Free tool

Water hardness calculator.

Three sliders. See exactly how much softener your home needs, what you'll spend on salt each month, and whether a system makes sense before anyone tries to sell you one.

Your home needs a 32,000-grain (standard family) softener

Capacity: 26,000grains
Salt / month: 28.3lb
Salt cost / mo: $10

What this means

4 people using about 300 gallons a day with 12 gpg water means your resin removes 3,600 grains every day. We size for a regen roughly every 7 days (about 4.3 per month). Expect to refill the brine tank with roughly 28.3 lb of salt a month at about $10 retail.

Estimates use WQA / NSF standards and Gulf-Coast retail salt pricing. Real numbers depend on actual usage, iron content, and your softener's efficiency mode.

Get the right softener installed Free water test if you don't know your hardness

Estimates use 75 gallons/day per person (WQA residential standard), 0.25 lb salt per 1,000 grains of capacity (NSF/ANSI 44 efficient floor), and 0.35 USD/lb retail salt (Lowes/Home Depot Gulf-Coast spot-check, May 2026). Real bills vary with iron load, usage, and softener efficiency mode.

Numbers from a local installer, not a national chain.

Water Filtration 1 sizes softeners every week across Mobile and Baldwin County. The calculator uses the same WQA and NSF sizing methods our techs use on-site — no inflated capacity quotes to pad the invoice.

Call (251) 292-3888

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Water hardness calculator.

Calculator

Your home needs a 32,000-grain (standard family) softener

Numbers from a local installer, not a national chain.

Get the softener that gets you there.

Prefer to call?

Water hardness calculator.

Calculator

Your home needs a 32,000-grain (standard family) softener

Numbers from a local installer, not a national chain.

Get the softener that gets you there.

Prefer to call?