All Free Homebrewing Calculators
Browse all 113 free calculators across 16 categories. Every tool is free, works on any device, and requires no signup.
Calculate alcohol content, gravity conversions, attenuation and more for your homebrew.
ABV Calculator
Calculate alcohol by volume from original and final gravity readings.
Original Gravity Calculator
Estimate original gravity from your grain bill and mash efficiency.
Final Gravity Calculator
Estimate final gravity based on OG and yeast attenuation.
Brix to SG Converter
Convert Brix refractometer readings to specific gravity.
Plato to SG Converter
Convert degrees Plato to specific gravity and back.
Attenuation Calculator
Calculate apparent and real attenuation of your fermentation.
Real Extract Calculator
Calculate real extract accounting for alcohol in your finished beer.
Calories Calculator
Estimate calories per pint or per 100ml of your homebrew.
Refractometer Correction Calculator
Correct refractometer readings for alcohol presence during fermentation.
Hydrometer Temperature Correction Calculator
Adjust hydrometer readings for sample temperature differences.
Calculate IBUs, hop utilisation, substitutions and additions for balanced bitterness.
IBU Calculator
Calculate International Bitterness Units using Tinseth or Rager formulas.
Hop Utilisation Calculator
Calculate IBU contribution, utilisation percentage and bittering versus flavour ratio from alpha acid, hop weight, boil time and wort gravity.
Hop Substitution Calculator
Find equivalent hop amounts when substituting varieties.
Dry Hop Calculator
Calculate dry hop amounts based on desired intensity and batch size.
First Wort Hop Calculator
Calculate IBU contribution from first wort hopping additions.
Hop Stand Calculator
Estimate IBU contribution from whirlpool and hop stand additions.
Alpha Acid Calculator
Calculate alpha acid units and adjust hop weights for different AA percentages.
Hop Addition Calculator
Plan multiple hop additions across your boil schedule.
Bittering Ratio Calculator
Calculate BU:GU ratio to assess beer balance between bitterness and malt.
Hop Freshness Calculator
Estimate remaining alpha acid potency based on hop age and storage.
Hop Spider Calculator
Calculate hop spider mesh bag size needed based on hop weight and pellet or leaf format.
Design grain bills, calculate colour, efficiency and extract substitutions.
Grain Bill Calculator
Calculate grain amounts needed for your target OG and batch size.
Mash Efficiency Calculator
Calculate mash efficiency and brewhouse efficiency from grain weight, pre-boil gravity, volume and grain potential PPG.
Extract Substitution Calculator
Convert between all-grain and extract recipes with equivalent amounts.
Colour Calculator
Estimate beer colour in SRM, EBC and Lovibond from your grain bill.
Malt Extract Calculator
Calculate liquid or dry malt extract needed for your target gravity.
Grain Absorption Calculator
Estimate water lost to grain absorption during mashing.
Specialty Malt Calculator
Calculate specialty malt percentages and contributions to your recipe.
Base Malt Calculator
Determine base malt quantity from target OG, batch size and efficiency.
Adjunct Calculator
Calculate adjunct additions like sugar, honey or fruit and their gravity contribution.
Grain Mill Gap Calculator
Find the optimal mill gap setting for your grain type and system.
Calculate strike temperatures, water volumes, chemistry adjustments and mash profiles.
Strike Water Calculator
Calculate strike water temperature for your target mash temperature.
Mash Temperature Calculator
Determine resulting mash temperature from grain and water inputs.
Water Volume Calculator
Calculate total water needed including mash, sparge and losses.
Sparge Water Calculator
Calculate sparge water volume for your batch size and grain bill.
Water Chemistry Calculator
Calculate salt additions for target water chemistry profiles.
pH Adjustment Calculator
Calculate acid or base additions to hit your target mash pH.
Mash Thickness Calculator
Calculate water-to-grain ratio for your desired mash thickness.
