Morning After Drinking Calculator
Calculate when you’ll be safe to drive after drinking alcohol
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Beer & Cider
Wine
Spirits & Cocktails
Morning After Drinking Calculator
Alcohol remains in your system long after you’ve stopped drinking. Many people don’t realize they may still be over the legal limit the morning after a night out. Our Morning After Drinking Calculator helps estimate when you might be safe to drive again based on your alcohol consumption.
The calculator uses a formula that accounts for the number of alcohol units consumed, your gender, and weight. It’s important to note that this is only an estimate – individual factors like metabolism, food consumption, and overall health can significantly affect how quickly your body processes alcohol.
The legal blood alcohol concentration (BAC) limit for driving in most of the UK is 80mg of alcohol per 100ml of blood (0.08%), though it’s lower in Scotland at 50mg per 100ml (0.05%). However, there is no reliable way to convert this to a certain number of drinks, as each person processes alcohol differently.
How to Use the Morning After Drinking Calculator
Step 1: Enter Your Drinking Timeline
Select when you started drinking and when you finished your last drink. This helps the calculator determine the drinking period and when to start counting the alcohol processing time.
Step 2: Select Your Drinks
Browse through the categories (Beer & Cider, Wine, Spirits & Cocktails) and add the number of each type of drink you consumed. Be honest and accurate for the best results.
Step 3: Enter Your Personal Details
Input your weight in kilograms and select your gender. These factors affect how quickly your body processes alcohol and are crucial for an accurate estimate.
Step 4: Review Your Results
After clicking the calculate button, you’ll see your total alcohol units, estimated time until sober, and the specific time when you should be safe to drive. Pay special attention to the highlighted safe driving time.
Step 5: Plan Accordingly
Use the results to plan your transportation needs. Remember that this is an estimate only – if in doubt, wait longer or arrange alternative transportation. Never drive if you feel impaired, regardless of what the calculator shows.