The amount of caffeine in coffee can vary significantly based on several factors, including the type of coffee bean, the brewing method, and the serving size. However, as a general guideline, an average 8-ounce (240 milliliters) cup of brewed coffee contains approximately 80 to 100 milligrams of caffeine.
Here's a breakdown of the approximate caffeine content in various types of coffee:
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Espresso: A single 1-ounce (30 milliliters) shot of espresso contains about 63 milligrams of caffeine. A double shot contains approximately 125 milligrams.
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Instant Coffee: An 8-ounce cup of instant coffee contains roughly 30 to 90 milligrams of caffeine, depending on the brand and preparation.
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Cold Brew: The caffeine content in cold brew coffee can vary widely based on the coffee-to-water ratio and brewing time. However, an 8-ounce cup of cold brew typically contains between 100 and 200 milligrams of caffeine.
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Decaf Coffee: While decaffeinated coffee is not entirely caffeine-free, the amount of caffeine is significantly lower. An 8-ounce cup of decaf coffee typically contains 2 to 5 milligrams of caffeine.
It's essential to note that individual tolerance to caffeine can vary, and some people may be more sensitive to its effects. It's generally recommended to limit daily caffeine intake to no more than 400 milligrams for healthy adults, which is equivalent to about four 8-ounce cups of brewed coffee. Pregnant women and those with specific health conditions should consult their healthcare provider for personalized caffeine intake recommendations.