Free tool
Mash Bill Scaler
Scale a mashbill from percentages to pounds for any batch. Enter your grain percentages and the total grain weight to get the pounds of each grain. Percentages should add up to 100.
The formula
grain lbs = total batch lbs x (grain percent / 100)
Bourbon must be at least 51% corn by mashbill (27 CFR 5.143). This tool uses the same calculation as the Spirit Sight platform. It is general information, not tax or legal advice.
How do I scale a mashbill to my batch size?
Multiply the total grain weight by each grain percentage divided by 100. For a 1,000 lb batch at 70% corn, that is 700 lb of corn.
Do the percentages have to add up to 100?
Yes. If they do not, the calculator flags it so you can correct the recipe before scaling.
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