Alcohol Metabolism Calculator
Estimate BAC reduction over time using a selected metabolism rate.
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Result
Enter values above and click Calculate to see your result.
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Formula
How it works: The tool applies a selected metabolism speed to estimate how BAC changes over time.
Worked Example
How Your Body Metabolizes Alcohol
The body eliminates alcohol at a roughly constant rate, typically around 0.015% BAC per hour. This rate is set by liver enzyme capacity and cannot be accelerated by any common remedy.
- Average elimination rate is approximately 0.015% BAC per hour, though it ranges from 0.010% to 0.020% between individuals
- Coffee, cold showers, exercise, and food do NOT speed up alcohol metabolism once alcohol is in the bloodstream
- The liver processes alcohol through enzymes (primarily ADH and ALDH) at a fixed maximum capacity
- Higher starting BAC means more time needed: a BAC of 0.08% takes roughly 5 to 6 hours to reach zero
This calculator models BAC decline over time for educational understanding. Real metabolism varies by individual genetics, liver health, and other biological factors.
You can also calculate changes using our Sober Time Calculator, Blood Alcohol Time Calculator, BAC by Weight Calculator or BAC Calculator.
Frequently Asked Questions
Can coffee or cold showers speed up alcohol metabolism?
No. Nothing speeds up the rate at which your liver processes alcohol. Coffee may make you feel more alert, but your BAC remains the same. Only time reduces BAC.
Is the elimination rate the same for everyone?
No. Rates vary between individuals from about 0.010% to 0.020% per hour. Factors include genetics, liver health, age, and regular drinking habits. The average is approximately 0.015% per hour.
How long does it take to go from 0.08% to zero?
At the average elimination rate of 0.015% per hour, going from 0.08% to 0.00% takes approximately 5 to 6 hours. Individual times may be shorter or longer.
Does eating food after drinking help?
Food slows the absorption of alcohol that is still in your stomach, which can lower peak BAC. But once alcohol is absorbed into the bloodstream, food does not speed up elimination.
Can I embed this Alcohol Metabolism Calculator on my website?
Yes. Click the "Embed" button at the top of this page to customize the size, colors, and theme, then copy the iframe code. Paste it into any HTML page, WordPress site, or CMS. It is completely free, requires no signup, and works on all devices. You can also visit our embed guide at calculory.com/services/embed-calculators for more details.
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I can help you understand the alcohol metabolism calculator formula, interpret your results, and answer follow-up questions.
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