How much caffeine in a cup of coffee.  Best guide 2020
1 of The Best guide: how much caffeine in a cup of coffee.

How much caffeine in a cup of coffee. Best guide 2020

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How much caffeine in a cup of coffee: people ask me about the caffeine in coffee and black and green tea, I have received some questions like: 

  1. How much caffeine in a cup of coffee 
  2. How much caffeine in a cup of coffee vs Espresso / Nespresso 
  3. How Much Caffeine in a cup of coffee at Starbucks 
  4. How much caffeine in a cup of coffee compared to green and black tea 
  5. How much caffeine in a cup of coffee 8 oz and 12 oz 
  6. How much caffeine in a cup of coffee vs energy drink Starbucks

And I’ve got some more questions. I’ll answer them in the next article. Don’t worry about it. 

13 min reading time

Roasting coffee beans

Caffeine is an alkaloid found primarily in coffee beans, tea leaves, and cocoa beans. Alkaloids are natural azo compounds coffee beans that have a specific effect on living organisms. Nicotine and various opiates also belong to the alkaloid family.

Fresh coffee beans and the drink called coffee do not have the same caffeine content. The level even varies between different kinds of beans. What is preserved in coffee depends on:

  1.    The roasting temperature,
  2.     The level of grinding
  3.     The duration of infusion
  4.     The infusion temperature

How much caffeine is in a cup of coffee

1 of The Best guide: how much caffeine in a cup of coffee.


1 of The Best guide: how much caffeine in a cup of coffee.

to know how much caffeine is in a cup of coffee can contain is very relative. It depends on the quantity and quality of the ground beans used in the blend of this popular beverage.

It is estimated that a single cup may contain 50 to 400 milligrams of caffeine. This amount will depend on how much coffee and water is in each cup.

We also know that a 10-gram dose could be lethal to the human body. It would take 25 cups of high concentration and in a very short period to start experiencing complications.

What is the caffeine content in different types of coffees?

1 of The Best guide: how much caffeine in a cup of coffee.


1 of The Best guide: how much caffeine in a cup of coffee.

The caffeine content depends on the type of coffee consumed and the method of preparation.

It should be remembered that coffee is an agricultural product, originating in tropical areas; the great variability in caffeine and polyphenol and other components is also linked to the soil of origin.

The caffeine contents are as follows:

Depending on the variety: for a 150 ml cup

  • Robusta: 150 to 250 mg
  • Arabica: 50 to 120 mg
  • Decaffeinated: 1 to 6 mg

According to the preparation:

  • 1 espresso ( 33ml) : 40 to 110 mg
  • 1 cup of filter coffee ( 150 ml) : 60 to 180 mg
  • 1 cup of soluble coffee (150 ml): 40 to 120 mg

The caffeine content of coffee roasts

Many people believe that darker roasts contain more caffeine because they have a stronger flavor. However, darker roasts generally have lower caffeine levels than lighter roasts. This is because the prolonged heat of a heavier roast breaks down the caffeine molecule. If you’re not sure how well your coffee is roasting, just look at the color. A lighter color usually means more caffeine.

The caffeine content of ground coffee beans

Different levels of coffee grind are used for different preparation methods. For example, espresso and Turkish coffee require much finer levels of a coffee grind than drip-brewed coffee. Assuming that the method of preparation is the same, the finer the coffee grind, the higher the caffeine content of the coffee.

What is the coffee with the most caffeine?

If you consider all these factors together, the coffee with the highest caffeine content would be a finely ground roasted robusta coffee (as in the case of ground Turkish coffee or ground espresso) that has been brewed with a filter coffee maker for five minutes or more. Using more than the usual 30 grams of coffee for 350-450 ml of water will also increase the caffeine level in your coffee.

Which coffee contains the least caffeine?

Dark roasted, coarsely ground Arabica coffee beans that are brewed quickly will have the lowest caffeine content. Be sure to check that you use no more than 30 grams per 350-450 ml of water. For a very low caffeine coffee, use decaffeinated coffee or a blend with Excelsa beans.

Despite popular belief, decaffeinated coffee is not caffeine-free. A 450 ml Starbucks decaffeinated coffee still contains about 12.5 milligrams of caffeine.

Coffee drinks with milk and other additives often contain less caffeine per serving.

How much caffeine in a cup of coffee vs espresso

1 of The Best guide: how much caffeine in a cup of coffee.


1 of The Best guide: how much caffeine in a cup of coffee.

