Water Hardness Calculator

Calculates the hardness of water from the mineral contents of water.

Mineral content is displayed on the water bottles commercially available.
Water Hardness
Calcium content Ca2+
Magnesium content Mg2+

Hardness
    1.  
    2. mg/L
    3. of CaCO3
=
    1.  
    2. grain/gallon
Indication
    1.  
The water hardness is using American degree equivalent to mg/L.
Water hardness(mg/L)=Ca(mg/L)×2.497 + Mg(mg/L)×4.118

Classification of hard water and soft water is based on WQA (Water Quality Asociation).

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    Water Hardness
    [1-10] /13Disp-Num
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    [1]  2019/01/07 23:13   Male / 50 years old level / Others / Very /
    Purpose of use
    calculate hardness of water to help a citizen
    [2]  2018/10/12 11:01   Male / 50 years old level / High-school/ University/ Grad student / Useful /
    Purpose of use
    Water softener setting....
    [3]  2018/06/16 02:25   Male / 60 years old level or over / An engineer / Very /
    Purpose of use
    Design of a process
    [4]  2017/03/02 05:40   Female / 50 years old level / Others / Very /
    Purpose of use
    To calculate farm well-water hardness from mineral analysis done on the water to aid in determining buffering needs for herbicide applications.
    [5]  2017/03/01 18:27   Male / 40 years old level / Self-employed people / Very /
    Purpose of use
    Mg (mg/l)x4.118
    Comment/Request
    4.118 means
    [6]  2017/02/01 05:31   - / 60 years old level or over / An engineer / Very /
    Purpose of use
    help me very goodly solve for hard on of water. Much useful... much graces
    Comment/Request
    must solve for equivilance if any use is good. Much work be needed to solve issue. Wanted in normals not massses
    [7]  2016/05/24 16:47   Male / 20 years old level / An engineer / Useful /
    Purpose of use
    Quick hardness calculations. I work in water treatment
    [8]  2015/07/05 23:35   Female / 20 years old level / Others / Very /
    Purpose of use
    i am working in water compony so need to hardnees of water.
    [9]  2015/07/02 00:56   Male / 30 years old level / An engineer / Very /
    Purpose of use
    Calculating residential water hardness from quality report
    [10]  2015/04/08 04:51   Male / 60 years old level or over / A retired people / Not at All /
    Purpose of use
    To set the water softner in my home.

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