Observed arrival · 2026-09-23

HomebrewNumbers shows its brewing math

homebrewnumbers.com Visit website

Editorial interest 78/100 Selection signal · not a rating of the site

A free suite of homebrewing calculators for gravity, alcohol, bitterness, mashing, and carbonation, with formulas and sources identified.

Landing page captured for the 2026-09-23 issue.

For: Homebrewers checking recipe calculations
Worth noticing: The site says it leaves out a refractometer post-fermentation correction because it could not retrieve a source for the formula.

Field notes

The homepage explains that brewing calculators can disagree because some common formulas are empirical fits and tools may choose different methods. It says source retrieval is a condition for inclusion: the post-fermentation refractometer correction is absent, while several other formulas were added after a fetchable source was found.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

ƒJavaScriptBrowser-side code central

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