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Night-out calculator

True Cost of a Night Out

Build the night in simple drink rows. Add each beer, wine, or spirit as its own line, mix and match freely, then see the combined alcohol load, calorie drag, water loss, roughness risk, and body timeline.

Example: 1 light beer + 1 craft / strong beer + 1 glass of dry white / rose + 2 US vodka shots.

Input parameters

Build your night

Keep each beer, wine, or spirit choice in its own row so the mixed-night totals stay readable. Expand only the sections you want to edit, then the combined details update instantly below.

Beer

One row per beer size or strength.

1 beer selected18.7 g

Beer starts with one default row. Expand this section to change the count, size, or beer style.

Wine

One row per wine format or style.

0 wines selected0 g alcohol

Wine starts at 0. Expand this section when you want to add a glass or bottle to the night.

Spirits

One row per spirit style or pour format.

0 spirits selected0 g alcohol

Spirits also start at 0. Expand this section when you want to add a shot or other spirit pour.

Body profile

One shared profile for the whole night.

Biological sex

Biological sex

Optional personalization. Weight changes the relative dose.

kg
Note: These outputs are educational estimates for informational purposes only for people aged 18+, not a legal impairment meter, drink-driving guide, or medical advice tool. [Read Full Terms & conditions]

Your night out at a glance

Beer-only night

1 beer of US Pint at Standard-Strength (~5% ABV)

Estimated clearance window

1 hr 52 min

1 beer of US Pint at Standard-Strength (~5% ABV) lands at about 18.7 g of pure alcohol, or 1.3 US standard drinks.

On the selected Man model, the current sleep band is Moderate night load, and water loss is about 187 ml. Use the replacement target below to top back up.

Alcohol[4]

18.7 g

Calories

199 kcal

Sleep band

Moderate night load

Water loss

187 ml

Details

Beer-only night

Clears in about 1 hr 52 min

Open details

Alcohol

18.7 g

Calories

199 kcal

Sleep band

Moderate night load

Water loss

187 ml

01

Energy and carb cost[1][2][3][4]

Beer currently adds 17 g of residual carbs, wine adds 0 g of residual sugar, and spirit rows are mostly alcohol calories.[1][2][3][4]

199 kcal

Pure alcohol[4]

18.7 g

US standard drinks[4]

1.3

02

Liver and metabolic cost[6][7]

Your body has about 18.7 g of alcohol to clear. On the selected Man model, that can take around 1 hr 52 min before the active alcohol load gets close to zero.[4][6][7]

1 hr 52 min

Pure alcohol[4]

18.7 g

Standard drinks

1.3

Relative dose

0.2 g/kg

Spirit roughness

No spirit rows

03

Sleep tax[8][9][10][11]

Alcohol can make you fall asleep faster at first, but it often delays REM sleep and can make the second half of the night lighter, choppier, and less refreshing.[8][9][10][11]

20 to 30 min later

REM starts later

20 to 30 min

Body recovery dip

10% to 25%

Sleeping heart rate rises

4 to 8 bpm

Common pattern

Sleepy first half, choppy second half

04

Water loss and replacement target[5]

Alcohol can drive about 187 ml of water loss. Even though these drinks are liquid, the diuretic effect can still increase water loss.[5]

187 ml

Water loss

187 ml

Replacement target

0 glasses

Drink breakdown

See what each side of the night is contributing

Each beer, wine, and spirit row stays separate, so it is easy to understand what each choice is adding before the totals are combined.

Beer total

1 beer across 1 beer row.

Alcohol

18.7 g

Calories

199 kcal

Residual carbs[1][2]

17 g

Water loss[5]

187 ml

Wine total

0 wine pours across 0 wine rows.

Alcohol

0 g

Calories

0 kcal

Residual sugar[3]

0 g

Water loss[5]

0 ml

Spirit total

0 spirit pours across 0 spirit rows.

