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No alcohol estimate

Estimate based only on the drinks and timing you entered. It is not a measurement of your actual BAC.

Estimated BAC

0.0 mg/100 ml

Add an alcoholic drink to populate the alcohol estimate.

Do not use this estimate to decide whether you are safe or legally allowed to drive, work, operate equipment, or perform safety-sensitive activities.

Modelled trend if no more drinks are added

Add drinks to see your modelled BAC trend.

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Pro-Tip

Eating a meal before drinking may slow absorption and lower peak BAC. It does not change total elimination time.

What you can do next

Explore Your Full Picture

Recovery EstimateSee how the estimate changes over time.Recovery EstimateHydrationSuggested fluid context based on this session.HydrationHangover RiskEstimated next-day risk from this session.Hangover RiskAlcohol ImpactUnderstand the short-term body load.Alcohol Impact

* Legal limits vary by driver type, vehicle and state. This tool cannot determine legal driving status.

Last updated: April 25, 2026

Morning after: am I still over the limit?

This is one of the most frequently misjudged scenarios. Many people assume that if they went to bed and several hours have passed, the matter is settled. The problem is that sleep does not remove alcohol any faster. If you were drinking late, heavily or quickly, you can still have alcohol in your blood the following morning, and next-day performance can still be affected.

On this page you can see an educational metabolism curve and legal-limit context. It is not proof that driving is safe or legal or an assessment of your situation.

Safety first

Do not drive after drinking. Even when you feel sober, alcohol can impair reaction time, attention, and judgement, and any estimate on this page is a population-level model — not a fitness-to-drive indicator. If you must know whether you are below a legal limit, use a calibrated, type-approved breathalyser, request a blood test, or simply wait. When in doubt, do not drive.

Educational note

Sleeping through the night does not automatically mean alcohol is gone or impairment risk is over. If you drank late or more than a token amount, you could still have alcohol present or have impaired performance in the morning.

What the answer depends on

The body metabolises alcohol at its own pace and does not suddenly speed up just because you are asleep. Sleep may improve how you feel, but it does not magically shorten the time needed for BAC to fall. If the last drinks were late at night, you may still be in the decline phase the following morning and still above the limit.

The second problem is that even at a lower BAC you can be dehydrated, poorly rested and less alert. This is especially relevant if you want to drive early in the morning after a party or a dinner with alcohol.

How to interpret the result

On this page, pay attention not only to the current estimate but also to the time of falling below 80 mg and 0 mg if that variant is shown. In many cases the morning risk is not just about "are there still traces?" but about the fact that the user feels better than they actually perform.

That is why it is worth combining the BAC result with wider signals: sleep quality, hydration, fatigue and time since the last drink.

Common mistakes

Frequently asked questions

Can I still have alcohol in my blood after sleeping through the night?

Yes. It happens more often than most people assume.

By what time in the morning might the model cross a reference threshold?

It depends on the amount of alcohol, the time of the last drink, body weight and other factors. The calculator shows educational context only.

Does coffee remove alcohol faster?

It does not remove alcohol from the body. It may at most change how alert you feel.

Does a shower or a walk make a difference?

They do not speed up alcohol metabolism in any meaningful way.

Does not having a hangover mean alcohol cannot affect me?

No. How you feel is not a reliable indicator of BAC or full capacity.

How can I check whether I still have alcohol in the morning?

A calculator is only an estimate. It cannot assess your legal situation, impairment, or fitness to drive.

After how many hours of sleep does BAC typically fall?

There is no single number of hours that applies to everyone. The dose and the time of the last drink matter most.

Does the calculator take into account the time since the last drink?

Yes. It is a key parameter for the morning assessment.

Estimate based on the Widmark equation with a dynamic absorption curve (Mitchell et al., 2014) and elimination rate per Jones (2010). Methodology .

See also

How long after drinking can I drive? UK drink drive limit 2026 Can I drive after drinking? Can I drive after 2 pints?

For more educational context on metabolism timing, see the alcohol metabolism timing page.

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