Strongest Coffee In The World: 5 High Caffeine Coffees That (May) Kill You

By Shabbir
Last update:

We all have been there. Sometimes, we need to drink coffee as much for the caffeine burst as the flavor. There’s nothing quite as rejuvenating as a fresh cup of coffee, as the caffeine jolts your brain into action. But what if regular amounts of caffeine are child’s play for you, and you want the strongest coffee in the world because nothing else will do?

At A Glance: Our Top 4 Picks for the Strongest Coffee In The World

There are a lot of factors that come into play when picking up high caffeine coffees:

To make things easier for you, we've already tested and compared the best products available to narrow the field down to these top choices.

  • USDA Certified organic coffee
  • High caffeine coffee
  • Non GMO, gluten free
cfimvtbl-table__imageBLACK INSOMNIA
  • The world's strongest coffee
  • Roasted to perfection
  • Great taste and super high caffeine
cfimvtbl-table__imageBIOHAZARD COFFEE
  • 928mg of caffeine
  • Whole bean variety
  • Made with Robusta beans
cfimvtbl-table__imageBANNED COFFEE
  • Great taste and aroma
  • Strong and smooth
  • Natural source of vitamins, minerals and anti-oxidants

6 Contenders for the world’s strongest coffee

Some brands have started producing coffee blends that are designed to have insane amounts of caffeine per bean. In fact, it’s sort of become an unofficial caffeine race in some circles where roasters will try to put together the most caffeinated cup of coffee possible.

The coffees below have extremely high amounts of caffeine and should be consumed in extreme moderation and with caution.

1. Devil Mountain Coffee Company Black Label Coffee

With 1555 mg of caffeine per 12 ounces of coffee(nearly 8 times more than a normal cup of coffee), Black Label coffee is quite possibly the strongest coffee in the world.

Please note that one cup of this coffee is equal to 8 cups of regular coffee.


2. Black Insomnia

Black Insomnia coffee has 1105 mg of caffeine per 12 ounces of brewed coffee. This is not quite as much as Black Label but still a lot more than regular coffee. These beans are a mix of 80% robusta and 20% arabica.

3. Maximum Charge by Cannonball Coffee

Maximum Charge coffee is available in the UK from Cannonball Coffee. This coffee contains 1101 mg of caffeine per 12 ounces of coffee. This blend is not available on Amazon, so if you’re looking for a coffee in the 1000+ mg range and you live in the USA, consider Black Insomnia or Devil Mountain.

4. Biohazard Coffee

Biohazard Coffee is right up there with the rest of these coffees at 928 mg of coffee per 12 ounces of brewed coffee. This is an exclusively robusta blend, so you can expect the flavors to be much more earthy and towards the bitter side, but I suppose that’s a small price to pay for extreme caffeine.

5. Banned Coffee

Banned Coffee, still doubly stronger than your normal coffee, seems mild compared to the other coffees we have listed here. Banned Coffee contains 474 mg of caffeine per 12 ounces of brewed coffee. Instead of advertising their coffee as the “strongest”, Banned Coffee qualifies it as the “strongest most delicious”, probably because of the higher ratio of arabica beans in this blend.

6. Death Wish Coffee

Death Wish Coffee is one of the most popular high caffeine coffees around thanks to their powerful brand and fantastic marketing. Formulated from a mix of arabica and robusta beans, one cup of Death Wish Coffee contains about double the caffeine content of a regular cup of coffee.

Death Wish Coffee caffeine content

Consumer Reports has the number at around 472 mg of caffeine in an 8 ounce cup.

With a caffeine content of 472 mg per cup, Death Wish Coffee seems to be the safest option out of all to try. The average adult can get away with drinking one cup since the max recommended dose is 400 mg in one day. However, everyone is sensitive to caffeine in different ways, so you know your body best.

Death Wish Coffee also makes ready-to-drink cold brew, K-Cups, and instant coffee of their blend.

Is Death Wish Coffee really the strongest coffee?

Not exactly. Devil Mountain coffee has nearly double the caffeine of Death Wish Coffee, and there are other companies that make blends with more caffeine. However, it may well be the most popular high caffeine coffee.

What kind of coffee bean has the most caffeine?

which coffee bean has the highest caffeine content

Coffee beans are broadly categorized into two kinds: arabica and robusta.

Arabica beans are higher quality, have fruity flavors, and are harder to grow. Most artisanal coffees and small roasters use arabica beans, and the flavor is evident.

Robusta beans, on the other hand, are lower quality, have strong, bitter flavors, and are much easier to grow. As a result, it’s more practical to bulk produce robusta beans and that’s why most cheap coffees you find in supermarkets(and most instant coffees) are all robusta.

Robusta also has a lot more caffeine than arabica – nearly two times.

Most small roasters will use arabica because it’s generally higher quality, but that’s not to say you can’t find high quality robusta beans if you look around a little.