Alcohol

0 g

Calories

0 kcal

Roughness score[14][15]

0 pts

Water loss[5]

0 ml

Collective read

How the mix changes the whole night

Only the beer rows are active here, so the total-night alcohol, calorie, carb, and fluid math comes entirely from the selected beer pours.[1][2][3][5][14][15]

No wine- or spirit-specific roughness multipliers are in play here, so the feel of the night is driven mostly by total alcohol dose.

Total drink volume

473 ml

Standard drinks

1.3

Water loss

187 ml

Sleep band

Moderate night load

Body timeline

Tap through the night to see what changes

The timeline follows the combined alcohol load from all active beer, wine, and spirit rows, so you can see how the full mix changes the night over time.

1 beer of US Pint at Standard-Strength (~5% ABV)

Current checkpoint

30 min

Alcohol remaining[4][6]

13.7 g

73.2% of starting load

Current stage

Absorption

What you may notice

You may feel warmer, looser, or sleepier fairly quickly while the drinks are still being absorbed.

What your body is doing

Beer is still climbing in the bloodstream and sedation can show up before full clearance catches up.

Sleep terms in plain English

What the sleep numbers mean on a mixed night

Alcohol can make you feel sleepier at first, then push REM later and leave the second half of the night lighter, choppier, and less refreshing. The mixed-night model uses total alcohol to set the base sleep band, then notes when rougher drink types are in the mix.[8][9][10][11]

Current band

Moderate night load

14 g to 28 g of pure alcohol across the full mix.

This is where the first half of the night can feel sedated, then the second half gets noticeably choppier.

No wine- or spirit-specific roughness multipliers are in play here, so the feel of the night is driven mostly by total alcohol dose.

REM starts later[8][9]

20 to 30 min

Body recovery dip[10][11]

10% to 25%

Sleeping heart rate rises[10][11]

4 to 8 bpm

Common pattern

Sleepy first half, choppy second half

Calculations

The math behind the page

These formulas drive the live results, and each card shows the exact numbers from your current mix.

Beer rows[1][2][4]

Beer row alcohol (g) = Beer volume (ml) x (ABV ÷ 100) x 0.789 Beer row calories = (Beer alcohol x 7) + (Beer carbs x 4)

Each beer row keeps its own volume and strength. Carbs stay on the beer side only.

Using your current selection

Row 1: 473 ml x 1 = 473 ml, 473 x (5 ÷ 100) x 0.789 = 18.7 g
Beer alcohol total = 18.7 = 18.7 g

Beer rows

1

Beer count

1

Beer alcohol

18.7 g

Beer calories

199 kcal

Wine rows[3][4]

Wine row alcohol (g) = Wine volume (ml) x (ABV ÷ 100) x 0.789 Wine row residual sugar (g) = Wine volume (ml) x (RS g/L ÷ 1000) Wine row calories = (Wine alcohol x 7) + (Wine residual sugar x 4)

Each wine row keeps its own format and style. Residual sugar stays on the wine side only.

Using your current selection

No active wine rows → 0 g alcohol, 0 g residual sugar

Wine rows

0

Wine count

0

Wine alcohol

0 g

Residual sugar

0 g

Spirit rows[4][14][15]

Spirit row alcohol (g) = Spirit volume (ml) x (ABV ÷ 100) x 0.789 Spirit row calories = Spirit alcohol x 7.1 Spirit row roughness score = Congener formula x (Volume ÷ 1000)

Each spirit row keeps its own pour format and spirit type. The congener score stays on the spirit side only.

Using your current selection

No active spirit rows → 0 g alcohol, 0 pts roughness

Spirit rows

0

Spirit count

0

Spirit alcohol

0 g

Spirit roughness

0 pts

Collective totals[4]

Total alcohol = sum of beer row alcohol + sum of wine row alcohol + sum of spirit row alcohol Total calories = sum of beer row calories + sum of wine row calories + sum of spirit row calories

The total-night numbers are additive because each row is fully modeled before it joins the mix.

