How Much Caffeine In a Cup of Coffee?

Let's Take a Look And See Just How Much Caffeine Is In a Cup Of Coffee?

If you’re anything like me, you love to get your day started with a strong cup of coffee. That caffeine buzz is the perfect kick to get your day started, but too much and you might just be staring at the walls all night. 

So it’s important to have a good idea of just how much caffeine is in a cup of coffee so that you can keep tabs on your daily intake.

So, how much caffeine is in a cup of coffee? An average cup of brewed coffee contains 95 milligrams of caffeine. The amount of caffeine in coffee can vary depending on a number of factors, including the type of beans used, the brewing method, and the size of the cup.

If you want to find out just how much caffeine is in your favorite coffee drink and brewing method read on! we’ve got you covered…

Table of Contents

What Factors Affect Caffeine Content?

Several factors can affect the amount of caffeine in your coffee including

  • Type of beans
  • Type of roast
  • Grind size
  • Serving size 
  • Brewing method

Here’s all you need to know about all of these factors:

1. Coffee Bean Variety

One of the more surprising facts about coffee beans is that different varieties contain different amounts of caffeine. 

So, if the amount of caffeine in your coffee is of concern to you, it may make sense to seek out beans of a certain variety, depending on whether you want more or less caffeine. 

Check out this table to get an idea of the caffeine content in the most popular coffee bean varieties:

Coffee BeanCaffeine (mg)
Robusta22 mg
Arabica12 mg
Liberica12 mg
Excelsa10 mg

Arabica

You’ll find that Arabica beans are most commonly used in coffee. They account for 60-70% of the world’s coffee production.

These beans are grown in Central and South America and parts of Africa. They’re known for their sweeter, more nuanced flavors with lower acidity. The amount of caffeine in Arabica beans can range from 1.0% to 1.5%. 

Robusta

Robusta beans are the second most popular type of coffee bean. They’re often used in instant coffees and espresso blends because of their higher caffeine content and bitter flavor.

From the name, you can probably guess that Robusta beans are more resilient than Arabica beans and can grow in a broader range of climates. The caffeine content in Robusta beans is higher than Arabica, ranging from 1.7% to 4.0%.

Liberica

While Liberica beans are not as popular as Arabica or Robusta, they’re still grown in many countries worldwide, including the Philippines, Malaysia, and Liberia (where they get their name).

They offer slightly less caffeine then Arabica beans at around 1.2% to 1.3%. They’re often used in blends to help round out the flavor.

Excelsa

Excelsa beans are grown in Vietnam, Thailand, and parts of Africa. They have a floral aroma and sweet, tart flavor. You’ll find that Excelsa beans are often used in blends because of their unique flavor profile.

Excelsa accounts for only 7% of coffee production. The coffee bean you use will have a big impact on the caffeine content of your coffee. 

Excelsa beans have the least amount of caffeine, while Liberica beans have around the same amount of caffeine as Arabica beans. And Robusta beans have the most caffeine of all the coffee beans.

2. Roast Level

It may seem like a small factor in the grand scheme of things, but the roast level that you choose has a massive impact on the overall caffeine content of your coffee. 

The longer the coffee beans are roasted, the more caffeine is burned away during the process, so a darker roast will contain significantly less caffeine than a lighter roast.

Plus, while darker roasts have a more intense flavor, they’re not actually as strong as lighter roasts. 

3. Grind Size

The grind of the coffee also affects the caffeine content. A finer grind will result in a higher caffeine content, while a coarser grind will result in a lower caffeine content. 

This is why some coffees, like espresso, will contain much more caffeine than coffee made from a drip machine. 

However, you can still achieve a strong cup of coffee if you increase factors like brewing time— for example, the cold brew method uses an extra coarse grind size, but the extended brewing time helps create a strong cup of coffee with a decent caffeine level. 

4. Serving Size

This one may seem a tad obvious, but it’s true—the amount of coffee that you consume in a serving will usually have an impact on the caffeine content. 

For example, a latte with a single shot of espresso will contain less caffeine than one with a double shot, even if it’s the same size in terms of ounces. So be sure to consider how much coffee you’re actually consuming at any one time. 

5. Brewing Method

No two coffee brewing methods brew coffee in the same way, so each one will produce a different result in terms of caffeine content. 

A longer brewing time will result in more caffeine, while a shorter brewing time will result in less caffeine. 

