How many grams alchohol in a 1 5 oince shot 100 proof?

How many grams of alcohol are in a 1.5‑ounce (100‑proof) shot?

A 1.5‑ounce shot at 100 proof is 50% alcohol by volume (100 proof = 50% ABV).

- Alcohol volume = 1.5 oz × 0.50 = 0.75 oz pure alcohol
- Convert to milliliters: 0.75 oz × 29.5735 = 22.18 mL
- Convert volume to grams (ethanol density ≈ 0.789 g/mL): 22.18 mL × 0.789 = about 17.5 grams of ethanol

So, a 1.5‑ounce 100‑proof shot contains about 17.5 grams of alcohol.

Quick check in “standard drink” terms

In the US, one standard drink is typically 14 grams of pure alcohol.
17.5 ÷ 14 ≈ 1.25 standard drinks.