Fermentation Tools

Calculators, guides & resources for brewers, bakers, and fermentation enthusiasts

Free Calculators

🍺 ABV Calculator Calculate alcohol by volume from gravity readings (SG or Brix). 🍾 Priming Sugar Calculator Determine the right amount of priming sugar for bottle carbonation. 🍞 Sourdough Hydration Calculator Calculate water, flour, and levain for your target hydration.

Guides & Articles

Advanced Water Chemistry for All-Grain Brewers: Residual Alkalinity, Water Profiles, and Mineral AdjustmentsMaster residual alkalinity, the Kolbach model, mineral additions, acid adjustments, and water profile building for all-grain brewing. Software tools compar11 min read Decoction Mash Technique: Single, Double, and Triple Decoction for Traditional Lagers and AlesMaster single, double, and triple decoction mashing. Learn when decoction improves your beer, how it creates melanoidins, and step-by-step temperature boos9 min read Lager Fermentation Schedule: The Complete Pitch-to-Glass TimelineFollow this complete lager fermentation schedule from pitching to packaging, including diacetyl rest timing, lagering temperature ramps, and clarification 7 min read Mash Temperature Guide: Understanding Enzyme Activity for All-Grain BrewersMaster mash temperatures for all-grain brewing. Understand alpha and beta amylase, step mashing, rest schedules, and how temperature controls beer body and9 min read Sparge Water Calculation Guide: Batch Sparge, Fly Sparge, and No-Sparge MethodsLearn how to calculate sparge water volumes for batch, fly, and no-sparge brewing. Formulas for grain absorption, boil-off, dead space, and pre-boil gravit9 min read Your First All-Grain Brew Day — Complete Walkthrough from Milling to FermenterStep-by-step guide to your first all-grain brew day. Equipment checklist, milling, mashing, sparging, timing, temperatures, and common mistakes to avoid.9 min read Extract Brewing Complete Guide: From Kit to Craft-Quality BeerMaster extract brewing with this complete guide to LME vs DME, steeping specialty grains, partial mash techniques, and late extract additions for better be8 min read Gravity Temperature Correction: Why It Matters and How to Get Accurate Readings Every TimeLearn why temperature affects hydrometer readings, how to apply correction formulas and tables, and avoid common errors in gravity measurement.9 min read Hydrometer Buying Guide: Types, Features, Calibration, and Recommended Models for Every BrewerCompare triple scale, precision, and thermohydrometer models. Learn what to look for, how to calibrate, and which hydrometer fits your brewing needs.10 min read Priming Sugar Calculator: The Complete Guide to Carbonation by Style, Sugar Type, and MethodCalculate exact priming sugar amounts by style. Compare 8 sugar types, learn residual CO2 tables, and master bottle conditioning or force carbonation.10 min read Refractometer Post-Fermentation Correction: Why Raw Brix Readings Are Wrong and How to Fix ThemLearn why refractometer Brix readings are wrong after fermentation and how to apply Terrill and cubic correction formulas for accurate final gravity.9 min read The Complete Guide to ABV Calculators: Formulas, Methods, and Practical ExamplesLearn how ABV calculators work, compare Standard vs Miller formulas, apply Brix corrections, and calculate alcohol for beer, wine, mead, and cider.8 min read Kimchi Fermentation Guide: From Salting to Storage, the Complete Traditional MethodMake authentic kimchi at home with this complete guide to salting napa cabbage, preparing the paste with gochugaru, fermentation timelines, and storage tip8 min read Dry Hopping Techniques: The Complete Guide to Timing, Amounts, and Best PracticesMaster dry hopping with this complete guide to timing, contact time, quantities, biotransformation, oxygen management, and preventing hop creep in your bee7 min read Hop Schedule Optimization Guide: From First Wort to Dry Hop, Master Every AdditionOptimize your hop schedule with first wort hopping, timed boil additions, whirlpool techniques, dry hopping strategies, and IBU budgeting methods.10 min read Hop Variety Guide: 40+ Varieties with Alpha Acids, Flavors, Substitutions, and Best UsesExplore 40+ hop varieties with alpha acids, flavor profiles, substitutions, and usage tips organized by region in this complete hop variety reference guide7 min read Kombucha First Brew Guide: From SCOBY to Bottle in Simple StepsBrew your first batch of kombucha at home with this complete guide covering SCOBY