Blood Alcohol Content Level Formula - Metabolic Calculators


Based upon % Ethanol:

[Males] AC = (BAC * BW)/(1.22* % Ethanol)
[Females] AC = (BAC * BW)/(1.51* % Ethanol)

Based upon Proof:

[Males] AC = (BAC* BW)/(0.61 * proof)
[Females] AC = (BAC * BW)/(0.75 * proof)

Time factor:

Added to this is 20 mg/dL/hr x hrs since ethanol is consumed.


AC - Alcohol consumption
BAC - Blood alcohol concentration / level in mg/dL
BW - Body weight in kg.

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