Caffeine Level
Serving Size
fl. oz cup
Caffeine Strength
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The caffeine level in coffee can vary due to the brewing method used. This listing is referring to coffee made using Arabica coffee beans. For coffee made using Robusta beans, see here

Brewed coffee refers to any method of coffee preparation where hot water comes in contact with coffee grounds for an extended period of time. Generally, for brewed coffee, two tablespoons of ground coffee is used per 6 fluid ounces of water. 

Coffee Brewing Techniques

There are a number of techniques in brewing coffee: concentrate brewing, Turkish or Greek, vacuum brewing, percolating, or the French press (also called press pot or plunger coffee) and drip or filter coffee.

Coffee Caffeine by Brewing Methods

Like all coffee drinks, caffeine levels vary greatly - due to variations in the coffee blend, the exact amount of ground coffee used, and brewing technique.

Brewed Coffee Type Caffeine per 8 fl. oz.
Drip or Filter 115-175mg with an average of 145mg
French press or plunger 80-135mg with an average of 107.5mg
Percolated 64-272mg with an average of 200mg
Boiled (Turkish or Greek) 160-240mg with an average of 200mg

The value of caffeine in brewed coffee featured above is an average, with values generally between 64 and 272 milligrams per cup.

Because brewed coffee requires that the water is in contact with the grinds for a long time, this leads to a higher caffeine concentration (and sometimes an over-extracted taste).

Drip Coffee (Filter Coffee) is the Most Popular

Drip coffee or filter coffee is perhaps the most popular form of brewed coffee, at least in the USA. This is the method used by Starbucks, Dunkin Donuts, McCafe as well as countless other restaurants.

Even K-cups are a type of drip brewed coffee.

Caffeine Content of Coffee Brands

Drill down into caffeine amounts for each outlet.

Where To Buy Coffee

Ingredients in Coffee

Water and 100% Arabica Coffee Beans

Sugar content: Contains no sugar.

Compare sugar levels of other drinks

Caffeine Comparisons

Coffee contains 20.38 mgs of caffeine per fluid ounce (68.90mg/100 ml).

Caffeine (mg) per Ounce
10090807060 5040302010 0 Coffee 5 Hour Energy Espresso Shot Coca-Cola Classic
Total Caffeine (mg)
400360320280 24020016012080 400 Cup of Coffee Can of Coca-Cola Classic Bottle of Redline Energy Drink Can of Monster Energy Drink Can of Red Bull
Data Sources: Refer to relevant sources here