Decoction Calculator
Calculate decoction volume needed to raise mash temperature.
Step Mash Calculator
Calculate infusion volumes for multi-step mash schedules.
Water Treatment Calculator
Calculate Campden tablet and other water treatment additions.
Sparge Volume Calculator
Calculate sparge water volume based on grain absorption and target pre-boil volume.
Calculate pitch rates, starters, viability and fermentation parameters for healthy yeast.
Yeast Starter Calculator
Calculate starter size and steps to grow enough yeast cells.
Pitch Rate Calculator
Calculate optimal yeast pitch rate for ales and lagers.
Yeast Viability Calculator
Estimate yeast viability based on production date and storage.
Fermentation Temperature Calculator
Find optimal fermentation temperature ranges for different yeast strains.
Yeast Cell Count Calculator
Calculate total yeast cells needed from OG, volume and pitch rate.
Yeast Propagation Calculator
Plan multi-step propagation to build yeast from a small culture.
Yeast Harvest Calculator
Estimate yeast cell count from harvested slurry volume and density.
Krausen Calculator
Calculate krausen addition volume for natural carbonation.
Starter Step-Up Calculator
Calculate multi-step yeast starter sizes for high-gravity beers.
Yeast Washing Calculator
Calculate water volumes and steps for yeast washing and rinsing from a fermenter.
Calculate priming sugar, forced carbonation pressures, line lengths and serving settings.
Priming Sugar Calculator
Calculate priming sugar amount for bottle conditioning to target CO2 volumes.
Forced Carbonation Calculator
Calculate CO2 pressure needed at your serving temperature.
CO2 Volume Calculator
Look up target CO2 volumes for different beer styles.
Carbonation Chart Calculator
Interactive PSI chart for temperature and CO2 volume combinations.
Keg Pressure Calculator
Calculate serving and carbonation pressures for your keg setup.
Bottle Conditioning Calculator
Calculate conditioning time and priming for bottle carbonation.
Serving Pressure Calculator
Calculate balanced serving pressure for your draught system.
Line Length Calculator
Calculate beer line length for balanced pours at your serving pressure.
Keg Carbonation Calculator
Calculate force carbonation PSI and timing for corny and sankey kegs.
Keg Volume Calculator
Calculate remaining beer in a keg from weight or CO2 usage.
Keg Carbonation Time Calculator
Calculate force carbonation set pressure, equilibrium days and CO2 usage from beer volume, target CO2 volumes and temperature.
Size your brewing equipment, calculate boil-off rates, cooling times and system parameters.
Kettle Size Calculator
Calculate minimum kettle size for your batch with headspace allowance.
Fermenter Size Calculator
Calculate fermenter volume needed including headspace for krausen.
Mash Tun Calculator
Calculate mash tun volume needed for your grain bill and water ratio.
Boil Off Calculator
Calculate boil-off rate and total evaporation for your system.
Dead Space Calculator
Calculate and account for dead space losses in your brewing system.
Cooling Time Calculator
Estimate wort cooling time based on chiller type and water temperature.
Immersion Chiller Calculator
Calculate cooling performance of your immersion chiller setup.
Heat Exchanger Calculator
Calculate plate or counterflow heat exchanger cooling performance.
Pump Flow Calculator
Calculate pump flow rate and recirculation time for your system.
Boil-Off Rate Calculator
Calculate boil-off rate from pre and post boil volumes for recipe planning.
Scale recipes, calculate boil volumes, pre-boil gravity and blend beers.
Recipe Scaling Calculator
Scale a recipe up or down to a different batch size.
Style Guidelines Calculator
Check if your recipe parameters fall within BJCP style guidelines.
Batch Size Calculator
Calculate final batch size accounting for all system losses.
Boil Volume Calculator
Calculate required pre-boil volume for your target batch size.
Pre-Boil Gravity Calculator
Calculate expected pre-boil gravity from post-boil targets.
