Extract Brew Planning Guide
An extract brew calculator helps brewers plan batches before heat starts. It converts malt extract, sugars, steeping grain, volume, and attenuation into useful brewing numbers. These numbers include original gravity, final gravity, alcohol, color, bitterness balance, calories, and ingredient cost.
Extract brewing is simple, but small changes matter. One extra pound of dry extract can raise gravity a lot. A larger final volume can thin the same recipe. Late extract additions can also change the gravity inside the kettle. That matters when judging hop use and boil strength.
Use this tool when building a new recipe. Enter liquid malt extract, dry malt extract, sugar, and steeping grain. Then enter the batch volume and boil volume. The calculator uses potential points per pound per gallon. It adds the fermentable points together. It then spreads those points across the final batch volume.
The calculator also estimates final gravity from yeast attenuation. Higher attenuation means more sugar becomes alcohol. Lower attenuation leaves more body and sweetness. The alcohol estimate is based on the difference between original and final gravity.
Color is estimated with the Morey method. This is useful for planning amber, brown, porter, or stout recipes. It is still an estimate because real extract color changes with age and boil length.
The bitterness balance uses the BU to GU ratio. This compares target bitterness with gravity points. A low number tastes softer. A higher number may taste sharper and more bitter.
Cost fields help with budget planning. You can compare liquid extract, dry extract, sugar, and steeped grain. This is helpful when changing brands or package sizes.
For best results, measure final volume carefully. Use fresh extract when possible. Store dry extract away from moisture. Keep notes after brew day. Compare measured gravity with the estimate. Over time, your numbers will match your equipment better.
This page is not a replacement for a hydrometer or refractometer. It is a planning guide. Record real readings after cooling the wort. Record fermentation temperature too. Yeast health, oxygen, and pitch rate can change the result. Clean data makes every later batch easier to adjust. You can export the report and keep it with your brew log. That habit improves repeatability and reduces surprises over time.