A short espresso made with 7 grams of roasted and relatively coarsely ground Robusta beans contains less caffeine than most other types of espresso. For a very low caffeine ristretto, use decaffeinated coffee or a blend with Excelsa beans.

What type of espresso contains the least caffeine?

Although people tend to think that espresso is very high in caffeine, a cup of espresso is generally lower in caffeine than a cup of coffee. It may be more concentrated, but espresso is lower in caffeine than brewed coffee.

Caffeine in espresso (by brewing method)

Espresso is a type of concentrated coffee drink obtained by extracting roasted coffee beans with heat and pressure. Espresso drinks such as lattes and cappuccinos contain different levels of caffeine. The following are some estimates of caffeine levels in various espresso beverages:

  • Simple espresso: 29-100 mg (often around 75 mg)
  • Double dose espresso: 58-185 mg (often around 150 mg)
  • Decaffeinated espresso, single-dose: approximately 8 mg
  • Decaffeinated espresso, double dose: approximately 16 mg

How much caffeine in a cup of coffee and tea | Starbucks…

1 of The Best guide: how much caffeine in a cup of coffee.


1 of The Best guide: how much caffeine in a cup of coffee.

It depends on the caffeine content of a drink or dish. For you don’t only absorb the caffeine from coffee and energy drinks (and here the sugar level is certainly even more worrying), but also from tea (theine being a synonym for caffeine), coca, and even chocolate. We will take a closer look at the quantities of these different foods.

Caffeine in coffee (by the method of preparation)

Although caffeine levels in coffee vary, these lists of caffeine levels in coffee will give you a general idea of what to expect from some of your favorite coffee drinks.

  •  Boiled coffee (Greek or Turkish coffee, measured per 225 ml): 160-240 milligrams (averaging about 200 milligrams)
  • Arabica drip-brewed coffee (170 ml): 80-130 milligrams (often about 110 milligrams)
  • Robusta drip brewed coffee (170 ml): 140-200 milligrams
  • Decaffeinated drip-brewed coffee (225 ml): 2-12 milligrams, although tests have shown that levels of decaffeinated coffee are sometimes much higher.
  •     Instant coffee (225 ml): 27-173 milligrams (often 65-90 milligrams)
  • Instant decaffeinated coffee    (225 ml): 2-12 milligrams

How much caffeine in a cup of coffee vs green tea

Feel like something a little less intense? Our green teas have between 15 and 45 mg of caffeine per 8 oz (240 ml) cup, about half the amount of caffeine found in black tea. Plus, your body will thank you for the antioxidants you provide with each cup.

How much caffeine in a cup of coffee vs black tea

Black teas contain 10 to 100 mg of caffeine per 8 oz (240 ml) cup, while coffee contains an average of 140 mg per cup. Naturally high in caffeine, black tea is an excellent pick-me-up.

How much caffeine in a cup of coffee vs matcha

One of the reasons why matcha green tea is so popular is its high caffeine content. matcha contains 20 to 40 mg of caffeine per 8 oz (240 ml) cup. But how is it different from regular green tea? Matcha powder is made from finely ground green tea leaves. This means that with each sip, you get all the benefits of the whole leaf (including caffeine). Matcha is also known to provide a long-lasting energy boost without the post-caffeine kick.

How much caffeine in a cup of coffee Starbucks

Starbucks is probably the most famous coffee chain in the world.

The caffeine levels in its coffees are among the highest (by type) you’ll find.

Here are the caffeine levels of a coffee brewed at Starbucks based on the following serving sizes:

  •     Short (20 cL): 180 mg
  •     Tall: (33 cL): 260 mg
  •     Large (45 cL): 330 mg
  •     Venti (55 cL): 415 mg)

Also, a single espresso at Starbucks contains 75 mg of caffeine.

As a result, all small espresso beverages also contain 75 mg of caffeine. This includes lattes, cappuccinos, macchiatos, and Americanos, among others (10).

Starbucks decaffeinated coffee contains 15 to 30 mg of caffeine, depending on the potions served.

Conclusion: 20 cL of Starbucks brewed coffee contains 180 mg of caffeine. A single espresso and espresso drinks contain 75 mg of caffeine, and 20 cL of decaffeinated coffee contains about 15 mg of caffeine.


How much caffeine does each Nespresso capsule contain?

1 of The Best guide: how much caffeine in a cup of coffee.


1 of The Best guide: how much caffeine in a cup of coffee.

The caffeine content in a prepared is approximately 56 to 64 mg. As the Lungo varieties contain 20% more coffee, the amount of caffeine varies between 77 and 89 mg per capsule. The difference depends mainly on the green coffee (Arabica or Robusta), the degree of roasting, and, to a lesser extent, the origin of the coffee beans.