Post-Boil Volume Calculator
Calculate post-boil volume from pre-boil volume and boil-off rate.
Dilution Calculator
Calculate water additions to dilute wort or beer to a target gravity.
Blending Calculator
Calculate blending ratios and resulting gravity when mixing two beers.
Clone Recipe Calculator
Reverse-engineer a commercial beer recipe from known parameters.
Efficiency Calculator
Calculate brewhouse efficiency from actual vs potential extract.
Brew Day Timer Calculator
Calculate total brew day duration and a step-by-step timeline from mash to fermenter based on your process choices.
Track fermentation timing, plan diacetyl rests, cold crashes and conditioning schedules.
Fermentation Time Calculator
Estimate primary and secondary fermentation duration for your beer.
Diacetyl Rest Calculator
Calculate timing and temperature for a diacetyl rest in lagers.
Cold Crash Calculator
Calculate cold crash timing and temperature for clear beer.
Secondary Fermentation Calculator
Determine if and when to transfer to secondary fermentation.
Bottle Bomb Calculator
Check if your beer is safe to bottle based on gravity readings.
Lag Time Calculator
Estimate yeast lag time based on pitch rate, temperature and viability.
Temperature Control Calculator
Calculate heating or cooling needs for fermentation temperature control.
Fermentation Log Calculator
Track and analyse gravity readings over your fermentation period.
Fermentation Curve Tracker
Predict fermentation progress and estimate current gravity from days since pitch.
Calculate bottles needed, keg fills, sanitiser amounts and packaging supplies.
Bottle Calculator
Calculate number of bottles needed for your batch size.
Keg Calculator
Calculate how many kegs you need and remaining volume.
Label Size Calculator
Calculate label dimensions for different bottle and container sizes.
Cap Calculator
Calculate bottle caps or crown seals needed including spares.
Sanitiser Calculator
Calculate sanitiser solution concentration for your equipment volume.
Shelf Life Calculator
Estimate homebrew shelf life based on ABV, style and storage conditions.
Bottle Cage Calculator
Calculate bottle crate and cage requirements for storage.
Growler Fill Calculator
Calculate growler fills from your keg and track remaining volume.
Plan multi-step mash schedules, strike temperatures and timing for complex mash profiles.
Analyse recipe costs, ingredient breakdowns and batch economics for your homebrew.
Calculate bottle counts, caps, priming sugar, labels and case boxes for packaging your homebrew.
Calculate brewing costs, parti-gyle splits and recipe economics for your homebrew.
Cost Per Pint Calculator
Calculate total batch cost, cost per pint, cost per 330ml can and savings versus pub prices.
Parti-Gyle Calculator
Calculate first and second runnings gravity and volumes for parti-gyle brewing from a single mash.
Grain Bill Percentage Calculator
Calculate individual grain weights from percentage targets and total grain bill.
SMaSH Beer Calculator
Calculate grain and hop amounts for a Single Malt And Single Hop recipe from target OG and IBU.
Estimate mash pH, water adjustments and chemistry calculations for your brew water.
Useful homebrewing reference guides, conversion tables and style data.
Beer Style Guidelines
OG, FG, IBU, SRM and ABV ranges for 20+ common beer styles for recipe design and style matching.
Gravity Conversion Table
Convert between Specific Gravity, degrees Brix and degrees Plato from 1.000 to 1.120 SG.
Hop Alpha Acid Chart
Hop variety reference with alpha acid percentages, typical use, country of origin and flavour profiles.
Yeast Strains Reference
Popular ale and lager yeast strains with attenuation ranges, fermentation temperatures and flavour profiles.
Why Use BrewCalcs?
Every calculator on this page is completely free, requires no signup, and works on any device. Get accurate results instantly with clear breakdowns you can trust.
BrewCalcs gives you 113+ specialist calculators across 16 categories. Results include detailed breakdowns and let you input your own prices for cost estimates tailored to your needs.