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Alcohol, explained with numbers and without judgement

Blood alcohol, drink driving, units, health, cutting down: clear answers based on official sources, with the maths done for you.

Free BAC calculator: how it works (Widmark explained)
Blood alcohol Latest article

Free BAC calculator: how it works (Widmark explained)

How a blood alcohol (BAC) calculator works: the Widmark formula step by step, a worked UK example in mg per 100 ml, and the limits of any online estimate.

5 min read