Alcohol Unit Calculator
The Alcohol Unit Calculator computes alcohol unit from the relation units = volume in ml x ABV percent divided by 1000. It takes 2 inputs (volume of drink in ml, alcohol by volume in %) and returns the alcohol unit. Because this is a pure mathematical or physical formula rather than a jurisdiction-specific rule, the result never changes over time: the same inputs always produce the same answer, so you can rely on it whether you are checking homework, sizing a design, or sanity-checking another tool. Enter your values in the fields below and the result updates instantly; you can also share a permalink that pre-fills the exact calculation, which is useful for teaching, reports, or collaboration. For example, with volume of drink = 175 ml, alcohol by volume = 13 %, the alcohol unit works out to 2.275, and the worked example further down the page shows every step so you can follow the arithmetic and reproduce it by hand. The method is the standard form documented by NHS Alcohol units, and the figure above each result carries the date it was last verified. This tool is general information and is not a substitute for professional engineering, medical, financial, or scientific advice; always check critical results against the primary source and your own judgement.
With Volume of drink = 175 ml, Alcohol by volume = 13 %, the result is 2.275.
Applies to: any numeric inputs. Method source: NHS Alcohol units, checked 2026-06-23.
The formula
units = volume in ml x ABV percent divided by 1000
Worked example
With Volume of drink = 175 ml, Alcohol by volume = 13 %:
- Multiply volume in ml by ABV percent: 175 x 13
- Divide by 1000
- Alcohol units = 2.275
- Alcohol Unit = 2.275
This worked example is one of the automated golden-value tests this calculator must pass before it can publish.
What this assumes
- Inputs are real numbers in the units shown.
- The result is the exact value of units = volume in ml x ABV percent divided by 1000; general information, not professional advice.
Frequently asked questions
What formula does this use?
units = volume in ml x ABV percent divided by 1000, the standard form documented by NHS Alcohol units.
Does the result ever change over time?
No. This is a pure formula with no external rate, so the same inputs always give the same result.
Official sources and verification
- Method: NHS Alcohol units, checked 2026-06-23.
Reviewed by the CalculatorHub team, edited by James Graham, 2026-06-23. See our methodology. General information, not professional advice.