Calcolatrice Tasso Alcolemico Gratuita

Stima il tuo tasso alcolemico con la formula di Widmark.

drinks

1 standard drink = 12 oz beer, 5 oz wine, 1.5 oz liquor

lbs
hours

Estimated BAC

0.040 %

Hours Until BAC = 02.7 hours

Estimated BAC vs Standard Drinks

Vedi formula →

Formula

Widmark Formula for BAC

BAC = (Alcohol in grams / (Body weight in grams x r)) x 100 - 0.015 x hours

Where:

  • 1 standard drink = 14 grams of alcohol
  • r = 0.73 for males, 0.66 for females (body water ratio)
  • 0.015 = average BAC reduction per hour

    • Legal Limits

    BACStatus 0.00%Sober 0.02-0.04%Mild effects 0.05-0.07%Impaired 0.08%+Legally intoxicated (most US states)

    Esempio Risolto

    A 180 lb male who had 3 drinks over 2 hours.

    1. 01Alcohol = 3 x 14 = 42 grams
    2. 02Weight = 180 x 453.6 = 81,648 grams
    3. 03BAC = (42 / (81,648 x 0.73)) x 100 - 0.015 x 2
    4. 04= 0.0705 x 100 - 0.030 = 0.041%

    Domande Frequenti

    How long does it take to sober up?

    Your body eliminates alcohol at roughly 0.015% BAC per hour. There is no way to speed this up. Coffee, food, and cold showers do not lower BAC.

    What is the legal limit?

    In most US states, the legal BAC limit is 0.08% for adults. Some states have lower limits. For commercial drivers it is 0.04%. For under-21 it is typically 0.02% or zero.

    How accurate is this calculator?

    The Widmark formula provides an estimate. Actual BAC varies with food intake, drinking speed, medications, liver function, and individual metabolism.

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