Caffeine In Green Tea: Will It Pep You Up As Much As Coffee?

Most of us have turned to caffeine for an energy boost in a time of need, whether it’s the morning of a big race or the night before an important exam. Coffee and soda are obvious choices, but is green tea caffeinated? What is the caffeine content of green tea? Is it enough to help power through your next challenge? Is it so much that you should be careful about your intake? Let’s find out.

Does Green Tea Have Caffeine?

Yes, green tea does contain caffeine. This is one of the few agreed-upon facts among the myriad of green tea claims, according to the National Institutes of Health (1).

Caffeine is a naturally occurring stimulant found in many foods and drinks, including chocolate, green tea, black tea, and coffee. It is the most widely used psychoactive drug in the world. Consuming caffeine is primarily known for its ability to reduce sleepiness and provide an energy boost.

How Much Caffeine Is In Green Tea?

There are approximately 30 to 50 mg of caffeine per 8-ounce cup of green tea. But the caffeine levels in green tea are more variable than you might expect.

Younger green tea leaves have less caffeine than leaves that are harvested later. Brewing with hotter water or a longer steeping time will yield a higher caffeine content by increasing extraction. For the same reason, the finer tea leaves in a tea bag will produce a more caffeinated brew than steeping loose tea leaves.

How much caffeine is in a cup of green tea?

A cup of green tea caffeine content is between 30 and 50 mg of caffeine, equating to 45 and 75 mg in 12 ounces and 60 and 100 mg in a large 16-ounce brew. 

Does Arizona Green Tea Have Caffeine?

Yes, Arizona Green Tea has caffeine, but not very much. Each 8-ounce serving of Regular or Diet Arizona Green Tea has just 7.5 mg of caffeine, which should tell you a lot about the actual pure green tea content of these drinks.

Caffeine In Green Tea Vs Coffee

Green tea contains less caffeine than coffee, roughly half to a third of the amount. An 8-ounce serving of green tea has about 40 milligrams of caffeine versus about 100 mg for the same amount of brewed coffee. The exact amount of caffeine can be affected by the brand, recipe, and brewing method, which is why there is some variability.

Matcha Green Tea Caffeine Vs Coffee

Matcha is a form of green tea made from the same leaves of the Camellia sinensis plant, but the dried tea leaves are ground into a powder. When brewing traditional green tea, the tea leaves are steeped in hot water before being filtered out. When making powdered green teas like matcha, the powder is whisked into hot water and consumed by the tea drinker.

Matcha green tea is thus high in caffeine compared to given green tea bags. It also has more antioxidants and other nutrients. When it comes to matcha green tea caffeine vs coffee, they are similar. Depending on quality, matcha contains 20 to 40 mg of caffeine per gram. A typical serving is 2 to 4 grams, which amounts to between 40 and 160 mg per 8 ounces brewed.

Caffeine In Decaf Coffee Vs Green Tea

There is far less caffeine in decaf coffee than in green tea. Depending on the decaffeination method, decaf coffee contains about 2 to 4 mg of caffeine per 8 ounces. Decaf green tea is similarly low in caffeine, with about 4 mg. If that caffeine level still seems too high for you, there are plenty of caffeine-free coffee alternative options to reduce your caffeine intake level.

Finally, What Is Green Tea?

Green tea is tea made from Camellia sinensis, aka the tea plant. This same plant is used to make black and oolong teas, but the processing method is different. To make green tea, the producers steam the leaves, then pan-fry and dry them.

Health Benefits of Green Tea

Brewed green tea is 99.9% water, but it has been credited with numerous health benefits due to its antioxidant content. Some of these green tea health benefits are more credible than others. The best studies report that green tea may help inhibit certain cancers, and green tea may also lower the risk of cardiovascular disease (2). It has been linked to numerous weight loss claims, none of which have been proven in scientific studies.

Check out this video from Dr. Mike Varshavski to learn more about the actual versus over-hyped benefits of green tea:

Final Thoughts

The amount of caffeine in green tea is moderate, making it an excellent way to enjoy a slight energy boost without the potential pitfalls of overindulging. If you’re sensitive to caffeine and find coffee leaves you jittery or anxious, try green tea instead!