Using robusta beans for your brews automatically means you’re getting a lot more caffeine, though you’re sacrificing some of the flavors you may enjoy from arabica.

Related: how to make coffee stronger

Highest caffeine content per type of brew

Since many of us are not going to be picky about beans when walking into a Starbucks or local cafe and picking up a cup of coffee, let’s see which coffee preparation has the highest caffeine content first.

how does brewing affect caffeine content





Caffeine per serving


Brewed Decaf

8 oz

3-4 mg

Brewed coffee

8 oz

95 mg

Drip coffee

8 oz

65-120 mg

Espresso shot

2 oz

60-102 mg

Cold brew

8 oz

100 mg

Sources: US FDA, Caffeine Informer

As you can see from the results, you’ll get the highest caffeine burst from an 8 oz(or greater) serving of drip coffee.

Espresso has more caffeine per ounce than drip coffee, but a single shot of espresso is just 2 ounces compared to an 8 oz standard cup of drip coffee.

8 ounces of espresso would have a lot more caffeine than 8 ounces for drip for sure, but you wouldn’t be able to drink 8 ounces of espresso(you could, but you shouldn’t).

Espresso based beverages like lattes, cappuccinos, flat whites, and macchiatos all contain the same amount of caffeine as a single espresso shot.

If you really wanted a burst of caffeine, you could opt for a double shot of espresso – but even then, you’d still be getting pretty much the same amount of caffeine as an 8 oz cup of drip, but you’re cramming the caffeine content into a smaller volume.

Cold brew also has quite a lot of caffeine, and the cold brewing process actually encourages your body to very gradually release the caffeine into your bloodstream instead of all at once, so the longest lasting caffeine buzz would definitely come from cold brew.

Finally, it boils down(pun intended) to volume. How much coffee are you drinking? You may find it more palatable to just have a 16 ounce cup of coffee(a Starbucks Venti is 20 ounces) and take it with you on the go to finish over a period of time – this will result in an intake of nearly 250 mg of caffeine on the higher side.

Does dark roast contain more caffeine than light roast?

For the longest time, I’ve read and maintained that light roasts and dark roasts have varying amounts of caffeine – the caffeine supposedly burns off during the prolonged heating of darker roasts, which is why darker roasts have less caffeine and lighter roasts have more of it.

However, according to the guys at Kicking Horse Coffee, this is in fact untrue and the caffeine content of light and dark roasts, bean to bean is actually the same.

The difference in caffeine arises when you compare weight or volume.

During the heating process, prolonged heating shrinks dark roast beans a little more than light roast beans and causes them to lose their mass, so one kilogram of dark roast has more beans than one kilogram of light roast.

So if you measure out your coffee by weight on a scale like we suggested above, you’ll measure out a few more beans of dark roast than light roast.

The result? Your dark roast coffee will be stronger and contain more caffeine.

On the other hand, if you measure out by volume, you’ll measure out by volume, the light roast beans have more mass, so you’ll end up with more light roast beans than dark roast beans.

The result? Your light roast coffee will be stronger and contain more caffeine.


How much caffeine is too much?

In one serving, the brands above will get you more caffeine than is the recommended safe limit for the average adult, which is 400 mg.

Though caffeine tolerance varies from person to person, and from body weight to body weight, which you can calculate easily by following the link above.

If you’ve built up a tolerance to caffeine or you have a naturally high capacity for caffeine, the coffees above may appeal to you – but even then, you could only have a single cup per day and not more.

Learn more about the latest time to drink coffee.

Caffeine overdose is a real thing and serious complications can arise from it, even death, albeit in extremely rare cases.

What does caffeine do in your body?

Chemically, caffeine is an odorless alkaloid that speeds up your nervous system when you ingest it.

Legally speaking, it’s a drug, though it’s unregulated because it’s very safe in most cases. Unless you have an intolerance for caffeine or you drink way too much of it, it’s safe for you to have.

Caffeine has varied effects on people, much like alcohol. Some people are very alcohol tolerant, whereas others are not so much.

For people that caffeine affects positively, you may experience a good mood and alertness.

For those that it affects negatively, or they’re more sensitive to it, you may feel jittery and uneasy.

As soon as you sip coffee, it will get absorbed into your blood through the lining of your mouth and throat. The remaining caffeine goes into your stomach and gets absorbed within 45 minutes to an hour, and it takes your body about 3 hours to break it down, so that’s how long your buzz will last for.

Can caffeine dehydrate you?

Caffeine is indeed a mild diuretic, which means it has a dehydrating effect, but considering you’re consuming it with 8 ounces of water or more, you’re taking in a lot more water than the miniscule amount of caffeine can remove, so you should be fine.

strongest coffee in the world and high caffeine coffee pin

Last update on 2024-05-05 / Affiliate links / Images from Amazon Product Advertising API

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About Shabbir

Shab is the Chief Caffeine Officer at Coffee Brewster. When he's not weighing out coffee beans for his next brew, you can find him writing about his passion: coffee.