Recipe Chart
Example Data Table
| Style | Batch | Grain | Hops | OG | IBU | ABV |
|---|---|---|---|---|---|---|
| Pale Ale | 20 L | 5.0 kg | 50 g | 1.055 | 38 | 5.6% |
| Stout | 19 L | 5.8 kg | 42 g | 1.064 | 32 | 6.2% |
| Wheat Beer | 21 L | 4.6 kg | 25 g | 1.048 | 18 | 4.9% |
Formula Used
Original gravity: 1 + gravity points / 1000.
Gravity points: grain weight × grain potential × efficiency ÷ batch gallons.
Final gravity: 1 + remaining gravity points after yeast attenuation.
Alcohol: ABV = (OG − FG) × 131.25.
Bitterness: IBU uses hop weight, alpha acid, utilization, and volume.
Priming sugar: batch liters × 6.5 grams for a simple bottling estimate.
How to Use This Calculator
Enter your batch size, grain weight, hop amount, alpha acid, boil time, and yeast attenuation. Press calculate. The result appears above the form. Review gravity, alcohol, bitterness, color, and priming sugar. Adjust ingredients until the recipe fits your target style.
Home Brewing Recipe Planning Guide
Build a Clear Recipe
A strong home brewing recipe starts with balance. Malt gives sugar, body, and color. Hops add bitterness, aroma, and freshness. Yeast turns sugar into alcohol and flavor. Water volume controls strength. This calculator brings those parts together in one simple page.
Understand Gravity
Original gravity shows how much sugar exists before fermentation. A higher number usually means a stronger beer. Final gravity shows what remains after fermentation. The gap between both numbers gives the alcohol estimate. This helps you design light, medium, or strong beer.
Control Bitterness
Bitterness depends on hop weight, alpha acid, boil time, and wort strength. Longer boils usually increase bitterness. Late hops add more aroma than bitterness. Use the IBU result as a guide. Then compare it with your target style.
Estimate Color
Color comes mainly from malt. Pale malt gives a bright beer. Crystal malt adds amber tones. Roasted malt creates brown or black beer. The SRM estimate helps you plan appearance before brew day.
Plan Fermentation
Yeast attenuation affects final gravity and alcohol. High attenuation creates a drier beer. Low attenuation leaves more sweetness and body. Fermentation temperature also matters. Keep it stable for cleaner flavor.
Package Better
Priming sugar creates carbonation in bottles. Too little sugar makes flat beer. Too much sugar may cause over-carbonation. The estimate here gives a practical starting point. Always follow safe bottling practices.
FAQs
What does OG mean?
OG means original gravity. It estimates sugar in the wort before fermentation begins.
What does FG mean?
FG means final gravity. It estimates sugar left after yeast finishes fermentation.
How is ABV calculated?
ABV is calculated from the difference between original gravity and final gravity.
What is IBU?
IBU means International Bitterness Units. It estimates beer bitterness from hops.
Can I use this for any beer style?
Yes. You can use it for ales, lagers, stouts, wheat beers, and custom recipes.
Is priming sugar exact?
It is an estimate. Adjust it for beer temperature, carbonation target, and packaging method.
Why does efficiency matter?
Efficiency shows how well your mash extracts fermentable sugar from grain.
Can this replace lab testing?
No. Use a hydrometer or refractometer for actual brewing measurements.