For a cup of coffee with a higher caffeine content, you’ll want to choose a brewing method that allows your beans to steep for longer and works with a finer grind. 

Amount Of Caffeine In Coffee Drinks

There are different types of coffee, from latte to frappuccino, and they all have a different amount of caffeine. 

Let’s take a look at some popular types of coffee and their caffeine content:

Coffee Type Caffeine (mg)Fluid Ounces (oz)
Flat White175 mg12 fluid oz
Frappuccino115 mg12 fluid oz
Americano108 mg12 fluid oz
Cappuccino105 mg12 fluid oz
Mocha97 mg12 fluid oz
Drip Coffee95 mg8 fluid oz
Latte75 mg12 fluid oz
Espresso63 mg1 fluid oz
Instant Coffee62 mg8 fluid oz
Decaf Coffee2.4 mg8 fluid oz

Want to become an expert on coffee beans, roasts, drinks and brewing? head over to our new easy to follow guide!

Here’s a graphic that shows the data from the table above in a visual way…

1. Espresso

Espresso is the way to go for those who can’t start their day without a cup of coffee. It has the most caffeine of all the brewing methods. 

This is because espresso is made by forcing hot water through finely-ground coffee beans. The pressure and heat extract more of the coffee’s oils and caffeine. A single shot of espresso has about 64mg of caffeine.

2. Drip Coffee

Drip coffee has less caffeine than espresso. It is made by dripping hot water over coarsely ground coffee beans. The water extracts some of the coffee’s oils and caffeine, but not as much as espresso. A cup of drip coffee has about 95mg of caffeine.

3. Instant Coffee

For those looking for the least amount of caffeine, instant coffee is the way to go. Instant coffee is made by brewing coffee and then freeze-drying it. This removes most of the coffee’s oils and caffeine. 

This means that there is very little left in the final product. The caffeine content of instant coffee varies, but it is usually around 27mg per cup.

4. Decaf Coffee

Decaf coffee is a great option if you’re looking for a coffee with little to no caffeine. It’s made by removing the caffeine from regular coffee beans. The decaffeination process removes about 97% of the caffeine from the beans. 

This leaves behind a coffee with only 2.4mg of caffeine per cup. Even though it’s called decaf, there’s still a small amount of caffeine. 

5. Latte

In a latte, there is about 75mg of caffeine. A latte is made by mixing espresso and steamed milk. The amount of caffeine in a latte will vary depending on how much espresso is used. 

A single shot of espresso has about 64mg of caffeine, so a double-shot latte would have about 128mg of caffeine.

6. Mocha

If you’re looking for a coffee with a little bit of sweetness, then a mocha is a good choice. A mocha is made by mixing espresso, chocolate, and milk. The chocolate adds sweetness, and the milk mellows out the coffee’s flavor. A mocha has about 97mg of caffeine.

7. Americano

The Americano is a simple coffee made by mixing espresso and hot water. The ratio of espresso to water can be customized to taste. 

This coffee has about 108mg of caffeine. There is more caffeine in an Americano than drip coffee because the espresso is concentrated, and there is less water to dilute it.

8. Frappuccino

You might think that a frappuccino would have a lot of caffeine, but most frappuccinos only have about 75mg of caffeine. This is because frappuccinos are made with a lot of milk and ice. 

The milk dilutes the espresso, and the ice takes up space that could be occupied by caffeine-rich coffee. The coffee flavor comes from coffee syrup or espresso. So, even though a Frappuccino has coffee, there isn’t enough to make it a high caffeine drink. 

9. Cappuccino

With about 80mg of caffeine, a cappuccino has a little bit more caffeine than a latte. This is because a cappuccino has more espresso than a latte. 

A cappuccino is made by mixing espresso, steamed milk, and foam. The foam adds body, and the milk mellows out the coffee’s flavor. Giving the cappuccino a slightly different flavor than a latte. 

10. Flat White

More popular in Australia and New Zealand, the flat white coffee is made with espresso and steamed milk. The key difference between a flat white and a latte is that a flat white has less foam. 

This gives the coffee a more intense flavor. The flavor is also more pronounced because the espresso is concentrated. A flat white has about 80mg of caffeine.

Caffeine Content By Brewing Type

Even if you use the same type of coffee beans, the same roast level, the same grind size, and make the same amount of coffee, the brewing method that you choose will have an impact on the caffeine content in your cup. 

Since different brewing styles will require different brew times, coffee-to-water ratios, grind sizes, and roast levels, each brew method will produce coffee with different caffeine content. 

