Strongest coffee you can buy: highest-caffeine brands, mg per cup

Devil Mountain's Black Label has the highest caffeine figure we found for a coffee sold in the US: 1,555 mg per 12 fl oz brewed, as listed by Caffeine Informer. Black Insomnia (1,105 mg) and Death Wish (728 mg) follow. A tall Starbucks Dark Roast has 195 mg, per Consumer Reports.

1,555 mgBlack Label, per 12 oz
400 mgFDA daily figure for most adults
195 mga tall Starbucks Dark Roast
6coffees listed

One 12 oz cup of Black Label is almost four times the 400 mg a day the FDA cites as not generally linked to negative effects for most adults. These brands sell on that number, so brew them weaker than you would normal coffee.

Price tables: SpicyExtreme foods

At a glance

ProductCaffeine (mg / 12 oz)Lowest eBayAmazon
Devil Mountain Black Label Coffee1,555$297Check price
Black Insomnia Coffee1,105$14.49Check price
Death Wish Coffee728$15.26Check price
Gunpowder Coffee644none listedCheck price
Fire Department Coffee500$10.49Check price
Banned Coffee474$21.47Check price

How much is too much?

The FDA cites 400 mg a day as an amount not generally linked to negative effects for most adults. One 12 oz cup brewed at the makers' strength compares like this:

  1. Devil Mountain Black Label: 1,555 mg, nearly 4 times the 400 mg figure.
  2. Black Insomnia: 1,105 mg, about 2.8 times.
  3. Death Wish: 728 mg, about 1.8 times.
  4. Fire Department Coffee: 500 mg, 1.25 times.

Do it safely

  • Brew these weaker or drink a smaller cup than usual.
  • Count other caffeine too: energy drinks, tea, soda and pre-workout.

The coffees, strongest first

Devil Mountain Black Label Coffee

Devil Mountain Black Label Coffee

1,555 mg / 12 oz source
eBay $297Amazon

The highest figure on Caffeine Informer's list of strongest coffee brands: 1,555 mg in a 12 fl oz brewed cup, about eight times a tall Starbucks Dark Roast.

Black Insomnia Coffee

Black Insomnia Coffee

1,105 mg / 12 oz source
eBay $14.49Amazon

Listed at 1,105 mg per 12 fl oz brewed, second on Caffeine Informer's list of strongest coffee brands.

Death Wish Coffee

Death Wish Coffee

728 mg / 12 oz source
eBay $15.26Amazon

The brand that bills itself as the "world's strongest". Caffeine Informer lists 728 mg per 12 oz; Consumer Reports measured 59 mg per fluid ounce, or 708 mg in 12 oz.

Gunpowder Coffee

644 mg / 12 oz source
Amazon

Listed at 644 mg per 12 fl oz brewed, roughly three tall Starbucks Dark Roasts in one cup.

Fire Department Coffee

Fire Department Coffee

500 mg / 12 oz source
eBay $10.49Amazon

Listed at 500 mg per 12 fl oz brewed, about two and a half tall Starbucks Dark Roasts.

Banned Coffee

Banned Coffee

474 mg / 12 oz source
eBay $21.47Amazon

Listed at 474 mg per 12 fl oz brewed, about two and a half times a tall Starbucks Dark Roast.

We earn a commission on purchases through these links. eBay prices (item + shipping) read from our latest check; Amazon links open a search, so check the price there. Listed in no particular order. Each figure is the maker’s or the named source’s claim, as of 2026-11-09.

Good to know

Watch strong-coffee tests

Testing one of the most caffeinated coffeesTesting one of the most caffeinated coffeesMorgan Eckroth · YouTube · 2021The 5 strongest caffeinated coffees, reviewedThe 5 strongest caffeinated coffees, reviewedHot Shots Coffee · YouTube · 2020Devil Mountain Black Label reviewDevil Mountain Black Label reviewCoffeeology · YouTube · 2022

Videos open on YouTube. We don't make or endorse them; they show what the challenge looks like.

More extremes

Hottest gummy bear Hottest hot sauce Fire Noodle Challenge Sourest candy Biggest gummy candy Hottest Takis Carolina Reaper Hottest candy Disturbing candy Black Death sour challenge Freeze-dried candy Strongest energy drinks Ghost pepper Sourest gummies Hottest Tabasco sauce

Sources