  • Espresso (40ml) with approximately 55-65 mg of caffeine
  • Lungo (110) –> approx. 77-89 mg caffeine
  • Decaffeinated coffees –> between 2 and 3 mg of caffeine

There is no relationship between intensity and caffeine content. Caffeine is a colorless and tasteless substance that is released on contact with water. The greater the amount of water, the greater the amount of caffeine.

How much caffeine in a cup of coffee vs soda and vs energy drinks

How much caffeine in a cup of coffee vs soda and vs energy drinks


How much caffeine in a cup of coffee vs soda and vs energy drinks

Do you drink a cup of coffee to wake you up in the morning? Do you usually have tea in the evening? Or are you a fan of soft drinks or energy drinks?! If you answered “yes” to any of these questions or know someone who does, then read on. You may be in for a few surprises!

Caffeine is a natural ingredient found in the leaves, seeds, or fruits of plants such as coffee, tea, cocoa, kola nut, guarana, and mate. Some energy drinks contain as much or more caffeine as a cup of coffee. Unfortunately, caffeine is not required by law to be listed on labels unless it has been added separately as an additive or pure substance.

More than half of the caffeine consumed by adults in Canada comes from coffee, about one-third comes from tea, and just under 10% comes from soft and energy drinks. For children under 5 years of age, almost 55% of caffeine consumed comes from soft drinks 

  • 1 8-ounce (237 ml) cup of filter coffee contains about 179 mg of caffeine.
  • 18-ounce (237 ml) cup of brewed coffee contains about 135 mg of caffeine
  •  1 cup of 8 ounces (237 ml) of green tea contains about 43 mg of caffeine
  • 1 can (355 ml) of soft drink contains 36 to 50 mg of caffeine
  • 1 small can (250 ml) of energy drink contains at least 80 mg of caffeine

The caffeine in a Keurig K-cup

Each K-cup contains 2 tablespoons of coffee, i.e. between 75 and 150 mg of caffeine per cup brewed. As mentioned above, this number varies depending on the roasting strength and the bean used.

Unfortunately, I don’t have the details for the brands that Keurig distributes: Van Houtte, Timothy’s, Green Mountain Coffee, Starbucks, and Folgers.

Lavazza Classico, Intenso, and Gran Selezione

I also couldn’t find the information for the capsules of the famous Lavazza coffee roaster. If you have this information, don’t hesitate to write to me!

Here are the numbers I found for their coffees:

  • Espresso or mocha coffee 40-80 mg per cup.
  • American coffee 115-120 mg per cup
  • Instant coffee 65-100 mg per cup.
  • Decaffeinated coffee 2-10 mg per cup.

The coffee and caffeine vs my health and my kids’ health

1 of The Best guide: how much caffeine in a cup of coffee.


1 of The Best guide: how much caffeine in a cup of coffee.

A person’s weight affects the effects of coffee. What is the correct dose of coffee?

A person who does not exceed 50 kilos of bodyweight could have serious problems if they consume 7.5 grams of caffeine. They may even die.

On the other hand, a person over 78 kilos consuming 12 grams of caffeine could also be at risk. Some analyses suggest that consuming more than 90 espresso coffees can cause death.

For kids, we must be even more careful, as their metabolism is faster.

  • In this case, 35 milligrams per kilogram of body weight would be enough for significant poisoning.
  • In any case, this is already an amount of coffee that even an adult does not drink at one time.

The right amount of coffee

Currently, it is estimated that the amount of coffee we should drink in a day should not exceed 4 cups. That would be an ideal consumption limit, although some exceed it by far.

Besides, it should be added that each organism’s tolerance to certain substances is specific to each individual.

Going beyond this moderate amount can cause mild symptoms, such as

  •     Difficulty falling asleep
  •     Dizziness
  •     Stomach pain
  •     Irritability
  •     Rapid pulse

Coffee for children and adults: a real difference!

  • A child of 20 kg, so about 7 years old, should not exceed 60 mg of caffeine.
  •  A child of 30 kg, i.e. about 9 – 10 years old, should not exceed 90 mg.
  • A 40 kg child, about 10 – 12 years old, should have up to 120 mg of caffeine.

In comparison, Esfa considers that adults can safely consume up to 400 mg per day, but not more than 200 mg in two hours. Nevertheless, each metabolism is different and it all depends on medical history.