To get a better idea of which brewing methods produce more caffeine, check out this table, or read on to learn more about each brew type. 

Brewing MethodCaffeine ContentServing Size (oz)
Moka Pot219 mg3 oz
Percolator200 mg8 oz
Pour-Over80 mg - 185 mg8 oz
Drip70 mg - 140 mg8 oz
Single-Serve Pods75 mg - 120 mg8 oz
French Press100 mg8 oz
Cold-Brew100 mg8 oz
Eva Solo100 mg8 oz
Vacuum /Siphon95 mg8 oz
Chemex80 mg8 oz
AeroPress50 mg - 70 mg8 oz
Espresso64 mg1 oz
Turkish50 mg2 oz

Here you can check out our ultimate coffee brewing method guide that covers everything you need to know so you can finally choose the brew method that is right for you and your lifestyle!

We have also included an info-graphic that shares the data from the table above in a more visual way.

You can check out our info-graphic below…

French Press

If you’re looking to have your coffee brewed extra strong, consider using the French press method. 

Not only are French press coffee makers affordable and widely available, they’re easy to use and produce some strong coffee (about 100mg of caffeine in an 8 ounce cup). 

French press coffee makers work by allowing the coffee grounds to steep in the hot water for about 4 minutes, before the coffee is forced through a filter. 

Percolator

While a little more old-fashioned than some of the methods on this list, the humble percolator is an excellent and efficient method for brewing super strong coffee. 

At 200mg of caffeine per 8 ounces of coffee, it’s not as strong as espresso, but it’s close! Percolators force boiling water up through coffee grounds to produce a nice strong cup of coffee. 

Single Serve Pods

There’s really nothing more convenient in terms of coffee brewing than a single-serve capsule machine like a Nespresso or Keurig. 

But the downside to these machines is that you don’t have much control over the strength or brew time of your coffee, so you’re stuck with what you get with the pods or capsules that you choose. 

The coffee capsules for these machines may produce coffee with about 75-120mg of caffeine per 8 ounces of coffee, but that can vary wildly depending on brand and roast level.

AeroPress

While the AeroPress doesn’t produce the strongest cup of coffee on this list, it’s definitely worth looking into if you want a more portable travel-friendly coffee maker. 

The AeroPress acts almost like a giant syringe that uses pressure to force the hot water and coffee grounds through the filter and into your cup. 

The result is a strong and bold cup of coffee with about 50 to 70 milligrams of coffee. It’s a great option if you’re looking for a morning buzz, but not enough to set off the jitters.

Drip Coffee

When most people think of coffee, they’re thinking of coffee made with a drip maker. It’s the most popular brewing method by far, and it’s a common starting off point for most coffee lovers who are new to the hobby. 

In terms of caffeine, an 8-ounce cup of drip coffee could contain anywhere from 70 to 140 milligrams of caffeine, and the average amount is around 95. 

Drip coffee is brewed by running a stream of hot water through a basket of coffee grounds. The extracted coffee then falls through a filter and “drips” into your cup. 

Pour-Over

Pour over coffee tends to have slightly more caffeine than drip coffee, and is usually about 80-185 mg in an 8-ounce cup. 

To make pour-over coffee, you boil water in a gooseneck kettle, before pouring it over a cone-shaped filter filled with coffee grounds. 

The coffee will then fall into the carafe below. While it functions similarly to drip coffee, pour-over tends to take longer, and that leads to a more flavorful cup. 

Cold-Brew

Cold brew is made by adding extra coarse coffee grounds to cold or lukewarm water, and then allowing it to steep for an extended period (usually overnight or a full 24 hours). 

Due to the long brewing time, an 8-ounce cup of cold brew will have about 100 milligrams of caffeine. While it’s not the strongest option on the list, cold brew aficionados love it for its smooth taste and lack of acidity. 

Moka Pot

While a moka pot doesn’t produce “authentic” espresso per se, it does create a thick, dark, and strong substitute! 

A moka pot works similarly to a percolator; boiling water begins to rise up from the bottom chamber of the coffee maker and is forced through the basket containing the grounds. 

From there, the extracted coffee is forced up and out into the main chamber using the pressure from the boiling water. 

As for caffeine, moke pots produce about 219 mg of caffeine in a 3-ounce pour, which is more than enough for most. It makes an excellent at-home base for espresso drinks like lattes and cappuccinos!

