Oenology Tools
Browse all available oenology tools.
Available tools
- Acid Blend Tartaric Addition Calculator Calculate the tartaric acid grams needed to raise must or wine titratable acidity to the target.
- Alcohol Adjustment Water Blend Volume Calculator Size the watering-back addition that lowers a lot from its current alcohol to the target while conserving total ethanol.
- Ascorbic Acid Complement Dose Calculator Convert a user-selected ascorbic-acid treatment rate in milligrams per liter into total grams for a wine lot; determine the rate from an appropriate treatment plan rather than this arithmetic tool.
- Barrel Angel's Share Loss Calculator Project cumulative barrel-aging evaporation from an annual percentage loss, compounding the loss against the remaining wine for fractional or multiple years.
- Barrel Cellar Humidity Evaporation Factor Calculator Apply a user-calibrated linear humidity sensitivity to a base evaporation allowance; the tool does not assume a universal relationship between cellar humidity and barrel loss.
- Barrel Extraction Equivalent Days Calculator Convert actual oak contact time into new-barrel-equivalent days using a relative extraction percentage obtained from the barrel program, trials, or another calibrated model.
- Barrel Topping Volume Calculator Plan the topping wine needed for a barrel group over the coming interval.
- Baumé to Brix Converter Estimate degrees Brix from degrees Baumé with the simple Brix ≈ 1.8 × Baumé winemaking approximation; exact relationships depend on the Baumé scale and measurement conditions.
- Bentonite Fining Dose Calculator Convert a bench-trial or treatment-plan bentonite rate in grams per liter into kilograms of dry bentonite for the selected wine volume.
- Blending Pearson Square Calculator Solve the Pearson square for the proportional parts of two wines needed to hit an intermediate value such as alcohol or Brix.
- Blind Tasting Varietal Call Scorer Score exact varietal calls and aggregate partial credit against a caller-defined number of points per wine, then report both total points and percentage of the possible score.
- Bottle Fill Height Check Check a measured ullage against the fill height band for the bottle format in millimeters of headspace.
- Bottle Headspace Oxygen Inventory Calculator Calculate the gaseous oxygen inventory in a headspace from its volume, oxygen fraction, and oxygen density; this is not a prediction that all headspace oxygen will dissolve into the wine.
- Bottles per Barrel Calculator Translate barrel inventory into bottle counts at the chosen bottle format.
- Brettanomyces 4-EP Risk Checker Classify measured 4-ethylphenol against caller-supplied noticeable and high thresholds; sensory response varies with wine matrix, other volatile phenols, and the assessor.
- Brix to Specific Gravity Converter Estimate solution specific gravity from degrees Brix with an empirical brewing and winemaking conversion; temperature, dissolved non-sugars, and alcohol can make measured must or wine differ.
- By-the-Glass Cost Recovery Calculator Count the whole by-the-glass sales whose gross menu revenue reaches the bottle cost; this simple recovery point excludes tax, service, waste, and other variable costs.
- Calcium Carbonate Dose Calculator Estimate calcium carbonate mass from wine volume and intended titratable-acidity reduction using 0.67 grams CaCO3 per liter for each 1 g/L reduction; confirm treatment limits and results with trials and analysis.
- Calibrated Glycerol Estimate from ABV Calculator Create a scenario estimate by multiplying ABV by a caller-supplied glycerol-per-ABV factor calibrated for the fermentation; ABV alone cannot determine glycerol concentration.
- Casein Fining Dose Calculator Convert a bench-trial or treatment-plan casein rate in grams per hectoliter into total product mass for a wine lot; this calculator does not select an effective dose.
- Cases per Tank Volume Calculator Convert available tank volume into exact case equivalents and completely fillable cases at the selected bottle volume and case pack, before filling losses are deducted.
- Cellar Capacity Bottle Storage Planner Plan private cellar storage from rack geometry and show how full the space currently runs.
- Chaptalization Sugar Requirement Calculator Estimate sucrose needed to raise must from measured Brix to a target potential alcohol using 0.59% potential ABV per °Bx and 10 g/L sugar per added °Bx; volume change and non-sugar extract are ignored.
- Charcoal Color Fix Dose Calculator Convert a selected activated-charcoal treatment rate into total mass and compare it with a caller-supplied product, trial, or regulatory limit.
- Citric Acid Addition Cap Checker Compare a proposed citric-acid addition with a caller-supplied cellar or regulatory cap and report the amount over that limit.
- CMC Stability Dose Calculator Convert a product specification or treatment-plan carboxymethylcellulose rate into total grams for the selected wine volume; it does not determine tartrate stability or select a dose.
- Cold Stabilization Chill Requirement Calculator Estimate the heat that must be removed to pull a wine lot down for cold stabilization from its mass and heat capacity; divide by the chiller's coefficient of performance to get electrical energy.
- Cork Diameter Fit Checker Calculate diametral cork compression in a bottle bore and compare it with caller-supplied minimum and maximum limits from the closure and bottle specifications.
- Cork Preparation Batch Time Planner Calculate total sequential processing time when a closure supplier explicitly requires cork preparation in multiple batches; use the supplier's instructions because many modern closures must not be soaked.
- Cork Taint TCA Incidence Probability Calculator Estimate the chance of hitting at least one corked bottle in a case given the industry taint rate.
- DAP Nitrogen Contribution Calculator Convert a diammonium phosphate dose into its yeast assimilable nitrogen contribution.
- Davis Score Card Tasting Points Calculator Total the ten categories of the 20-point UC Davis wine scorecard and map the result to the commonly used superior, standard, below-standard, or unacceptable bands.
- Deacidification Carbonate Dose Calculator Size a carbonate addition for a desired titratable acidity reduction using the carbonate's neutralizing factor.
- Decanting Time by Style Calculator Select a planned decanting time by wine condition using caller-supplied service guidelines; bottle age, condition, and tasting observations still determine whether decanting is appropriate.
- Diacetyl Threshold Butter Note Checker Compare a measured diacetyl concentration with a caller-supplied sensory or process threshold and report the excess; perception depends on the wine matrix and assessor.
- Dissolved Oxygen at Bottling Checker Compare the filler dissolved oxygen reading against the cellar's bottling specification.
- Egg White Fining Dose Calculator Convert a bench-trial egg-white rate per reference barrel into an exact equivalent and a rounded-up whole-egg count for the selected wine volume.
- Ethyl Acetate Aroma Threshold Checker Compare measured ethyl acetate with a caller-supplied sensory or process threshold; perceived character and threshold vary with concentration, wine matrix, and assessor.
- Fermentation Completion ABV Estimator Estimate alcohol by volume from original and final specific gravity using ABV ≈ (starting SG − finishing SG) × 131.25; the shortcut is not a laboratory alcohol measurement.
- Fermentation Heat Exposure Degree-Hours Calculator Calculate temperature-exposure degree-hours above a caller-selected critical temperature; the index quantifies exposure but does not independently predict yeast injury.
- Food Pairing Match Score Calculator Calculate Jaccard similarity between food and wine attribute sets: shared attributes divided by all distinct attributes across both profiles.
- Fructose-Glucose Ratio Checker Calculate the fructose-to-glucose ratio and compare it with caller-selected watch and fructose-dominant thresholds; the ratio alone does not diagnose a stuck fermentation.
- Gelatin-Silica Gel Pairing Dose Calculator Convert caller-selected gelatin and silica-gel pairing rates into total product quantities for a wine lot; product concentration and treatment rates must come from trials or supplier instructions.
- Glass Pour Portion Count Calculator Divide a bottle into tasting or restaurant pour sizes to see how many glasses it yields.
- Gross Lees Volume Estimate Calculator Estimate gross-lees volume as a uniform cylindrical layer across a flat circular vessel floor; sloped, conical, dished, or irregular bottoms require their own geometry.
- H2O2 SO2 Reduction Dose Calculator Calculate the theoretical hydrogen-peroxide solution volume for a 1:1 molar reaction with a specified SO2 mass; actual wine treatment requires controlled trials, analysis, and regulatory review.
- Hydrogen Sulfide Copper Sulfate Trial Dose Calculator Compute the theoretical stoichiometric copper sulfate trial dose for a measured hydrogen sulfide level; bench trials should start well below it.
- Isinglass Fining Dose Calculator Convert a bench-trial or supplier-specified isinglass rate into total product mass for the selected wine volume; it does not determine clarification performance.
- KMBS Grams for Target ppm Calculator Calculate theoretical potassium-metabisulfite mass for a requested SO2 addition from the product's stated SO2 content; binding means the measured free-SO2 increase may be lower.
- KMW to Brix Converter Convert Austrian Klosterneuburger Mostwaage to sucrose mass percent using the statutory definition 1 °KMW = 20/17 mass-percent sucrose, reported as approximate °Bx.
- Lees Stirring Interval Planner Spread a chosen number of lees-stirring sessions evenly across an explicitly supplied planning period and return the interval between sessions.
- Lightstrike Risk UV Exposure Checker Convert exposure duration and measured bottle transmission into equivalent unfiltered light-hours, then compare that value with caller-supplied lightstrike thresholds.
- Malic Acid Addition Calculator Calculate theoretical malic-acid mass for a desired TA increase reported as tartaric-acid equivalents, using the equivalent-weight ratio 67.04/75.05; confirm the post-addition TA analytically.
- Metatartaric Acid Dose Calculator Convert a supplier-specified or treatment-plan metatartaric-acid rate into total product mass for the selected wine volume; the tool does not determine stability or persistence.
- Micro-Oxygenation Rate mL/L/month Calculator Express a micro-oxygenation dose as milliliters of oxygen per liter of wine per month.
- MLF Inoculation Rate Calculator Convert the manufacturer-specified mass rate for a particular malolactic culture into total product mass for the selected wine volume.
- Molecular SO2 from Free SO2 Calculator Convert free sulfur dioxide to active molecular SO2 at the wine pH using the bisulfite pKa.
- Multi-Tank Volume Weighted ABV Calculator Compute the volume-weighted alcohol of a blend across any number of tanks.
- Native Fermentation Risk Score Calculator Apply a caller-defined linear scoring model to free SO2 above a baseline and temperature below a baseline; this configurable heuristic is not a microbiological prediction.
- Oak Chip Dosage Rate Calculator Weigh the oak chips needed for a lot at the chosen grams-per-liter dosage rate.
- Oak Stave Surface Area Calculator Compute the total area of all six faces of a fully submerged rectangular oak stave; subtract covered or unwetted faces when the mounting blocks wine contact.
- Oechsle to Brix Converter Convert German Oechsle degrees to approximate degrees Brix through the equivalent specific gravity.
- Phenolic Ripeness Seed Tannin Index Checker Judge seed maturity by comparing the brown-seed tannin index against the block's ripeness threshold.
- Potassium Bicarbonate Dose Calculator Estimate potassium bicarbonate mass from volume, intended titratable-acidity reduction, and a caller-selected treatment factor appropriate to the protocol and reporting basis.
- Potential Alcohol from Brix Calculator Estimate potential alcohol from Brix using a caller-selected conversion factor appropriate to the fermentation assumptions; residual sugar and conversion efficiency can change actual ABV.
- Potential Alcohol from SG Calculator Convert must specific gravity to approximate Brix and then potential alcohol with a caller-selected ABV-per-Brix factor; residual sugar and fermentation efficiency can change actual ABV.
- Protein Stability Bentotest Checker Judge a Bentotest heat trial by comparing the turbidity increase against the stability threshold.
- PVPP Dose Calculator Calculate the PVPP grams needed to bind browning phenolics in a treated lot.
- Racking Loss Percentage Calculator Express the volume left behind on lees as a percentage of the original lot during a racking.
- Red Wine Polymeric Pigment Index Checker Compare a polymeric-pigment assay result with a caller-selected threshold; crossing the threshold does not by itself establish long-term color stability.
- Restaurant Markup Price Calculator Apply the house markup multiple to a bottle's wholesale cost for the wine list price.
- RS g/L from Dosing Sugar Calculator Convert a weighed sugar addition into the residual sugar it contributes per liter.
- Screwcap Torque Spec Lookup Look up the typical consumer removal torque band midpoint for a standard screwcap diameter.
- Serving Temperature Guide Lookup Look up the cellar-guide serving temperature midpoint for a wine style.