Using your current selection

Total alcohol = 18.7 + 0 + 0 = 18.7 g
Total calories = 199 + 0 + 0 = 199 kcal

Beer alcohol

18.7 g

Wine alcohol

0 g

Spirit alcohol

0 g

Total alcohol

18.7 g

Water loss[5]

Water loss (ml) = Total alcohol (g) x 10 Replacement target (glasses) = Water loss ÷ 250

This keeps the water section simple: estimated water loss first, then a practical replacement target.

Using your current selection

18.7 x 10 = 186.6 ml
186.6 ÷ 250 = 0 glasses

Water loss

187 ml

Replacement target

0 glasses

Clearance and sleep band[6][7][8][9][10]

Men: Total alcohol (g) ÷ 10.0 Women: Total alcohol (g) ÷ 8.5 Low: < 14 g Moderate: 14-28 g High: > 28 g

The mixed-night sleep band is driven by total pure alcohol across every active row. Spirit roughness can make the night feel heavier, but the base sleep band still starts with the total alcohol dose.

How this mix was classified

18.7 ÷ 10 = 1 hr 52 min
14 g ≤ 18.7 g ≤ 28 g → Moderate night load

Sex model

Man

Clearance rate

10 g/hr

Sleep band

Moderate night load

Common pattern

Sleepy first half, choppy second half

Worked example

A practical mixed-night scenario

This worked example mirrors the way a reader thinks about a mixed night: one line for each drink type, then one line for the totals that actually shape the night.

Scenario

1 beer of US Pint at Standard-Strength (~5% ABV)

If this is the mix you are planning or reviewing, the page would summarize it like this before you dig into sources or edge cases.
Beer contribution18.7 g
Wine contribution0 g
Spirit contribution0 g
Total alcohol18.7 g
Total calories199 kcal
Water loss187 ml
Estimated clearance1 hr 52 min
Night profileModerate night load

Sources

Reference directory

Every inline marker above points back to one of these references, with beer-only, wine-only, spirit-only, and shared sources separated.

USDA FoodData Central

beer
[1]

Calories, Carbs, and Nutrition Values for Beer

Baseline calorie and carbohydrate references used for the beer side of the calculator.

American Chemical Society

beer
[2]

Sugar Elimination and Fermentation Science

Explains why finished beer contains mostly residual carbohydrates rather than meaningful simple sugar.

USDA FoodData Central

wine
[3]

Nutritional Profiles, Calories, and Residual Sugars in Wines

Baseline nutrition and residual sugar references used for the wine side of the calculator.

National Institute on Alcohol Abuse and Alcoholism

shared
[4]

What Counts as a Standard Drink

Standard drink definitions and the ethanol-mass conversion logic used for pure alcohol calculations.

Mayo Clinic

shared
[5]

Hangovers: Symptoms and Causes

Explains alcohol-driven vasopressin suppression and the resulting dehydration or water-tax effect.

National Institute on Alcohol Abuse and Alcoholism

shared
[6]

Alcohol Metabolism

Clinical background for alcohol oxidation, ADH and ALDH pathways, and flat-rate liver clearance estimates.

National Institute on Alcohol Abuse and Alcoholism

shared
[7]

Women and Alcohol

Background on lower gastric alcohol dehydrogenase activity and lower body-water distribution in women.

Harvard Health Publishing

shared
[8]

Alcohol and Fatigue

Plain-language summary of early sedation, REM suppression, and broken second-half sleep after alcohol.

Sleep Medicine Reviews / PubMed

shared
[9]

REM Delay Meta-analysis

Meta-analysis used for the REM-delay bands and overall sleep-architecture disruption context.

PLOS Digital Health

shared
[10]

Daily alcohol intake alters resting heart rate and heart rate variability during sleep

Wearable-data evidence for dose-dependent overnight heart-rate increases and HRV suppression.

