A shot glass, or “shooter,” is produced in many small sizes and range from 1-2 fluid ounces. Measurements for the shot glass vary by country with the United States having one of the larger sizes of shot glass and Germany having one of the smaller shot glass sizes. Two-ounce shot glasses are sometimes called a “double shot.” A single ounce shot glass can also be referred to as a “Pony.”

A shot glass comes in a variety of shapes and sizes, all typically falling in the same fluid ounce range. Many shot glasses have heavy glass bottoms so they can be “slammed” onto the bar.

Ordering a “shot” in Germany may result in a drink that's 20mL (0.67 oz.), while a United States shot would yield 28mL of liquid.