How much caffeine is in one 20 oz cup of coffee?
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4 min read
According to data from major coffee chains, a single 20 oz cup of coffee can contain anywhere from 270 mg to nearly 500 mg of caffeine. The exact amount of caffeine in one 20 oz cup of coffee depends heavily on the brewing method, coffee bean type, and roast level, with the potential to reach or exceed the daily recommended intake for adults.
