An average 8–ounce (oz) cup of coffee contains around 80–100 milligrams (mg) of caffeine. However, the caffeine content can vary considerably depending on several factors such as coffee type, brewing ...

Most cold brews have less caffeine than hot coffees. But caffeine content in a cold brew can vary depending on such factors as brand, bean-to-water ratio, and brewing time. Cold brew coffee is a type ...

An 8-ounce (230-ml) cup of green tea contains between 30 and 50 milligrams of caffeine. Bagged teas tend to be more caffeinated than loose leaf teas. Green tea is a popular drink with many health ...