How Much Caffeine in Decaf Tea

Many people depend on caffeine in the morning to wake them up and give them extra energy to get going during the day. Whether you are a veteran or a newcomer tea lover, you may have heard the word decaf tea. What is decaf tea? How much caffeine is in decaf tea?

Decaffeinated tea has 2 milligrams of caffeine. This tiny amount of caffeine in the drink does not affect the body, thus you can always enjoy your favorite cup of decaf tea anytime. 

What is Decaffeinated Tea?

Decaf or decaffeinated tea refers to tea with almost all caffeine content removed. However, decaffeinated tea is not caffeine-free. The decaffeination process will leave some caffeine in the tea unless highly processed.

What Is Caffeine?

Caffeine is the most consumed drug on the planet found in beverages like tea. The central nervous stimulant appears in a pure form of white crystals. Caffeine is found in nut seeds and in leaves of certain plants such as coffee beans, tea leaves, cocoanuts, and kola nuts. 

Because it is a stimulant, many people consume caffeine to minimize physical fatigue or reduce drowsiness. It also enhances alertness and improves performance. 

How Much Caffeine Is in Tea?

Tea is the most consumed drink worldwide after water. In 2019, Americans consumed more than 84 billion tea servings. This amount is equivalent to over 3.8 billion gallons of tea.

Other sources indicate that nearly 159 million people in the world drink tea daily.

The amount of caffeine in tea is determined by the drink’s origin and preparation with different tea varieties. Caffeine ranges from 41 to 61 milligrams per cup in black, green, and white tea. Studies show that there is no constant trend of caffeine concentration with these different varieties of teas.

Factors Influencing Caffeine Content in a Cup of Tea

The following factors determine the amount of caffeine content and level in your tea:

Amount of tea used. Teabags use the right amount of tea leaves when making tea. If you use the whole leaf, chances are you could add more to your cup, increasing the caffeine level in your tea.

Amount of time taken to brew the tea -The longer you brew your cup of tea; the more caffeine is released.

Water temperature usedHot water releases caffeine in tea leaves faster, affecting caffeine content in the drink. 

Process of Making Decaf Tea

There are four main methods used to prepare decaf tea.

Soak tea in methylene chloride – This process binds the caffeine with methylene molecules. It is, however, not the healthiest method of decaffeinating tea. The tea flavor is also strong, retained, and has natural oils.

Ethyl acetate decaffeination Also referred to as natural decaffeination, the process is almost similar to methylene chloride. Ethyl acetate is also found in tea naturally.

Carbon dioxide (CO2) – Here, tea is cooked under pressure using carbon dioxide, extracting caffeine. Used in loose-leaf teas and tea sachets, CO2 tea decaffeination is the safest method used to decaffeinate tea. The process retains natural tea flavor and its health benefits.

Water processing – This process is more prevalent when decaffeinating coffee. Some teas may use Water processing. Whole tea leaves or tea sachets are soaked in water. Here, caffeine molecules are extracted, and the water is reabsorbed to maintain the drink’s flavor.

How Much Caffeine Content Is in Decaf Tea

The leaves that are used to extract tea come from a plant known as Camellia sinensis, which naturally contains caffeine. As discussed in the introduction, decaffeinated tea is not caffeine-free. The decaffeination process leaves a small amount of caffeine in the drink.

With different varieties of teas, caffeine level varies, but generally, decaf tea has 1-2 grams of caffeine per 100 grams. Interestingly, different teas have different caffeine levels.

Black Tea

Black tea contains 40 to 70 milligrams of caffeine per 8-oz cup served. It carries the highest amount of caffeine content compared to the other teas.

Green Tea

Green tea has relatively low amount of caffeine levels compared to black tea. It is, however, higher than white tea. Green tea has about 35 to 45 milligrams of caffeine content in every 8-oz of teacups served. 

Green tea is a perfect idea if you want to reduce caffeine intake. It also has a gentle stimulant.

White Tea

White tea carries 15 to 20 milligrams per 8-oz cup served, of caffeine level. The tea is less processed than the other teas.

Oolong Tea

This type of tea is semi-fermented and comes with a rich flavor. Oolong tea is a traditional type of tea in china. It also has a rich taste and is more popular than other tea varieties in the US.

Oolong tea has approximately 45 milligrams of caffeine for every 8 oz cup served. 

Herbal Tea


Herbal tea is a good choice if you want to drink tea at night. The tea has zero milligrams of caffeine content. 

Unlike other teas, herbal tea doesn’t come from the Camellia sinensis plant. You make herbal tea by mixing a variety of ingredients including cardamom, ginger, holy basil, mint, and cloves. Besides, you can add ashwagandha leaf, fennel seeds, vanilla, cinnamon, pepper, galangal, lemongrass, honey, nutmeg, and rose petals.

Some of the common herbal teas include:

  • Hibiscus tea
  • Peppermint tea (commonly used worldwide)
  • Ginger tea
  • Chamomile tea
  • Sage tea
  • Passionflower tea
  • Rooibos tea
  • Echinacea tea
  • Lemon balm tea

Frequently Asked Questions (FAQs)

Q. Which decaf tea has the lowest caffeine content?

A. White tea has the lowest caffeine content. 

Q. What is the right amount of decaf tea intake?

A. The recommended amount of decaffeinated tea intake is one cup per day. Six to eight cups of caffeine-free decaf tea are safe to drink in a day.

Q: How much caffeine is in a cup of coffee?

A: An average cup of coffee has about 95 milligrams of caffeine.

Q: Are 10 cups of coffee too much?

A: Taking 8-10 regular cups of tea is okay for a day.

Final Thoughts

Do you now have a clue about how much caffeine is in your decaf tea? I hope this article has helped you realize that caffeine is not only found in coffee but also in decaf tea. 

You can choose to have the proper caffeine intake with different varieties of tea. If you are thinking of doing away with decaf coffee, why not go for a cup of decaf tea. 

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