How Much Caffeine Is in a Cup of Coffee? mg by Size, Brew and Brand (2026)
The short answer: an 8 oz cup of brewed coffee has about 95 mg of caffeine. But most people drink 12 to 20 oz, and the FDA puts a 12 oz cup of regular brewed coffee at 113 to 247 mg. Size and brew method change the number more than the brand of coffee does. This guide is for information only. It is not medical …