Final ABV
32.11%
Old Fashioned ABV Calculator
Compare stirred old fashioned strengths with practical dilution presets. The calculator includes bourbon and rye builds plus a brandy old fashioned variation section on this same page.
Interactive old fashioned strength
Final volume
88 mL
Ethanol volume
28.1 mL
US standard drinks
1.58
Equivalent 12 oz beers (5% ABV)
1.50 beers
Ingredient assumptions
Variation table
| Variation | ABV | US standard drinks | Notes |
|---|---|---|---|
| Bourbon old fashioned | 32.11% | 1.58 | 2 oz bourbon, bitters, sweetener, and stirred dilution. |
| Rye old fashioned (100 proof base) | 35.54% | 1.75 | Uses a higher-proof rye whiskey with the same stirred build. |
| Brandy old fashioned | 24.61% | 1.41 | Brandy-led variation with muddled fruit and soda topper assumptions. |
How stirred dilution affects ABV
Old fashioneds are usually stirred over ice rather than shaken. Stir time, ice size, and serving temperature all change dilution, which directly changes final ABV.
Formula: (sum of ingredient ethanol) ÷ (ingredient volume + dilution water).