A standard shot typically contains 1.5 ounces (44 milliliters) of liquid in the United States. However, the exact amount can vary depending on the country and context:

• United States: 1.5 ounces (44 ml)
• United Kingdom: Usually 25 ml or 35 ml, depending on the establishment
• Australia: Typically 30 ml

If you're measuring for a cocktail or recipe, 1.5 ounces is the most common standard shot size in the U.S. Cheers!