Grain Bill Calculator — All-Grain & Extract
38|Build your grain bill or extract recipe and instantly see the estimated original gravity (OG), beer color in SRM, and total fermentable weight. Switch between all-grain (default 75% efficiency) and extract (default 95%) modes to match your brewing setup.
39| 40|Fermentables
59| 60|Results
72|How the grain bill calculator works
99|For each fermentable, enter the weight in pounds and its potential gravity points (PPG) — the points-per-pound-per-gallon yield at 100% efficiency. Typical PPG values: 2-row base malt 36–37, Munich 35, Crystal 34, DME 44, LME 36, Honey 35, Corn sugar 46.
100|Estimated OG = (Σ(weight × PPG) × efficiency) ÷ batch size, then converted from gravity points to specific gravity.
101|SRM (color) is calculated using the Morey equation: SRM = 1.4922 × MCU0.6859, where MCU = Σ(grain Lovibond × weight) ÷ batch size.
Common Fermentable Reference
105|| Fermentable | PPG | °L (color) |
|---|---|---|
| 2-Row Pale Malt | 37 | 1.8 |
| Pilsner Malt | 37 | 1.5 |
| Munich Malt | 35 | 10 |
| Vienna Malt | 35 | 4 |
| Wheat Malt | 38 | 2 |
| Crystal 40L | 34 | 40 |
| Crystal 60L | 34 | 60 |
| Crystal 120L | 33 | 120 |
| Chocolate Malt | 28 | 350 |
| Roasted Barley | 25 | 500 |
| Flaked Oats | 33 | 1 |
| Dry Malt Extract (light) | 44 | 4 |
| Liquid Malt Extract (light) | 36 | 4 |
| Honey | 35 | 2 |
| Corn Sugar (dextrose) | 46 | 0 |