care, sweet tea ratios, fermentation stages, flavoring, and bottling.8 min read Belgian Yeast Strain Comparison: A Brewer's Guide to WLP500, WY3787, T-58, and BeyondDetailed comparison of Belgian yeast strains WLP500, WLP530, WLP550, WY1214, WY3522, WY3787, T-58, and BE-256 with flavor profiles and temp tips.8 min read Yeast Health and Viability Guide: Cell Counting, Staining, Storage, and Repitching for BrewersMaster yeast viability testing with methylene blue staining, cell counting with a hemocytometer, proper storage techniques, and repitching best practices.9 min read Yeast Starter Guide for Liquid Yeast: Why Starters Matter and How to Make ThemMake a proper yeast starter for liquid yeast with this guide covering DME ratios, stir plates, step-up starters, viability calculations, and decanting.8 min read Base Malt Comparison Guide: 2-Row vs Pilsner vs Maris Otter vs Munich and MoreCompare base malts including 2-row, 6-row, Pilsner, Maris Otter, Golden Promise, Vienna, and Munich with extract potential, color, flavor, and best styles.9 min read Grain Bill Design Guide: Base Malt Percentages, Specialty Malt Limits, and Recipe ScalingLearn grain bill design principles including base malt percentages, specialty malt limits, adjunct usage, recipe scaling, and efficiency calculations.11 min read Specialty Malt Guide: Crystal, Chocolate, Roasted Barley, Biscuit, Victory, and BeyondComplete guide to specialty malts including Crystal, Chocolate, Black Patent, Roasted Barley, Biscuit, and Victory with usage rates and flavor profiles.8 min read Mead Yeast Selection Guide: 12+ Strains Compared for Alcohol Tolerance, Flavor, and Fermentation SpeedCompare 12+ mead yeast strains including 71B, D47, EC-1118, and QA23 with alcohol tolerance, flavor impact, speed, and nutrient needs for better mead.7 min read TOSNA 3.0 Nutrient Schedule for Mead: Fermaid-O Protocol, Timing & Dosing GuideMaster the TOSNA 3.0 nutrient schedule for mead making. Learn Fermaid-O dosing, staggered addition timing, batch size calculations, and how to spot nutrien10 min read Traditional Mead Making Guide: From Honey Selection to GlassComplete traditional mead making guide covering honey selection, must preparation, TOSNA 3.0 nutrients, yeast choice, degassing, bulk aging, and backsweete10 min read Sourdough Starter: The Complete Guide to Creating, Feeding, and Maintaining Your CultureLearn how to create a sourdough starter from scratch, maintain feeding schedules, adjust hydration levels, and revive neglected starters with this complete8 min read American IPA Recipe Guide: Grain Bill, Hop Schedule, Water Profile & Yeast SelectionComplete American IPA recipe guide covering grain bills, hop schedules, water chemistry, yeast selection, and 3 proven recipes at session, standard, and do9 min read Belgian Tripel Recipe Guide: Pilsner Malt, Candi Sugar, Belgian Yeast & Bottle ConditioningBrew an authentic Belgian Tripel with pilsner malt, candi sugar, Belgian yeast, step-up fermentation, and bottle conditioning techniques for 8-9.5% ABV wit9 min read English Bitter and ESB Recipe Guide: Malt-Forward Session Brewing at Its FinestBrew authentic English Bitter and ESB with Maris Otter, English hops, proper cask conditioning techniques, and low carbonation for true pub character.8 min read German Pilsner Brewing Guide: Pilsner Malt, Noble Hops, Soft Water & Lagering ScheduleMaster German Pilsner brewing with this complete guide covering Pilsner malt, noble hops, soft water, lager yeast, decoction mashing, and a 6-week lagering9 min read NEIPA Recipe Guide: How to Brew the Perfect Hazy IPA From Grain to GlassComplete New England IPA recipe with grain bill ratios, biotransformation dry hopping schedule, water chemistry targets, and London Ale III yeast managemen8 min read Porter Recipe and History Guide: From 18th-Century London to Your Homebrew FermenterExplore Porter history from 1700s London to modern homebrew recipes covering Brown, Robust, and Baltic Porter with chocolate malt techniques.9 min read Stout Varieties Complete Guide: From Dry Irish to Russian Imperial and Everything BetweenCompare Dry, Sweet, Oatmeal, Milk, Imperial, and Foreign Extra Stout styles with grain bills, roasted malt selection, and brewing parameters.8 min read Wheat Beer Styles Guide: Hefeweizen, Witbier, American Wheat, and Berliner Weisse ComparedCompare Hefeweizen, Witbier, American Wheat, and Berliner Weisse brewing techniques including yeast selection, phenol production, and spice additions.8 min read