Need caffeine to get through the day but don’t want to overdo it? Knowing the level of caffeine in tea and in coffee could help you choose the right drink.

If you’re like most people, you need at least one caffeinated drink to boost your energy daily. Some would take a caffeinated drink in the morning and then another one mid-day to get them through the rest of their working hours.

While caffeine provides the energy boost you need, too much of it could be bad for you. That’s why many people are conscious about their caffeine intake. A common way to avoid taking in too much of it is to compare the caffeine in tea and caffeine in coffee.

According to The U.S. Food and Drug Administration (FDA), here’s how much caffeine there is in coffee depending on how it is prepared.

Caffeine in Coffee

Caffeine in tea vs caffeine in coffee

100 grams of brewed coffee grounds prepared with tap water has 40 milligrams of caffeine in it. 100 grams of instant coffee powder with water gives you 26 milligrams of caffeine while restaurant-prepared brewed espresso of the same amount has a whooping 212 milligrams of caffeine.  

Caffeine in Tea

caffeine in tea

Caffeine in tea would depend on how much tea you use and how long you brew it. As an overview, the FDA has provided the following information:

100 grams of brewed tea prepared with tap or distilled water has 20 milligrams of caffeine. Lemon-flavored tea prepared and sweetened with sugar of the same amount without ascorbic acid has 124 milligrams of caffeine.  

Here's a guide for brewing times: 

  • Black Tea
    • 100 milliliters of black tea brewed for one minute contains 19 milligrams of caffeine.
    • Black tea of the same amount brewed for three minutes has 28 milligrams of caffeine.
    • 100 milliliters of black tea brewed for five minutes will give you 31 milligrams of caffeine. 
  • Green Tea
    • 100 milliliters of green tea brewed for one minute contains 9 milligrams of caffeine.
    • Green tea of the same amount brewed for three minutes has 18 milligrams of caffeine.
    • 100 milliliters of green tea brewed for five minutes will give you 21 milligrams of caffeine. 
  • Oolong Tea
    • 100 milliliters of oolong tea brewed for one minute contains 9 milligrams of caffeine.
    • Oolong tea of the same amount brewed for three minutes has 20 milligrams of caffeine.
    • 100 milliliters of oolong tea brewed for five minutes will give you 27 milligrams of caffeine.

We understand that all these numbers can be confusing and hard to remember. When choosing between coffee and tea, just keep in mind that for every 100 grams of brewed coffee, you get 40 milligrams of caffeine. 100 grams of brewed tea leaves, on the other hand, only gives you 20 milligrams of caffeine. 

If you're trying to cut back on caffeine, switching to tea is a great idea. Green tea is the best choice as it has the lowest amount of caffeine among the three types of tea we discussed in this post. 

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Author

Aileen

Aileen is a content manager and tea enthusiast. If she's not crafting interesting content, she's busy searching for the perfect cup of tea and swooning over Earl and Troy, her cats.

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