Hangover Severity Calculator
Estimate estimated Peak BAC and hangover severity. Analyze hydration, body weight, sleep deficits, and food consumption buffer levels to calculate recovery remedies.
🍺 Evening Metrics
Hangover Meter📊 Hangover Forecast
Widmark ScienceNone
• You are in excellent shape. Maintain current water intake and enjoy your day!
The Science of Alcohol Metabolism & Dehydration
How the Widmark Formula Works
The Widmark formula is the clinical standard for estimating Blood Alcohol Concentration (BAC). It models pure alcohol grams relative to body weight, adjusted by biological sex constants (0.68 for males, 0.55 for females) and an average metabolism rate of **0.015% per hour**.
The Role of Food & stomach Absorption
Drinking on an empty stomach allows alcohol to pass rapidly into the small intestine, triggering a spike in Peak BAC. Consuming a full, high-protein meal prior to drinking acts as a buffer, slowing absorption and protecting metabolic rate.
Dehydration & Sleep Deprivation
Alcohol acts as a diuretic, accelerating fluid loss. Coupling dehydration with sleep deprivation (which prevents standard cell repair) aggregates toxic byproduct buildup like acetaldehyde, leading to headache and fatigue symptoms.
A Worked Example
Take a 160-lb man who has four standard drinks (about 56g of alcohol) over three hours. Plugging into the Widmark formula with the male constant of 0.68 gives a peak BAC near 0.11% — over the 0.08% legal driving limit.
Subtract the body's roughly 0.015%-per-hour clearance and he's still around 0.07% three hours in. Eating a real meal first and alternating water lowers the peak and softens the next-day hit, but only time brings BAC down. This is an educational estimate, not medical advice — if you've been drinking, don't drive.
Frequently Asked Questions
How can I prevent a hangover?
Hydrate between drinks, eat before and while drinking, pace yourself to about one standard drink per hour, and get a full night's sleep. Drinking less is the only sure prevention.
How long does it take to sober up?
Your body clears roughly one standard drink per hour, and nothing speeds it up — not coffee, cold showers, or food. Only time lowers your blood alcohol concentration.
Is this calculator medical advice?
No. It's an educational estimate of BAC and hangover severity for entertainment only. Never use it to decide whether you're safe to drive — if you've been drinking, do not drive.