Vacuum/Siphon

Siphon coffee brewers may look like a science experiment, but they’re a favorite of hardcore coffee lovers everywhere. 

They’re made up of a higher and lower chamber, with coffee grounds in the upper chamber and water in the lower chamber. As the water is heated, it rises into the upper chamber, combines with the coffee grounds, and drips back down. 

Coffee enthusiasts love siphon brewers for their clean and smooth taste, but in terms of caffeine, there’s very little difference between siphon coffee and coffee you would get from a drip maker. 

There’s around 95 mg of caffeine in an 8-ounce cup of coffee, but depending on your roast level or grind size, it could be higher or lower. 

Chemex

While a Chemex is a type of pour over coffee maker, it’s in a class of its own. Chemex coffee makers are carafes that work with a special cone filter to create rich and flavorful coffee. 

The extract-thick paper filters absorb more of the coffee’s natural oils, so it produces a smoother and less bitter cup. 

The Chemex is also an excellent option if you love to have less caffeine in your coffee; at only 80mg per 8-ounce cup, it has slightly less caffeine than a standard cup of drip coffee. 

Eva Solo

The Eva Solo coffee maker brews coffee in a method very similar to “cowboy” coffee or a French press—simply add your grounds to the carafe, pour in your boiling water, stir, place the lid on the carafe, and let it steep for a few minutes. 

Then, you can pour your coffee out and enjoy! It’s a simple and convenient method that’s perfect for travel or work. 

As for the caffeine content, it’s very similar to French press, with about 100 milligrams of caffeine per cup. While not the strongest coffee out there, it’s certainly enough caffeine for most.

Espresso Machines

Espresso is generally the strongest coffee that most people have on a daily basis; at 64mg of caffeine in just a single 1-ounce shot, it’s much stronger than other brewing methods on this list. 

Espresso is made with an espresso machine that forces pressurized hot water through the finely-ground beans, producing a small but strong shot of thick, flavorful coffee. 

You can easily customize the caffeine content of your drink by adding an extra shot or two of espresso; just be sure not to overdo it! 

Turkish

A centuries-old tradition, Turkish coffee is a staple that every coffee enthusiast should try at least once! 

Turkish coffee is made in a brass or copper pot called a cezve, where extremely fine grounds are combined with water, and sometimes sugar. The mixture is brought almost to a boil, before being poured out, grounds and all, into small cups. 

Turkish coffee is thick, bold, and strong, and it’s got nearly as caffeine as espresso (there’s a reason it’s served in 1-2 ounce servings). A 1-ounce serving has about 25 milligrams of caffeine, or about twice the caffeine as standard drip coffee.

What Coffee Brands Contain the Most Caffeine?

These coffee brands contain high amounts of caffeine and should be consumed in moderation. Drinking too much coffee can lead to adverse effects such as anxiety, restlessness, and insomnia. 

Avoiding these brands or limiting your intake is best if you are sensitive to caffeine. 

Here are the top 10 coffee brands that contain the most caffeine:

Brand NameCaffeine (per 12 oz)
Black Label by Devil Mountain1555 mg
Very Strong Coffee1350 mg
Devils Brew Extreme Caffeine Coffee1350 mg
High Voltage Coffee1150 mg
Black Insomnia Coffee1105 mg
Biohazard Coffee982 mg
Death Wish Coffee728 mg
Coffee SIN Performance Coffee 696 mg
Fire Department Coffee500 mg
Banned Coffee474 mg

Can I Test The Caffeine Content of My Coffee?

If you’re curious about the caffeine content of your coffee, there are a few ways to test it. You can use a home coffee testing kit to approximate the caffeine content. 

You can purchase these kits online or at your local coffee shop. What you need:

  • Coffee testing Strip
  • Freshly brewed coffee
  • A measuring cup
  • A timer

Instructions:

  1. Brew a pot of coffee using your preferred method.
  2. Let the coffee cool for about 15 minutes.
  3. Pour a cup of coffee into the testing cup.
  4. Start the timer and begin the test according to the kit’s instructions.
  5. Compare the results to the kit’s chart to determine the caffeine content of your coffee.

Although a testing strip cannot determine the amount of caffeine in coffee mixtures, such as lattes that contain milk and espresso, you need to use black coffee for an accurate reading.

You can also send your coffee to a laboratory to be tested. This is the most accurate way to test the caffeine content of your coffee. However, it is also the most expensive.

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