PubMed Central / National Institutes of Health

shared
[11]

Alcohol and the Sleeping Brain

Mechanistic discussion of autonomic disruption, sympathetic rebound, and late-night sleep fragmentation.

PubMed Central / National Institutes of Health

wine
[12]

Histamine and Tyramine Content in Fermented Beverages

Background on histamine and tyramine exposure in fermented beverages, including wine.

American Journal of Enology and Viticulture

wine
[13]

Polyphenolic Tannin Chemistry in Grape Skins and Red Wines

Reference for red-wine tannin chemistry and why dry red can feel rougher than lower-congener styles.

PubMed

spirit
[14]

Role of Congeners in Hangover Severity

Mechanistic background for why different distilled spirits can feel rougher or cleaner beyond ethanol alone.

PubMed

spirit
[15]

Whiskey versus Vodka Hangover Comparison

Controlled comparison showing darker spirits can feel rougher than vodka at matched alcohol doses.

Note: This calculator keeps shared alcohol references separate from beer-only, wine-only, and spirit-only references to prevent citation mix-ups when the drink types are combined.

Calculator terms and conditions

This page is an educational information tool and not a medical or legal service.

1. General & Educational Purpose Only

This tool is an informational and educational estimator, not a medical device, clinical service, or diagnostic tool. It is designed solely to illustrate broad, population-level patterns around ethanol dose, hydration strain, recovery load, sleep disruption, and spirit roughness based on user-selected inputs.

2. Clinical & Biological Limitations

Individual alcohol metabolism varies drastically based on factors not captured by this tool, including but not limited to: prescription or over-the-counter medications, biological sex, personal tolerance, liver and kidney function, recent food and water intake, pregnancy or nursing status, sleep debt, underlying health conditions, and genetic enzyme variations (such as ADH and ALDH polymorphisms). Output data does not reflect your specific physiological state.

3. No Medical Advice or Emergency Care

Nothing on this website constitutes professional medical advice, examination, diagnosis, or treatment. Never disregard or delay seeking professional medical advice because of an output from this calculator.

  • If you believe you or someone else is experiencing alcohol poisoning, an adverse drug interaction, or any medical emergency, call your local emergency services (e.g., 911, 999, 112) or go to the nearest emergency room immediately.
  • If you have concerns regarding alcohol dependence or substance use, please consult a licensed healthcare professional or contact a national substance support helpline.

4. Driving, Operating Machinery, and Safety-Critical Tasks

Never use this calculator to determine whether you are fit, safe, or legally permitted to drive, operate machinery, work, or supervise others.

Outputs are purely theoretical estimates and cannot predict blood alcohol concentration (BAC) or physical/cognitive impairment accurately. This tool cannot be used as evidence, verification, or a legal defense against driving under the influence (DUI/DWI) or any safety violation.

5. Age Requirement and Lawful Use

This calculator contains alcohol-related educational material and is intended exclusively for individuals who are at least 18 years of age or the legal drinking age in their jurisdiction, whichever is greater. Use of this calculator does not encourage, condone, or promote alcohol consumption, binge drinking, underage drinking, or any unlawful conduct.

6. "As Is" Warranty Disclaimer

To the maximum extent permitted by applicable law, this calculator and its outputs are provided on an "AS IS" and "AS AVAILABLE" basis without warranties of any kind, whether express, implied, or statutory, including but not limited to warranties of accuracy, completeness, reliability, fitness for a particular purpose, or non-infringement.

7. Limitation of Liability

To the fullest extent permitted by applicable law, the site owner, creators, contributors, and data providers shall not be liable for any direct, indirect, incidental, consequential, special, punitive, or reliance-based damages, losses, personal injury, property damage, fines, or legal penalties arising out of or in connection with your use of, or inability to use, this calculator. You assume full, sole responsibility for any decisions made or actions taken based on these outputs.