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Calculators

Water softeners

• Water Softener Size Calculator · Grains you need from your household and hardness, at your real salt setting.
• Water Softener Cost Calculator · Unit, install, salt and service, with a 10-year total and a quote check.
• Water Softener Salt Calculator · Pounds per month, bags per year and yearly cost for your softener.
• Water Hardness Converter · gpg, ppm, mg/L, mmol/L and German or French degrees in one step.

Well water

• Well Pressure Tank Size Calculator · Tank size and pre-charge from your pump's gpm, horsepower and switch setting.

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• About HomeWaterMath · Who runs the site and how the calculators are built.
• How we calculate · The formulas, constants and sources behind every calculator.
• Editorial policy · How we research, build, check and correct the calculators.
• Sikander Mushtaq · Founder of HomeWaterMath. Builds and checks every calculator.
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• Disclaimer · The limits of the estimates these calculators give.
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