How Much Caffeine in a Cup of Coffee? A Detailed Guide

This is a detailed guide to the caffeine content of different types and brands of coffee.

Coffee is the biggest dietary source of caffeine.

You can expect to get around 95 mg of caffeine from an average cup of coffee.

However, this amount varies between different coffee drinks, and can range from almost zero to over 500 mg.

This is a detailed guide to the caffeine content of different types and brands of coffee.

Caffeine content is affected by the type of coffee bean, roast style, how the coffee is prepared and the serving size.

The average caffeine content of an 8-oz, brewed cup of coffee is 95 mg.

A single espresso or espresso-based drink contains 63 mg, and decaf coffee contains about 3 mg of caffeine (on average).

An 8-oz, brewed coffee from Starbucks contains 180 mg of caffeine.

A single espresso and espresso-based drinks contain 75 mg, while an 8-oz cup of decaf coffee contains about 15 mg of caffeine.

 As an estimate, a small cup of brewed coffee contains 109 mg of caffeine. Espresso contains about 71 mg, and decaf has about 8 mg.

 while a single espresso contains 75 mg. Interestingly, their decaf coffee may contain as much as 53-128 mg of caffeine.

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