What this result means
Convert beverage volume and ABV into grams of ethanol plus US, UK and Australian reference units.
Standard Drink Calculator
Standard Drink
Enter your values, then calculate to see a verified result.
Reference range
How this result is calculated
A clear calculation path based on your inputs.
Inputs usedReview the information used for this result.
Full calculation and sourcesAlcohol grams = volume mL x ABV x 0.789; US standard drinks = grams / 14.
Versioned calculationFormula v1.0.0
Method used
Alcohol grams = volume mL x ABV x 0.789; US standard drinks = grams / 14.
Important limitation
Standard-drink definitions vary by country. The result deliberately shows U.S. 14 g drinks, UK 8 g units and Australian 10 g drinks separately.
Enter the inputsUse values with the units and definitions shown beside each field.
Apply the methodAlcohol grams = volume mL x ABV x 0.789; US standard drinks = grams / 14.
Inspect the bridgeReview the primary result and supporting outputs before using it.
Check limitationsConfirm the assumptions, date, jurisdiction or population match your use case.
Interpretation
A 355 mL drink at 5% ABV contains about 14 g ethanol, close to one US standard drink.
Alcohol grams = volume mL x ABV x 0.789; US standard drinks = grams / 14.
Standard-drink definitions vary by country. The result deliberately shows U.S. 14 g drinks, UK 8 g units and Australian 10 g drinks separately.
Use this result
Continue with your result
Compare, save, or take the next step
Did we solve your problem?Your feedback helps us improve this calculator.
Thanks. Your feedback has been recorded.
Keep exploring
Check out 2 similar alcohol calculators & resources
Public verification recordFormula v1.0.0
- Review scope
- Standard Drink Calculator Formula, Input Validation, Edge Behavior And Result Presentation.
- Review team
- CalculatorGeek Expert Review Team
- Verified
- 2026-09-21
- Next source review
- 2027-09-21
- Automated fixtures
- 1 cases
Review method
Package reconciliation, primary-source mapping, competitor feature comparison, deterministic fixtures, PHP/JavaScript parity and responsive preview QA.
Known limitations
- Standard-drink definitions vary by country. The result deliberately shows U.S. 14 g drinks, UK 8 g units and Australian 10 g drinks separately.
- Changing legal, medical, exam or statistical conventions must be checked at the source.
On this page
Direct answer
Convert beverage volume and ABV into grams of ethanol plus US, UK and Australian reference units.
Continue with the BAC Calculator when that method matches your next question.
Continue with the Sobering Time Calculator when that method matches your next question.
Formula and methodology
Alcohol grams = volume mL x ABV x 0.789; US standard drinks = grams / 14.
A 355 mL drink at 5% ABV contains about 14 g ethanol, close to one US standard drink.
Worked example
A 355 mL drink at 5% ABV contains about 14 g ethanol, close to one US standard drink.
The calculator retains working precision and rounds only the displayed values.
Interpret the result carefully
Method boundary: Standard-drink definitions vary by country. The result deliberately shows U.S. 14 g drinks, UK 8 g units and Australian 10 g drinks separately.
Inputs, boundary behavior and JavaScript/PHP parity are covered by deterministic release tests.
Use the result for the named task only. Do not stretch it into a legal, clinical, safety or causal conclusion the formula does not support.
Inputs, outputs and result meaning
Calculates uS standard drinks, pure alcohol, uK units, and australian standard drinks from serving volume, alcohol by volume, and number of servings with visible method, validation, precision, and limitations.
Inputs
- Serving volume
- Volume per serving. Supported units include mL. The supported range is 1 through 10,000.
- Alcohol by volume
- ABV on the label. Supported units include %. The supported range is 0 through 100.
- Number of servings
- Number of identical servings. The supported range is 0 through 100.
Outputs
- US standard drinks
- This is the primary result. It is displayed in drinks. The visible value uses up to 3 decimal places according to the output rule.
- Pure alcohol
- It is displayed in g. The visible value uses up to 2 decimal places according to the output rule.
- UK units
- It is displayed in units. The visible value uses up to 3 decimal places according to the output rule.
- Australian standard drinks
- It is displayed in drinks. The visible value uses up to 3 decimal places according to the output rule.
The calculator applies the documented method after validating and normalizing the inputs. Keep the result label, unit, selected mode, and stated limitations together when sharing the answer.
Frequently asked questions
What method does this calculator use?
Alcohol grams = volume mL x ABV x 0.789; US standard drinks = grams / 14.
How should I round the result?
Keep full precision during the calculation and round only the final display unless a governing standard says otherwise.
What is the main limitation?
Standard-drink definitions vary by country. The result deliberately shows U.S. 14 g drinks, UK 8 g units and Australian 10 g drinks separately.
Can I reproduce the answer?
Yes. The formula, inputs, supporting outputs and worked example are displayed on the page.
Sources
- NIAAA — What is a standard drink?
- CDC — Impaired Driving
- NIST OSAC — Alcohol calculations in forensic toxicology
- Australian Government — Standard drinks guide
- GOV.UK — Alcohol units
Source research refreshed September 21, 2026. No rankings, review credentials or official affiliation are implied.