What is a Jigger? Types of Jiggers, Measurements, Styles & More

Jiggers are among the most basic tools that a successful bartender needs. Many seasoned bartenders pour directly from a bottle with the aid of a pourer. However, unless you have impeccable estimation skills, you won’t be able to have a consistent cocktail. To be consistent and keep your patrons coming back for more, the jigger is a tool you should not take for granted. 

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Jigger Measurements

Jiggers come in a variety of measurement graduations. Some jiggers have inner markings, either etched or printed, on the side of the jigger. A single measure jigger is easier to use but because of the fad of multi-tasking, most jiggers have 1 oz and 1 ½ oz marking on one side and ½ oz and 1 oz on the other side. Others are marked in ounces, some in milliliter while still others are in combination. 

How many ounces are in a jigger? 

The most common capacity of the jigger is 1 oz (30ml) on one side and 1 ½ oz (45ml) on the other. Others have 1 ½ oz on the larger side and ¾ oz on the smaller side. Still others have 2 oz on one end and 1 oz on the other. Usually, a jigger shot is 1 ½ oz based on the capacity of the standard jigger while the smaller (1 oz) is usually called the pony shot. 

How many ounces are in a shot?

As earlier mentioned, one shot equals to 1 ½ ounces or 45 ml. There are cocktail recipes that call for 1 shot of rum, whiskey, or gin as an ingredient, while others ask for a double shot. Depending on the country where the recipe originated, a double shot could mean 2 ounces (60ml) to 3 ⅓ ounces (100ml). 

Jigger Styles

There are numerous styles of jiggers, each with its nuances. Pick the one that is most functional to you and will make your work the easiest for you. 

Double Jiggers

Double jiggers are also referred to as the basic bar jigger. They can come in different styles and measurements as well. As its name signifies, it has two cavities - one with a bigger capacity than the other. 

Japanese Jiggers

Technically, a Japanese jigger is a double jigger. It is slimmer than the traditional double jigger which is shorter and bulkier. The Japanese jigger, on the other hand, is easier to maneuver around the bar. 


By the way, it is important to note that 1 ounce is dependent on the country where the recipe originated. It may mean 1 US fluid ounce which is 29.57 ml or closest to 30ml while a 1 UK fluid ounce is 28.4ml. If using a jigger, be sure to be consistent in the kind of jigger you are using. It is best to get the ones with both imperial and metric markings as it is easier to be consistent here, even if a different bartender who is not familiar with the nuances of your jigger. 

Another important thing to remember is to brief the next bartender, especially if he is new, of the measurements you are using. If the recipe calls for an ounce or any increments and your jigger is in milliliters, be sure to inform of whether you are using a US or UK fluid ounce. Better yet, use the standard 30ml equivalent for 1 ounce for less confusion. Find more jiggers here and take your unique pick if you are into it. 

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