- Shelf Life DO Threshold Predictor Project the months of shelf life left before packaged wine consumes its oxygen budget at the observed pickup rate.
- Simple ABV from SG Drop Calculator Estimate alcohol by volume from the specific-gravity drop using ABV ≈ gravity drop × 131.25; this common fermentation shortcut is not a laboratory alcohol measurement.
- SO2 Addition mL per hL Calculator Convert a desired SO2 increase into milliliters of sulfur solution per hectoliter of wine.
- Specific Gravity to Brix Converter Convert a hydrometer specific gravity reading to dissolved sugar in degrees Brix.
- Standard Drink Units Calculator Convert a poured glass into standard drink units from its ethanol content.
- Starter Culture Pitch Rate Calculator Scale a yeast starter from the must volume using a percentage pitch rate.
- Stuck Fermentation Residual Sugar Flag Flag a likely stuck or stalled fermentation when residual sugar stays above the cellar threshold while gravity remains above dryness.
- Sugar Addition kg per hL Calculator Express a Brix adjustment as cane sugar kilograms per hectoliter of must.
- Sussreserve Preservation SO2 Uplift Calculator Compute how blending in sweet reserve juice moves the free sulfur dioxide of the finished blend.
- Sweetening Reserve Volume Calculator Solve the sweetening reserve volume that lifts a dry lot to the target residual sugar by sugar mass balance.
- TA Titration Volume to g/L Calculator Convert a sodium hydroxide titration volume to titratable acidity in grams per liter expressed as tartaric acid.
- Tannin Addition Dose Calculator Calculate the enological tannin grams needed to structure or protect a treated lot.
- Target Free SO2 Dose Calculator Calculate the equilibrium free-SO2 level corresponding to a caller-selected molecular SO2 target at the measured pH and the shortfall from current free SO2; actual additive dose must account for binding.
- Tartrate Saturation Temperature Calculator Evaluate a configurable linear cellar screening model for tartrate saturation temperature. Coefficients must be calibrated against conductivity tests for the wine style and laboratory method.
- Total Package Oxygen Calculator Add dissolved oxygen at the filler to the headspace contribution for the total package oxygen of a sealed bottle.
- Two-Wine ABV Blend Result Calculator Compute the alcohol by volume of blending two wines from their volumes and strengths.
- Volatile Acidity VA Threshold Checker Check volatile acidity against the general United States limits of 1.4 grams per liter for red wine and 1.2 grams per liter for white or rosé wine, expressed as acetic acid.
- Wine Color Density and Hue Calculator Calculate the conventional two-wavelength wine color density (A420 + A520) and hue ratio (A420/A520); these optical indices do not directly measure anthocyanin concentration.
- Wine Color Hue Ratio Calculator Compute the conventional red-wine hue ratio A420/A520 from spectrophotometer absorbances; despite the legacy route name, the result is a dimensionless ratio rather than an angle.
- Wine Drinking Window Calendar Calculator Turn an externally assessed years-to-peak estimate and peak-window duration into calendar years; the calculator performs scheduling arithmetic rather than predicting wine development.
- Wine pH and TA Range Checker Compare measured pH and titratable acidity independently with caller-supplied ranges; the result is a specification check, not a sensory balance judgment.
- Wine Structural Age-Worthiness Score Calculator Average three user-assigned zero-to-ten ratings for acidity, body, and tannin into a structural aging score; it does not predict development, faults, closure performance, or drinking window.
- YAN Requirement Calculator Estimate a YAN target from must sugar and a selectable milligrams-per-liter-per-Brix planning factor. Adjust the factor for yeast strain, fermentation rate, and wine style.
- Yeast Inoculation Rate g/hL Calculator Express the pitched dry yeast mass as an inoculation rate in grams per hectoliter of must.
- Yeast Nutrient Grams per hL Calculator Convert a yeast-assimilable-nitrogen gap into nutrient grams per hectoliter using the measured or manufacturer-stated YAN contribution for the exact nutrient product.
- Yeast Rehydration Water Volume Calculator Size the warm water volume for rehydrating active dry yeast at the chosen milliliter-per-gram ratio.