The complete workbench

Find the number. Understand the method.

Choose a brewing calculation, see how it works, and use it to plan your next batch. Twenty-six interactive tools show their formula and limits; the guides explain the measurement behind them.

26 interactive tools

22 related guides

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48 tools and guides

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Showing 48 of 48 tools and guides

Interactive tool

ABV Calculator: OG to FG with Hydrometer Adjustment

Estimate beer ABV and apparent attenuation from OG and FG. See the formula, a worked example and the limits of hydrometer and refractometer readings.

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Bitterness Ratio (BU:GU) Calculator

Calculate BU:GU as IBU divided by original gravity points. Compare two beer recipes with a worked example and understand what the ratio cannot predict.

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Hop Substitution Finder: Replace Any Variety

Adjust a bittering addition for a different alpha-acid percentage. Calculate grams, compare an example and learn why equal bitterness does not mean equal aroma.

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Mastering Wort Dilution with Dilution & Gravity Calculator

Calculate top-up water for unfermented wort using volume and gravity points. Includes a 20-litre worked example, validation and practical measurement limits.

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Original Gravity (OG) Calculator by Grain Bill

Estimate wort gravity from grain weight, PPG, extract recovery and volume. Understand weighted grain potential and match efficiency to the measurement stage.

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Pre-Boil Gravity Calculator + Adjustments

Estimate post-boil wort gravity from pre-boil volume, gravity and final volume. See the gravity-points method and its assumptions before changing a recipe.

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Fermenter Headspace Calculator

Use the inputs, worked example and stated assumptions.

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Mash Water Volume Calculator

Use the inputs, worked example and stated assumptions.

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Sparge Water Calculator (Fly + Batch)

Use the inputs, worked example and stated assumptions.

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Adjunct Calculator: Sugar, Honey, DME for OG Boost

Adjunct calculator: gravity contribution. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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Boil-Off Rate Calculator for Your Setup

Boil-off rate calculator. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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Brew Day Timeline Planner

Brew day timeline planner. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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Brewing Salt Calculator (CaSO4, CaCl2, NaCl)

Brewing salt ion-addition calculator. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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CO2 Volumes Calculator by Beer Style

CO₂ volumes pressure calculator. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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Cost Per Bottle Calculator vs Commercial

Cost per bottle calculator. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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Fermentation Schedule Predictor by Temp + Yeast

Fermentation schedule planning calculator. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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Forced Carbonation Calculator (PSI by Temperature)

Forced carbonation calculator. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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Grain Bill Builder by Style and Target OG

Grain bill builder: target gravity. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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Hop Alpha Acid Adjustment Calculator

Hop alpha-acid adjustment calculator. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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Hop Utilization Calculator by Boil Time

Hop utilisation and IBU calculator. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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Hydrometer Temperature Correction Calculator

Hydrometer temperature correction calculator. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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Imperial to Metric Brewing Converter

Metric and US brewing volume converter. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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Priming Sugar Calculator by Style and Temperature

Priming sugar calculator. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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Refractometer Calculator (Brix to SG, with Alcohol)

Fermented refractometer correction calculator. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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Wort Color Blending Calculator

Wort colour blending calculator. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

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Yeast Pitching Rate Calculator

Yeast pitching-rate calculator. Use the stated inputs, inspect the working, and keep the result as a planning estimate.

Use calculator →Calculation guide