which has more caffeine green or black tea

which has more caffeine green or black tea

About the Caffeine Content of Green and Black Tea

Almost everyone knows that tea can provide a boost of energy that other beverages cannot. But, if you’re looking to determine which has more caffeine between green and black tea, you may be surprised to find out that they’re not as different as you think.

Caffeine Content of Green Tea

Green tea contains caffeine amounts that range anywhere from 30-50 mg per 8-ounce cup, depending on the type of green tea and the quality of the leaves used. This makes green tea a mild stimulant.

Caffeine Content of Black Tea

Contrary to green tea, black tea can contain anywhere from 40-90 mg of caffeine per 8-ounce cup. The amount depends on the variety as well as the quality of the leaves.

Does Brewing Method Affect Caffeine Content?

Yes, the brewing method can affect the final amount of caffeine in your cup. For example, if you use more tea leaves and steep them for a longer time, your cup will have a higher caffeine content than one that is made with fewer leaves and steeped for a shorter time.


As you can see, black tea generally has more caffeine than green tea, however, there can be considerable amounts of variability based on the specific tea used and the brewing method.

If you are sensitive to caffeine, it is important to measure carefully. Knowing the caffeine content of the tea you’re drinking can help you stay within your recommended dosage and prevent any unwanted side effects.


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