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Drink Driving Limit Calculator

Check if you're estimated to be under your country's legal BAC limit. Select your country, enter your details, and get an instant estimate.

This calculator provides estimates only. There is no safe amount to drink before driving. If you've been drinking: don't drive.

Drink Driving Limits by Country

Country BAC Limit Notes
United States0.08%Utah: 0.05%. Commercial: 0.04%. Under-21: 0.00%
United Kingdom0.08%Scotland: 0.05%
Australia0.05%Learner/P-plate: 0.00%
Canada0.08%Warn range 0.05–0.08
Germany0.05%Novice: 0.00%
France0.05%Novice: 0.02%
Japan0.03%—
Norway0.02%—
Sweden0.02%—
India0.03%—
Brazil0.00%Zero tolerance
Russia0.03%—
New Zealand0.05%Under-20: 0.00%
Ireland0.05%Professional: 0.02%
3 drinks
1 20

1 standard drink = 12oz beer, 5oz wine, or 1.5oz liquor

2 hours
0.5 hr 12 hrs

Your Estimated BAC

0.000

LIMIT: 0.080%

Sobering Up: Myths vs. Facts

✗ MYTH

"Coffee sobers you up."

✓ TRUTH

Coffee may make you feel more alert, but it does not lower your BAC or reduce impairment. You'll be a wide-awake drunk.

✗ MYTH

"A cold shower will sober you up."

✓ TRUTH

Cold water may shock you awake temporarily, but your BAC stays exactly the same. Only time metabolizes alcohol.

✗ MYTH

"Eating food after drinking absorbs the alcohol."

✓ TRUTH

Food before drinking slows absorption, but eating after won't lower your BAC. The alcohol is already in your bloodstream.

✗ MYTH

"Throwing up gets rid of the alcohol."

✓ TRUTH

Most alcohol is absorbed within 20 minutes. Vomiting only removes what's still in your stomach, not what's already in your blood.

✗ MYTH

"Exercise and sweating burns off alcohol."

✓ TRUTH

Only about 5% of alcohol leaves through sweat and breath. Your liver does 95% of the work at a fixed rate of roughly 0.015% BAC per hour.

✗ MYTH

"Sleeping it off means you're fine to drive in the morning."

✓ TRUTH

If you drank heavily, you may still be over the legal limit the next morning. Many drink-driving arrests happen the morning after.

Why This Matters

Sobering Up Myths Debunked

The most dangerous thing about alcohol impairment is how normal you can feel while still being significantly over the legal limit. Your brain is the first organ affected, which means your ability to judge your own impairment is compromised from the very first drink.

There are no shortcuts. Coffee, cold showers, exercise, food, and fresh air will not lower your blood alcohol level. Only time works. Your liver metabolizes alcohol at a fixed rate of approximately 0.015% BAC per hour — roughly one standard drink per hour — and nothing can speed that up.

"Sleeping it off" is particularly deceptive. A heavy night of drinking can leave you over the legal limit well into the following morning. If you had 10 drinks ending at midnight, you could still be impaired at noon the next day.

Drink Driving Laws by Country

Legal BAC limits vary dramatically around the world. The United States and United Kingdom set the limit at 0.08%, one of the highest in the developed world. Most of Europe, Australia, and New Zealand use 0.05%, while Scandinavian countries enforce limits as low as 0.02%.

Several countries operate zero-tolerance policies. Brazil, Hungary, the Czech Republic, and many Middle Eastern nations set the legal limit at 0.00%. Many countries also enforce stricter limits for novice drivers, commercial drivers, and young drivers.

Penalties range from fines and license suspension to mandatory jail time. In some jurisdictions, a drink-driving conviction results in a permanent criminal record. Many countries impound your vehicle on the spot.

Regardless of your country's legal limit, impairment begins well below any legal threshold. Studies show measurable impairment in reaction time and divided attention at BAC levels as low as 0.02%. The safest BAC for driving is always 0.00%.

Frequently Asked Questions

What is the legal drink driving limit?
In most US states, the legal limit is 0.08% BAC. For commercial drivers it's 0.04%. In the UK, Scotland, and many other countries, the limit is 0.05%. Some countries have zero-tolerance policies.
How many drinks can I have and still drive?
There is no safe universal answer. BAC depends on your weight, sex, how fast you drank, and whether you ate. The safest answer is: if you've been drinking, don't drive.
How long should I wait after drinking to drive?
Your body eliminates alcohol at about 0.015% BAC per hour. As a rough guide, wait at least 1 hour per standard drink consumed, plus an extra hour for safety. But individual metabolism varies significantly.
Does coffee or food help me sober up faster?
No. Nothing speeds up alcohol metabolism — not coffee, not food, not cold showers, not exercise. Only time reduces your BAC. Coffee may make you feel more alert, but your BAC and impairment remain the same.

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