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+

    2. mg/L
    3. of CaCO3
    2. grain/gallon
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] /16Disp-Num
[1]  2020/03/10 02:49   Male / 40 years old level / A teacher / A researcher / Very /
Purpose of use
Assess the specifications of a RO system with remineralization.
Please also add other minerals like Na+, K+ and the alkalinity / pH calculation.
Thank you!
[2]  2019/10/11 02:43   Male / 20 years old level / High-school/ University/ Grad student / A little /
Purpose of use
Trying to understand how hardness is calculated for an environmental engineering course
[3]  2019/07/15 11:16   Male / 20 years old level / Elementary school/ Junior high-school student / Very /
Purpose of use
make solution
[4]  2019/01/07 23:13   Male / 50 years old level / Others / Very /
Purpose of use
calculate hardness of water to help a citizen
[5]  2018/10/12 11:01   Male / 50 years old level / High-school/ University/ Grad student / Useful /
Purpose of use
Water softener setting....
[6]  2018/06/16 02:25   Male / 60 years old level or over / An engineer / Very /
Purpose of use
Design of a process
[7]  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.
[8]  2017/03/01 18:27   Male / 40 years old level / Self-employed people / Very /
Purpose of use
Mg (mg/l)x4.118
4.118 means
[9]  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
must solve for equivilance if any use is good. Much work be needed to solve issue. Wanted in normals not massses
[10]  2016/05/24 16:47   Male / 20 years old level / An engineer / Useful /
Purpose of use
Quick hardness calculations. I work in water treatment


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