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Brewing salt ion-addition calculator

Estimate calcium, sulfate, chloride and sodium added by weighed gypsum, calcium chloride and sodium chloride.

BrewMyBeer editorial · Sources checked 24 September 2026 · Calculated examples, not laboratory measurements. How we create content

Interactive tool

Calculate your batch

Change the example values. Inputs stay in your browser.

Use total liquor receiving these additions.

Use a weighed addition, not a spoon estimate.

This assumes the common dihydrate form.

Do not use this calculation to set a water-safety limit.

Use comparable measurements

Enter values measured at the same process stage and in the units shown. A calculation is only as reliable as its measurements and assumptions.

The displayed working makes each assumption visible. Record the inputs with the batch so a later result can be checked or improved.

Treat the result as a decision aid

Use the result to plan or compare a batch, then verify the relevant measurement on your own equipment. It is not a laboratory result, safety guarantee or package specification.

Before you use the result

  • Use the units printed beside each input.
  • Keep a record of the actual measurements.
  • Check equipment limits and process safety separately.

A quick learning check

What should you save with a calculator result?

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Sources & further reading

These references explain the methods and limitations. The worked examples and learning questions on this page are BrewMyBeer calculations, not claims of hands-on testing.