For a healthy adult, a maximum of three 250 ml (8 oz.) cups of coffee is recommended, representing 400 mg of caffeine per day. Adding caffeine-containing foods (tea, chocolate, cola, energy drinks) to your diet will reduce the maximum recommended number of coffees. Women who are pregnant, breastfeeding, or of childbearing age should limit themselves to 300 mg of caffeine per day.

Is its coffee safe for kids? 

An interesting aspect that I read on the website of the French Children’s Coffee Association Caffeine: A bar of milk chocolate contains 20 mg of caffeine, a bar of dark chocolate contains 80 mg – more than a double espresso! Well, not many children love dark chocolate, and it’s rare to eat one whole bar at a time – but that’s surprising.

So how does caffeine make a child feel? Are there any health risks? Are there any legal regulations?

It should be taken into consideration that a smaller/lighter body can absorb less caffeine. Formula to calculate the personal limit:

  • Weight (in kg) multiplied by 3 indicates the maximum recommended caffeine level per serving (in mg).
  • Weight (in kg) multiplied by 6 indicates the maximum daily recommended level of caffeine (in mg).

Here are a few examples:

  • 50 kg * 3 = 150 mg of caffeine per serving

  • 50 kg * 6 = 300 mg of caffeine per day
  • 120 kg * 3 = 360 mg of caffeine per serving

  • 120 kg * 6 = 720 mg of caffeine per day

However, these are approximate indications because each individual’s tolerance depends on several (sometimes still unknown) factors. Usually, coffee regulars get to know their limits.

The only legal regulation on this subject is that caffeinated beverages exceeding the 150 mg level must display it on the label. Coffee and tea are excepted from this law because it is assumed that consumers know that these drinks contain caffeine/theine. The regulation therefore mainly concerns energy drinks.

But again, there is no specific regulation for children: For the time being, there are no restrictions on the purchase of energy drinks for minors – although some retailers have started to introduce age limits.

As excessive consumption of these (excessively sweetened) drinks can indeed have harmful effects, the Foodwatch organization is calling for a legal age limit for their purchase.

Could the caffeine be dangerous?

1 of The Best guide: how much caffeine in a cup of coffee.


1 of The Best guide: how much caffeine in a cup of coffee.

The answer: Certainly. You will die if you do not follow the rules. Just do not overpay and you will be okay. you and your family.

However, consuming a high dose of caffeine in a short period can cause real trouble or even death. A recent investigation showed a British man died of an overdose in August 2011 after ingesting a large quantity of caffeine-containing tablets. 

According to the Guardian: a pathologist’s report said ” the caffeine level in the blood of tea and coffee drinkers was around 3mg per liter of blood, but in this man’s case the level had risen to 367mg caffeine per liter of blood.”

 Following a report of 22 February, the High Council of Health calls for a reduction in the caffeine content of soft drinks and energy drinks:

The HSC considers that the current limit of 320 mg of caffeine per liter for flavored non-alcoholic drinks (such as soft drinks and energy drinks) is too high and recommends lowering it to 150 mg of caffeine per liter.

Numerous studies are looking at the effects (beneficial or negative) of coffee. In the long term, the results of these tests on the effects of caffeine are “contradictory”.

But again you will be safe if you have applied the rules as I said before do not overpay, and you will be okay.  



If your goal is to enjoy a good cup of coffee while waking up your body, you should go for a brown coffee. It is cooked for a shorter time and will deliver more stimulants than more roasted coffees. Similarly, choose a Robusta, richer in caffeine, over Arabica.

There are two main varieties of coffee, robusta and arabica. If you are looking for a naturally low-caffeinated coffee, then it is recommended that you choose a 100% Arabica coffee. Arabica coffee contains about half the caffeine of Robusta coffee.

The ideal is to count 10 gr of ground coffee for 100 ml of water per cup of coffee. For 4 cups, count 40 gr of coffee and 400 ml of water. Note that 10 grams of coffee corresponds to a well rounded tablespoon. By respecting this rule, you are sure to obtain a regular result with each preparation.

Without a coffee maker, you can boil water using a kettle, a pot, an electric kettle or a microwave oven. To boil water in a kettle or pot, fill the cooking pot with enough water for your coffee and put it on the stove.

The Swiss water process is an indirect process. It consists of immersing the green coffee beans in boiling water to extract all the components … The soaking water is passed through a carbon filter to remove the caffeine.

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This Post Has 2 Comments

  1. Likeone

    Like!! Great article post.Really thank you! Really Cool.

    1. qshoura

      Thank you, feel free to ask me any questions.

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