Alcohol Dilution Calculator

Calculate alcohol content and dilution ratios

Alcoholic Ingredients

Non-Alcoholic Mixer Volume (ml)

About Alcohol Dilution Calculator

Understanding Alcohol Dilution

Alcohol dilution combines chemistry and mixology in fascinating ways. When you mix spirits with other ingredients, you're engaging in precise science dating back to the 1800s. Professional bartenders have always carefully balanced alcohol content for taste, potency, and safety, drawing on both tradition and scientific principles.

The Science Behind Alcohol Mixing

When we mix alcoholic beverages, ethanol (C₂H₅OH) molecules distribute evenly throughout the liquid. The final alcohol by volume (ABV) is determined by the ratio of alcohol to total volume. Unlike many chemical mixtures, alcohol and water create an "ideal solution" where volumes are approximately additive, with minimal contraction.

The Math Behind Mixology

Final ABV: Total Alcohol Volume / Total Liquid Volume × 100%
Total Alcohol: Σ(Volume of Spirit × ABV% / 100)
Dilution Factor: Original ABV / Final ABV

Did you know?

Temperature changes volume ~1.5% for every 10°C
Ice dilutes drinks by 20-25% during proper mixing
Water and ethanol binding creates slight volume contraction

Standard Alcohol Units:

1 unit = 10ml pure alcohol
1 standard drink ≈ 14g pure ethanol
Varies by country and serving size

Common ABV Reference

Beverage Type	Typical ABV Range	Notes
High-proof Spirits	50-75%	Overproof rum, absinthe
Standard Spirits	35-50%	Vodka, gin, whiskey, tequila
Liqueurs & Cordials	15-30%	Balanced for sweetness
Fortified Wines	16-24%	Port, sherry, vermouth
Table Wine	11-14%	Red, white, rosé
Beer	4-8%	Varies by style
Low-alcohol options	2-5%	Spritzers, hard seltzers

Dilution Factors in Mixology

Ice & Temperature Effects:

Crushed ice: Rapid dilution (ideal for Mint Juleps)
Large format ice: Slow dilution (perfect for Old Fashioneds)
Shaking: 20-30% dilution
Stirring: 10-15% dilution
Proper temperature: Usually -5°C to 0°C for mixed drinks

Other Factors:

Large garnishes displace 5-10ml of liquid
Carbonation creates unique alcohol distribution
Sugar content affects alcohol density
Serving size standards vary globally

Responsible Serving Practices

→Standard drink: Usually defined as 14g of pure ethanol (about 44ml of 40% ABV spirit)
→Legal serving limits: Most places have safety guidelines limiting ABV or serving sizes
→BAC calculation: Consider gender, body weight, and metabolism
→Portion control: Use measured pourers and jiggers for consistency
→Food pairing: Higher fat foods slow alcohol absorption

Professional Applications

Craft Bartending:

Precise dilution curves for signature drinks
Bottled cocktail production
Large-format batching for events
Menu engineering with balanced ABV ranges

Pro Tips:

Pre-dilute batched cocktails by ~25% to account for missing ice dilution
Freeze higher-proof spirits for controlled dilution
Consider storage temperature for bottled cocktails
Measure precise ABV with an alcoholmeter

Learn More

NIAAA Standard Drink Guidelines Diffords Guide to Cocktail Dilution