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How Much Alcohol to Stay Pleasantly Tipsy

Just enter your body weight and sex to instantly calculate the pure-alcohol amount that keeps you tipsy (blood alcohol concentration around 0.05–0.10%), along with rough servings (ml) of beer, sake, wine, shochu and whisky. A handy reference for not overdoing it.

Input

From your body weight and sex, this estimates the amount of pure alcohol that keeps you pleasantly tipsy (blood alcohol concentration of about 0.05–0.10%), plus a rough serving for each type of drink. How alcohol affects you varies greatly from person to person, so treat these as reference figures only.

kg

Result

Upper limit of pure alcohol to stay tipsy (estimate)

approx. 42g

The pure alcohol that matches the tipsy stage (BAC 0.05–0.10%) is about approx. 21–42 g.

Tipsy lower limit (BAC 0.05%)

approx. 21 g

Tipsy upper limit (BAC 0.10%)

approx. 42 g

Calories if you drink to the limit

approx. 298 kcal

Estimated tipsy-limit serving by type of drink

Type of drinkABVServing
Beer5.0%approx. 1,050 ml
Wine12.0%approx. 437 ml
Sake15.0%approx. 350 ml
Shochu25.0%approx. 210 ml
Whisky40.0%approx. 131 ml

* These are amounts if you drink each one on its own. When mixing drinks, base your judgment on the total pure alcohol.

How it works

  • From your body weight and sex, this calculates the upper limit of pure alcohol that keeps you pleasantly tipsy (blood alcohol concentration of about 0.05–0.10%).
  • The calculation uses the Widmark formula: blood alcohol concentration (%) = pure alcohol (g) ÷ (body weight (kg) × r × 10). The distribution factor r is 0.7 for men and 0.6 for women, and the pure alcohol amount is solved backward from the target concentration.
  • The resulting pure alcohol is converted into a drinking volume (ml) for beer 5%, sake 15%, wine 12%, shochu 25% and whisky 40% (pure alcohol (g) = volume (ml) × ABV (%) ÷ 100 × 0.8).
  • How alcohol affects you depends heavily on your constitution (how strong your metabolizing enzymes are), your condition, whether you are on an empty stomach, and your drinking pace. The figures shown are average estimates only.
  • Women, older adults and those who handle alcohol poorly should aim for less than the displayed amounts. If you are pregnant, breastfeeding, taking medication, or under the legal drinking age, avoid alcohol.
  • This tool gives estimates based on a general formula and is not a diagnosis or medical advice. Always drink in moderation, and consult a doctor if you have any health concerns.