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This calculator calculates mash efficiency for complex grain bills that include specialty malts. Malt extract and sugar are calculated separately at 100% efficiency. The mash efficiency then is calculated from the wort not containing malt extract and sugar.
Mash efficiency % = ((Obtained gravity points - Sugar and malt extract points) / Malt theoretical gravity points) * 100
The components of the grain bill are also expressed as percentages by weight and percentages by theoretical gravity points.
The calculations assume that all weights are expressed as pounds, not ounces and not metric units.
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