DO NOT DRIVE BASED ON THESE RESULTS.. This BAC calculator provides an estimate only. By using this calculator you accept full legal responsibility for your actions and release this site from all liability.

The most accurate BAC calculator online

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Breathalyzers Know exactly how drunk you are

BAC Effects Chart
BACEffects
0.00–0.05%Relaxation, warmth, and confidence
0.05–0.08%Euphoria and increased sociability
0.08–0.12%Driving is illegal
Impairment of judgement, memory, reaction time, and speech
Dizziness or nausea, especially when drinking quickly or with low tolerance
0.12–0.16%Severe impairment of judgement, memory, reaction time, and speech
Mood swings (anger, depression, and/or unease)
0.16%+Confusion and memory loss (blackouts)

Four Loko BAC Calculator

A single 23.5 oz (695 ml) Four Loko at 14% ABV contains roughly 5–6 standard drinks — like drinking a six-pack in one can. Enter your weight, sex, and when you started to estimate your BAC. Four Loko is already filled in above.