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Water Softener Size Calculator

Need to find out the size or capacity of a water softener for your home? Use the calculator below and get a rough idea on the grain capacity required to sufficiently soften your water.

Select the number of people that live in your home. By default, the average water usage per person is set at a conservative 50 gallons per day. If you think your daily water usage is higher, set a higher value.

Water Softener Size Calculator

If you don’t know your water hardness, check the box below and have the calculator roughly estimate your water hardness for your city.

I don't know my water hardness.
# of PeopleWater Usage per PersonWater Hardness
Water Softener Size in Grains Capacity: