How long does alcohol stay in your system calculator

Substance abuse causes very real mental and physical health concerns. This calculator is not meant to be a substitute for medical advice or seeking help to get sober.

The Drug Effects Calculator tool provides an estimated length of time it might take for many of the acute, intoxicating drug effects to resolve or wear off—in other words, how long it might take for someone using a particular drug to sober up.

Getting sober is only one step in the recovery process. In many cases, detoxing from a particular substance can be very painful and dangerous. We do not recommend attempting to detox on your own without the help of qualified medical support.

Additionally, please be aware that even after drugs metabolize out of the body, a person can still have cravings and triggers that create the impulse to use again. A professional drug treatment program like ours can help you or your loved one learn to cope with these factors. Please call us to get help anytime at .

To use the tool, simply input the corresponding information below to calculate an estimated time for many of the acute symptoms of substance use to resolve.

The Drug Effects calculator is meant for educational purposes only. The Drug Effects calculator and information generated from it is not intended to replace the medical advice of your doctor or healthcare provider and should not be relied upon for informing healthcare decisions. The Drug Effects calculator and information generated from using the tool does not constitute legal advice. Please consult your healthcare provider for advice about a specific medical condition and legal counsel for any legal questions. Calculating drug effects duration based on substance half-life calculations will not be 100% accurate due to the numerous factors and complexities relating to drug consumption by different individuals—including differences in precise drug composition, purity/potency, and routes of administration used—as well as variables impacting a substance’s distribution and clearance. Half-life, as a predictor of the duration of drug effects, is limited. The Drug Effects calculator instead provides a rough estimation of the duration of pharmacologic effects based on known inputs.

The Sussex Safer Roads Partnership take the view that there is no safe limit of alcohol when driving.

The drink drive limit allows for 35 microgrammes of alcohol in 100 millilitres of breath. (In Scotland the legal limit is lower.)

If you are drinking any amount of alcohol on a night out – even one drink – you should leave the car at home and make alternative arrangements – such as getting a bus, taxi, designated driver or get someone to pick you up.

Our calculator is not intended to help you work out how much you can drink on a night out before driving home and won’t help you if you are arrested for drink driving.

What it will do is enable you to calculate roughly when it will be safe for you to drive the morning after drinking alcohol, and it can help you calculate when to stop drinking alcohol if you have to drive the following morning.

So how does it work?

The calculator allows one hour for each unit of alcohol, plus an additional hour for the first drink to allow for the alcohol to enter the bloodstream. It then rounds up the calculation to the nearest half hour. The calculator obviously cannot take account of your weight, metabolism, what you have eaten, your mood etc – It’s a rough guide.

The calculator bases its calculation from the time you stop, not when you start drinking. Some people say this is over-cautious, but we’d rather be safe than sorry.

The ‘hours before driving’ calculation is not based on any drink drive limit – it is the length of time when the alcohol in the drinks you’ve consumed is likely to have passed through your body. This is when we suggest you could be ‘safe to drive’.

How to use

Simply add up the drinks you consumed the night before and the calculator will store them and give you a rough calculation of when you will be safe to drive.

There are a whole range of drinks stored on the calculator, but, there could be a drink that is not listed – however, there may be something of similar alcoholic content (ABV).

Remember

The ultimate decision to drive is yours - take responsibility and do the right thing!

Blood Alcohol Content Calculator

Are you male or female?

What is your weight?

St/lbs Kg

 kg

 st  lb

Drinks Consumed

 % Abv

How Many?

Add Drink(s)

 % Abv

How Many?

Add Drink(s)

 % Abv

How Many?

Add Drink(s)

Time Since Last Drink

Hours Minutes

Reset Drinks | Start Over

Drinks added: 0 | Time Elapsed: 0 Hrs 0 mins

BAC% = waiting input

[legal limit England & Wales: 0.08%]

[legal limit Scotland: 0.05%]

No online BAC Calculator should be used to determine an individuals fitness to drive. There are so many variables and factors that can affect a specific individuals BAC level at any given time that the only fail-safe and reliable way to calculate an individuals blood alcohol level at a precise moment in time is by blood analysis or a reliable and type approved breathalyser. This BAC calculator provides reliable estimates based on average biological values and scientific research and should be used for educational, research and information purposes only. If in doubt, use common sense and do not drive.

Blood Alcohol Content Calculator | Alcohol Units & BAC

The Drinkdriving.org Blood Alcohol Calculator

The Drinkdriving.org BAC calculator is based on the widmark method of calculating blood alcohol content. The BAC calculator provides an accurate estimation of an individuals BAC at a certain period in time.

Like any other online BAC calculator it cannot provide results with 100% accuracy due to the many variables that come into play (see below) that can affect an individuals BAC level.

While the calculator takes into account gender, weight, drink amount, alcohol percentage and the period of time over which any alcohol has been consumed, it is based on the consumption of alcohol by an average healthy human being.

What is BAC - Blood Alcohol Content?

Blood alcohol content is a measure of the amount of alcohol present in a certain amount of blood. It is usually described as the amount of alcohol in mg per 100ml of blood. The maximum prescribed legal drink driving limit in England and Wales is 80mg/100ml blood or 0.08% and in Scotland it is 50mg/100ml blood or 0.05%.

It is a criminal offence to drive with a blood alcohol level that exceeds the maximum prescribed legal limit.

Factors that Affect your BAC (Blood Alcohol Content)

Numerous factors can affect an individuals BAC, these include:

• The amount of alcohol a person consumes: the more alcohol a person drinks, the higher their BAC will become
• The speed at which a person consumes alcohol: the faster a person drinks, the faster their BAC will rise
• A person's gender: alcohol is highly water soluble and a person's BAC is directly proportional to their total body water content. Females generally have less water in their bodies than males, this means that a female who drinks exactly the same amount of alcohol as a male, in the same space of time, will generally have a higher BAC.
• A person's weight: the more a person weighs usually means the more water they will have in their bodies. This means any alcohol ingested will produce a lower alcohol to blood ratio than that of a person weighing less. This is because the alcohol is "spread out" more "thinly".
• A person's fat/muscle content: fatty tissue does not absorb alcohol very well, alcohol will be absorbed a lot more into other tissues which are rich in water such as muscle. If two people weighing 90kg, one a tall thin person and the other a small fat person consumed the same amount of alcohol, the small fat person would usually have a higher BAC than the thin person.
• A person's metabolism (the rate at which alcohol is processed and eliminated by the body): this can vary from person to person, however, the average person will usually eliminate 10ml of alcohol per hour. Heavy drinkers may have more active livers and can therefore usually eliminate more alcohol than average. People with liver disease may have less active livers and will therefore usually eliminate alcohol slower.
• Medication and the amount of food in the stomach: this can have an effect on the rate at which alcohol is absorbed into the body and subsequently eliminated.
• A person's age: younger people tend to usually metabolise alcohol more quickly than older people.

REMEMBER THE ONLY 100% SAFE ALCOHOL DRIVING LIMIT IS 0

IF YOU INTEND TO DRINK ALCOHOL - STAY SAFE AND DONT DRIVE!!

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