Which coffee has the most caffeine?

Which coffee has the most caffeine per cup?

A big cup of plain drip from a chain. Starbucks US prints 390 mg to 490 mg for a Venti brewed coffee, 20 fl oz, and nothing else on this page with a maker’s figure for a stated serving reaches the bottom of that range. Death Wish, the one with the skull on the bag, comes in below it by its own numbers. A cup that size is also past the single dose a review links to extra urine in people who have been off caffeine, as does coffee dehydrate you explains.

Canned and bottled coffee does not top the list. The Starbucks can with the most caffeine in PepsiCo’s table is Tripleshot Energy, and Monster’s Killer Brew ties the instant packet. Starbucks Iced Coffee, Nitro Cold Brew, the bottled cold brews and La Colombe’s cans are compared in cold brew vs iced coffee. More drinks, cup for cup, are on the drinks page.

Which coffee is the strongest per ounce?

Espresso, and nothing on this page comes close. Big and strong are easy to mix up: a Venti wins on the cup because it is a lot of coffee, not because each sip is fierce. Divide each figure by its serving and the order changes.

Our arithmetic from the makers’ figures: a Starbucks US Venti brewed coffee (390 to 490 mg in 20 fl oz) is 19.5 to 24.5 mg per fl oz; a Starbucks solo espresso (75 mg in 0.75 fl oz) is 100 mg per fl oz; Death Wish Dark Roast (180 mg per 6 oz) is 30 mg per fl oz. The Venti holds the most caffeine of the three and the espresso is by far the strongest per fl oz. 4147523

By our arithmetic Death Wish Dark Roast, at 30 mg per fl oz, is stronger per sip than a Starbucks Venti drip at 19.5 mg per fl oz to 24.5 mg per fl oz. That is the honest version of Death Wish’s claim: a stronger brew, in a smaller cup. A single Starbucks shot is 75 mg (Solo, 0.75 fl oz), which is why a double espresso lands like a slap and still holds less than a Tall drip. Shots, chain by chain, are in how much caffeine is in a shot of espresso.

What is the strongest coffee in the world?

No one we could find can show you with a serving and a named lab. A shop’s blog that ranks for the question gives these figures for a 350 ml cup, and cites a source for none of them.

A coffee shop’s blog on the first page of US results for “highest caffeine coffee”, dated April 15, 2025, gives these figures for a 350 ml cup and cites no source for any of them: Devil Mountain Black Label 1,555 mg (“believed to contain”), Black Insomnia 1,105 mg (“the manufacturer gives”), Biohazard 928 mg (“manufacturer’s”) and Death Wish about 730 mg. They are what the page says, not measurements this site holds. 530

So we went to the makers. On November 12, 2026, this is what each one’s own site showed.

Read on November 12, 2026: Devil Mountain’s Black Label page calls it a world’s strongest coffee and prints no caffeine figure and no lab; a sister page says “Lab Tested” without naming a lab or giving a result. Biohazard’s store showed “This store is unavailable”. Black Insomnia’s own site (black-insomnia.com) states 1,105 mg “per cup”, which it says a Swiss-based lab confirmed by liquid chromatography, but gives no cup size and does not name the lab. Devil Mountain and Biohazard gave no figure that day. 531532533

The world’s strongest coffee is loud on the bag and very quiet about which lab

Black Insomnia does stand behind its number, and says it was measured by liquid chromatography. What it does not say is how big the cup is, so its figure cannot be compared with anything else here.

Black Insomnia’s site states 1,105 mg of caffeine “per cup”, “confirmed via liquid chromatography by a Swiss-based lab”. It gives no cup volume, no coffee dose and no lab name, so the figure cannot be set against a serving. 533

None of that makes any of the figures false. Devil Mountain’s and Biohazard’s are unsourced, and Black Insomnia’s has no serving. Some of these coffees may well be very strong. Until a maker prints a figure for a stated serving and names the lab, this page leaves it out of every ranking, and so should you.

Death Wish is the one maker in the group that prints a number for a stated serving, and it is a lot smaller than the one the blog gives for it.

Death Wish states 180 mg per 6 oz of its Dark Roast, brewed by the package. By our arithmetic that is 30 mg per fl oz, about 360 mg in 12 fl oz and about 355 mg in a 350 ml cup: about half the 730 mg in a 350 ml cup that a page-one shop blog gives with no source. 523530

How much caffeine is in Death Wish coffee?

Death Wish states 180 mg per 6 oz for its Dark Roast, brewed by the package instructions. That is its own figure, from its caffeine page, read on November 12, 2026. The strongest bag in the range is Power Surge at 210 mg.

