A standard shot glass typically holds 1.5 ounces (44 milliliters) of liquid in the United States. However, the size can vary depending on the country or specific use:
- United States: 1.5 ounces (44 ml)
- United Kingdom: Usually 1 ounce (28 ml)
- Australia: Often 1.5 ounces (45 ml)
- Canada: Around 1.5 ounces (44 ml)
So, if you're measuring a shot for a cocktail or drink recipe, 1.5 ounces is the most common standard in the U.S.