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Blood Alcohol Calculator (BAC)

Patient weight:kglbs
Percentof body qualified of taking in alcohol (Usual ranges): 
Time invested drinking ortime elapsed.  Hours (Enter zero because that acute ingestion.)
Volumeconsumed:mlFluid oz Numberof drinks:See table listed below forcommon volumes and also percentages.

You are watching: Bac can be determined solely from the amount of alcoholic beverages consumed.

Alcoholunits: percent (ABV)proof (e.g. 50% or 100 proof)

Disclaimer: This is only a stormy estimatebased on population averages and also does no take right into account existing diseasestates, drug interactions, or age.

Typical Volumes and also Concentration


Background Info

Definition: Blood alcoholconcentration (BAC) is the quantity of alcohol in an individual’s body,measured by the weight of the alcohol in a volume of blood. TheBAC border determines the maximum quantity of alcohol that deserve to be consumedbefore the is illegal to operate a motor vehicle on a public road.This regime summarizes several of the impacts that might be viewed based onthe calculation blood alcohol concentration. Generally, over there is widevariation in alcohol tolerance among individuals and therefore thepredominant impacts may vary. Theeffects the alcohol intoxication are considerably influenced by individualvariations amongst users. Some customers may become intoxicated in ~ a muchlower blood alcohol concentration. Handicap can an outcome fromany level above 0.00. Also, the degree of impairmentrises drastically as the BAC rises.An individual’s BAC depends uponthat person’s gender, weight, metabolism, time period over i m sorry thealcohol was consumed and the quantity of food in the stomach front todrinking. Back a person’s BAC can be estimated, the levelcannot be identified solely by the number of drinks consumed, and cannotbe precisely calculated by a who height and also weight. In single-vehicle crashes, the relativerisk the a driver with BAC between .08 and also .10 is at least 11 timesgreater 보다 for vehicle drivers with a BAC that zero, and 52 times greater foryoung males. Further, countless studies have shown that even tiny amounts ofalcohol have the right to impair a person’s capability to drive. ABW versus ABV??The concentration of alcohol in a beverage is usually stated as thepercentage the alcohol through volume (ABV) or as proof. Part tables maylist the alcohol concentration together ABW (alcohol through weight).To transform ABW to ABV, you should divide the ABW through the specific gravityof alcohol i beg your pardon is ~0.787Therefore 4.3% ABW/ 0.787 = 5.46% ABV. Alternatively you canmultiply the ABW (alcohol by weight) by 1.271.Summary: ABV = ABW / 0.787 or ABV = ABW x 1.271

Alcohol Content


AlcoholContent (in Percent) the Selected Beverages
BeverageAlcohol content (%)Usual offer size
Beers (lager)3.2 - 4.01 can/bottle = 355 ml = 12 fl. Oz.
Ales4.51 can/bottle = 355 ml = 12 fl.oz.
Porter6.01 can/bottle = 355 ml = 12 fl.oz.
Stout6.0 - 8.01 can/bottle = 355 ml = 12 fl.oz.
Malt Liquor3.2 - 7.01 can/bottle = 355 ml = 12 fl.oz.
Sake14.0 - 16.0one shot = 44 ml = 1.5 fl. Oz. (Range:1.25 come 1.5 fl.oz. Or 37 - 44 ml)
Table wines7.1 - 14.0one glass = 148 ml = 5 fl. Oz.
Sparkling wines / Champagne 8.0 - 14.0one glass = 148 ml = 5 fl. Oz.
Fortified wines14.0 - 24.0one glass = 148 ml = 5 fl. Oz.
Aromatized wines15.5 - 20.0one glass = 148 ml = 5 fl. Oz.
Brandies40.0 - 43.0one glass = 148 ml = 5 fl. Oz.
Whiskies40.0 - 75.0one shot = 44 ml = 1.5 fl. Oz. (Range:1.25 to 1.5 fl.oz. Or 37 - 44 ml)
Vodkas40.0 - 50.0one shoot = 44 ml = 1.5 fl. Oz. (Range:1.25 to 1.5 fl.oz. Or 37 - 44 ml)
Gin40.0 - 48.5one shooting = 44 ml = 1.5 fl. Oz. (Range:1.25 come 1.5 fl.oz. Or 37 - 44 ml)
Rum40.0 - 95.0one shoot = 44 ml = 1.5 fl. Oz. (Range:1.25 to 1.5 fl.oz. Or 37 - 44 ml)
Tequila45.0 - 50.5one shoot = 44 ml = 1.5 fl. Oz. (Range:1.25 come 1.5 fl.oz. Or 37 - 44 ml)

AlcoholContent that Some typical DrinksMixed drink are based on typical drink recipes utilizing 80proof liquor. The quantity of alcohol in actual combined drinksmay vary.

See more: How Long Is 55Cm In Inches, Conversion 55 Cm Into Inches

DrinkAlcohol Content
Manhattan1.15 oz. (34 ml)
Dry Martini1.00 oz. (30 ml)
Malt liquor -12oz. (355 ml)0.71 oz. (21 ml)
Airline miniature0.70 oz. (21 ml)
WhiskeySour/Highball0.60 oz. (18 ml)
Table alcohol - 5 oz.(148 ml)0.55 oz. (16 ml)
Beer - 12 oz. (355ml)0.54 oz. (16 ml)
Reduced AlcoholBeer0.28 oz. (8 ml)

Reference(s)

Drug Abuse Handbook. Second edition. Edited by Steven B. Karch. CRCPress/Taylor & Francis (Boca Raton), 2007.Gullberg, R.G. And also Jones, A.W., "Guidelines for Estimating the Amountof Alcohol consumed From a solitary Measurement the Blood AlcoholConcentration: Re-Evaluation of Widmark"s Equation", Forensic ScienceInternational, Vol.69, 1994Widmark, E.M.P., Principles and Applications of Medicolegal AlcoholDetermination, Davis, CA: Biomedical Publications, 1981, pp. 107-108.