Death Wish says Power Surge has about a fifth more caffeine than Dark Roast. Its own table says a little less than that.

Death Wish’s own table, per 6 oz brewed by the package, puts its Light Roast at 155 mg and its Dark Roast at 180 mg: by our arithmetic the dark roast is 25 mg higher. Death Wish says Power Surge has “approximately 20% more caffeine” than Dark Roast; its own figures, 210 mg against 180 mg, work out to about 16.7% more. 523

The cold brew is where the page trips over itself. Read the serving size twice before you plan a day around it.

Death Wish’s Espresso Roast Cold Brew page states approximately 250 mg of caffeine “based on a standard 6oz serving” and, lower on the same page, “per 12oz serving”. The two cannot both be right for the same 250 mg, and the page does not say which is meant. The Dark Roast unsweetened cold brew page states the 6 oz serving only. The caffeine page lists Cold Brew: Dark Roast at 250 mg without a serving. 524523

We are not picking one of the two servings for them. If it is the larger one, the bottle is weaker per ounce than every hot coffee in that table with a per fl oz figure; if it is the smaller one, it is stronger per ounce than any of them. The label on the bottle in your hand is the one to trust.

Does light roast or dark roast have more caffeine?

Not the way the myth says. Starbucks prints one range for all three of its brewed roasts, at every size, so by its figures roast makes no difference. Death Wish prints its Light Roast at 155 mg and its Dark Roast at 180 mg: the dark one is 25 mg higher, the opposite of the myth.

I switched to Death Wish Light Roast for the extra caffeine and got less caffeine and a lecture about blueberry notes

Labs say much the same. One study measured arabica beans green and at three roasts and found the caffeine in the extract moved only a little.

That is a lab extract, not your cup. A study that brewed real cups at five roasts found a narrow spread too, and the order depended on how it was brewed.

One 2024 study brewed two Ethiopian coffees at five roast levels and three brew times (1, 2 and 10 minutes), 10 g of coffee to 150 g of water in an AeroPress, and found 134 to 165 mg of caffeine per 8 oz cup for the natural coffee and 145 to 165 mg for the washed one. Each range runs across roast and brew time together, not roast alone. In its ten-minute brews caffeine peaked at light to medium roasts and fell for darker ones; compared at the same extraction yield, dark roasts were generally higher. 56

So pick the roast for the taste. If you want more caffeine, use more coffee or a bigger cup. The cup of coffee article has the rest of what moves it.

Does robusta have more caffeine than arabica?

Yes, as a rule. The species of the bean is a bigger lever than the roast.

Green arabica beans contain on average 0.9 to 1.5% caffeine by dry weight and green robusta beans 1.2 to 2.4%, according to a peer-reviewed review that compiled them from other papers. Those two ranges overlap. The same review elsewhere gives 0.9 to 1.2% and 1.6 to 2.4%, a pair that does not overlap. 55

In the cup, a review of brewing studies found robusta brews holding about 1.4–1.8 times the caffeine of arabica brews, with a few studies finding less of a gap. A separate study of wild plants agrees on the direction.

A 2001 study analyzed 38 wild arabica and 38 wild robusta (Coffea canephora) genotypes by HPLC and reports that the robusta held more caffeine. Its abstract gives no percentages. 528

Most coffees sit in a narrow band. A study of coffees from around the world put most at 10–12 mg/g and the highest at 19.9 mg/g.

Death Wish puts its own numbers on the beans. Treat them as the maker’s claim: the page gives no source for them, and none of the papers on this page states caffeine per bean.

Death Wish’s caffeine page says a robusta bean holds 2.5 mg of caffeine and an arabica bean 1.5 mg, and that its Dark Roast averages 180 mg against “100mg or less” for “Generic Coffee”. It gives no source or method for any of the three figures. 523

Is a Venti coffee too much caffeine?

EFSA concludes that caffeine intakes up to 400 mg a day from all sources, spread through the day, do not raise safety concerns for healthy adults, except pregnant women. FDA cites 400 mg a day for most adults as an amount not generally associated with negative effects, and notes wide variation in how sensitive people are to caffeine and how fast they eliminate it. 225

At the top of its range, one Venti drip (490 mg) is past that line on its own. At the bottom of the range (390 mg) it leaves room for very little else. The line is for a whole day, not a cliff, and people differ a lot in how fast they clear caffeine; the half-life article has the spread, and the method page shows how the curve is drawn.

I went looking for the strongest coffee on earth and found it at the Starbucks next to my dentist