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ABW from ABV Calculator

Enter the alcohol by volume (% ABV) to get the alcohol by weight (% ABW).

How to use

  1. Enter your values in the fields above.
  2. Press Calculate to see your result instantly.
  3. Use the Share button to copy a link to your result.

About this calculator

This calculator converts alcohol by volume (ABV) to alcohol by weight (ABW) using ABW ≈ ABV × 0.79336, the factor derived from ethanol's density relative to the finished beverage — since alcohol is lighter than water, a given percentage by volume always corresponds to a smaller percentage by weight.

Brewers use this conversion because US beer labeling has historically shown ABW while most of the world (and most consumers) think in ABV, so the two figures need to be reconciled to compare beers across labeling conventions or meet a state's specific alcohol-content disclosure rules. The 0.79336 factor is an approximation that holds reasonably well for beer-strength beverages but drifts slightly at very high ABV.

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