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How much caffeine in coffee?

Brewed coffee

Brewed coffee, which is also called filter coffee, involves brewing ground coffee beans in hot water. This mixture usually sits in a paper, metal, or plastic filter that separates the grounds from the brewed coffee.

People can make brewed coffee in a variety of ways, usually using a filter, a percolator, or a French press.

An 8-oz cup of brewed coffee typically contains around 95mg of caffeine.

Decaffeinated brewed

Despite its name, decaffeinated, or decaf, coffee still contains some caffeine. For instance, an average 8-oz cup of brewed decaf coffee contains around 2mg of caffeine 

Cold brew

Cold brew coffee is different than iced coffee, which simply involves serving brewed coffee over ice. To make cold brew coffee, manufacturers steep the coffee grounds in water at room temperature for anywhere between 10 & 22 hours 

A found that a 12-oz cup of cold brew coffee can contain between 153 mg and 238 mg of caffeine.

Instant coffee

Making this type of coffee involves adding hot water to instant coffee powder or granules.

Instant coffee usually contains less caffeine than freshly brewed coffee. A typical 8-oz cup of regular instant coffee contains about 62mg of caffeine.


Espresso is a strong coffee beverage that people make by forcing hot water or steam through very fine coffee grounds. Making espresso coffee involves the use of a machine or stovetop moka pot.

Espresso serving sizes are generally much smaller than those of brewed coffee because of the high caffeine content.

A single 1-oz shot of espresso contains approximately 63mg of caffeine.