Alcohol Metabolism Calculator

Calculate alcohol metabolism time from your drinks, body weight, and gender. See estimated sober time and blood alcohol concentration.

Weight (kg)

Gender

Male Female

Drinking start time

Enter drink amounts

Beer (ml) - 5% ABV

Wine (ml) - 12% ABV

Sake (go/cups) - 15% ABV

Spirits/Shochu (ml) - 25% ABV

Highball/Mixed drink (ml) - 7% ABV

Custom drink (ml)

Custom ABV (%)

Important Notice

These results are estimates based on general values. Actual metabolism varies greatly by individual constitution, health, diet, and medications.
Do NOT use these results to decide whether you can drive.
Drunk driving is strictly prohibited by law in most countries.
If you have consumed any alcohol, do NOT drive regardless of this tool's results.
If you feel unwell or have consumed large amounts, please consult a medical professional.

How It Works

This tool calculates alcohol metabolism time using the Widmark formula and standard metabolism rates.

Calculation Method

Alcohol (g) = Volume (ml) x ABV (%) / 100 x 0.8 (alcohol density)
BAC (%) = Alcohol (g) / (Weight (kg) x Body water ratio) x 100
Metabolism time = Alcohol (g) / (Weight (kg) x 0.1)
Body water ratio: Male 0.68, Female 0.55

FAQ

Q. Does alcohol metabolism speed vary between people?

A. Yes, there is significant individual variation based on weight, gender, age, genetics, liver health, and food intake. These results are only estimates.

Q. How is blood alcohol concentration calculated?

A. BAC is calculated using the Widmark formula: BAC = Alcohol consumed (g) / (Body weight (kg) x Body water ratio) x 100.