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Free tools

Water treatment calculators

Size equipment before you shop. Each tool shows its formula, so you can check the math against your own water test.

Water Hardness ConverterTurn ppm into grains per gallon, read which hardness band you are in, and find your own number.Open calculator

Water Softener Size CalculatorEnter people, water use, hardness and iron to see the grains your softener must hold.Open calculator

Whole House Filter Flow Rate CalculatorEstimate your peak water demand in GPM from the showers, faucets and washer running at once.Open calculator