The BAC Calculator

LABEL COMPARISON TOOL

Compare drink labels.
See the alcohol amount.

Compare two labelled drinks by container size and ABV. The result shows pure alcohol, standard-drink context and alcohol-only calories—not impairment, BAC, or driving fitness.

DRINK STRENGTH COMPARISON

Which label contains more pure alcohol?

Choose a reference and enter two labels

Use the volume and ABV printed on the label. Results are educational amount comparisons only.

THE COMPARISON

Volume × ABV
shows pure alcohol.

For each label, we calculate volume in ml × ABV as a decimal × 0.789 g/ml. We then show the difference in grams, the selected country reference and alcohol-only calories. A larger or stronger container can contain more alcohol even when the drinks appear similar.

Calculate one full container
Calculate pure alcohol grams
Compare country references

Compare alcohol amount, not personal effect

Two drinks can have different volumes and ABVs, so a percentage alone is not enough to compare the alcohol they contain. This tool is designed for reading labels and understanding reference units. It does not measure BAC, impairment, tolerance, health risk or legal status.

Sources and review

  1. National Institute on Alcohol Abuse and Alcoholism: What Is a Standard Drink?
  2. The BAC Calculator: sources and review process

Last reviewed: July 24, 2026 · Read our editorial policy.