESULTS

                   
    UNITS mg/L ppm dH (gH) Clark H fH Hardness mEq/L
    mg/L              
    ppm              
    dH (gH)              
    Clark H              
    fH              
    Hardness              
    mEq/L              



    Unit : Definitions of Units
    mg/L : Milligramme per Liter
    ppm : Parts per Million
    dH (gH) : German Degree of Hardness
    Clark H : United Kingdom Degree of Hardness
    fH : French Degree of Hardness
    Hardness : American Degree of Hardness
    mEq/L : milliEquivalent per Liter (scientific unit)