Food and Drinks

Caffeine in Coffee vs Green Tea – Which Has More Caffeine?

Generally, coffee has more caffeine than green tea. However, there are factors that may influence the quantity of caffeine in both drinks at different times. We will be looking at these factors and exploring the amount of caffeine in coffee vs green tea shortly.

Although coffee and green tea lovers won’t trade their favourite for anything, they live almost constantly comparing the two beverages. Nonetheless, the comparison is an important one so that lovers of both beverages will know how much caffeine each of them has and how they can adjust their daily intake for health reasons.

The Amount of Caffeine in Coffee Vs Green Tea

According to, 8 ounces (240ml) of coffee contains 96mg of caffeine while a similar quantity of green tea contains 29mg of caffeine. However, because different factors may cause variation in the quantity of caffeine contained in each beverage per time, the quantity of caffeine in coffee vs green tea is more often given as ranges. 8 ounces of coffee contains 80 to 100mg of caffeine while the same amount of green tea contains 30 to 50 mg of the substance.

As you can see, coffee’s caffeine content is more than twice that of green tea. It is important to put this into consideration when deciding which of the beverages to make your “mood booster”. While some people are built to tolerate high amounts of caffeine, some may be good with just a little.

However, the recommended daily intake of caffeine is a maximum of 400mg for adults. That for teenager is 100mg and for kids is 2.5mg/kg

Factors That Affect the Amount of Caffeine in Coffee Vs Green Tea

caffeine in coffee vs green tea

Specie/ Variant

Green tea comes in different variants. Similarly, there are different species of coffee beans. The caffeine content of both drinks depends on the specie or variant used. Furthermore, the grind size of a coffee can also affect its content. The finer the size, the more the caffeine released.

Brewing Temperature

Temperature also affects the amount of caffeine in coffee vs green tea. Hot brewed tea and coffee have higher caffeine content than cold brewed ones.

Brewing Process

Caffeine in green tea vs coffee can differ based on their brewing methods. For tea, the brewing method is almost the same as the temperature since it is brewed either cold or hot. Coffee on the other hand has different brewing methods including drip coffee, percolator, French press, and the espresso method

Brewing Time

Generally, the longer the brewing time, the more caffeine is extracted. However, the brewing time for green tea is related to the temperature because a hot-brewed tea will produce more caffeine than a cold-brewed tea that is soaked for longer.

Quantity of Coffee

This is pretty simple, if you put more coffee in the brew, you get more caffeine

Harvest Period

For green tea, the harvest season of the plant can affect the caffeine content. The substance is usually higher in those harvested earlier.

Discover and learn more about beverages and drinks in the articles below. You may want to try some of them.

Effects and Side Effects of Caffeine

Regardless of the amount of caffeine in coffee vs green tea, the substance gives off the same effects when you take either of the beverages. Some of the positive effects of consuming caffeine include

  • Increase in energy level
  • Possible reduced risk of type 2 diabetes
  • Might improve brain health
  • May help weight loss
  • Decrease the possibility of depression
  • Improves cardiac health, etc.

On the other hand, caffeine may pose negative effects on the body including

  • Anxiety
  • Insomnia (lack of sleep)
  • Muscle break down
  • Digestion problems
  • Addiction
  • High blood problems, etc.

Other Health Benefits of Coffee and Green Tea

caffeine in coffee vs green tea

Aside from caffeine, coffee and green tea contain other substances that help to improve health. One very important content in the beverages is antioxidant which plays numerous important health benefits including antiinflammation. Also, the drinks contain substances which work with caffeine to aid weight loss.

Green tea alone contains L-theanine, an amino acid that affects the brain and makes you feel calm, yet alert.

Final Words

We have seen that a general comparison of the caffeine in coffee vs green tea shows that coffee contains more of the substance. However, we have also seen that the caffeine content can vary depending on certain factors. Now, you do not only know the green tea caffeine vs coffee content, but also other substances they contain and how they can be beneficial to you.

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