Cold Brew Caffeine Content by Brand: Every Canned Cold Brew Compared (2026)

How much caffeine is in cold brew? A canned, ready-to-drink black cold brew sold in the US contains between 125 mg and 320 mg of caffeine per container, depending on the brand and the can size. Per fluid ounce the spread is roughly 10 mg to 37 mg. Bare Brew sits at the top of that range for total caffeine, at 320 mg in a 12 oz can — the most caffeine per container of any black, unsweetened RTD cold brew we could verify a published number for, and all of it from the coffee itself.

Below is every brand we could verify, with the source for each figure and an honest note wherever the number is uncertain. Checked 25 August 2026.

Caffeine by brand: black, unsweetened canned cold brew

Sorted by total caffeine per container. Every product in this table is black coffee with no added sweetener and no dairy.

Sweetened and dairy-based RTD coffee, for comparison

These are often shelved next to black cold brew and often described as cold brew. They are not the same product — several are espresso-and-milk drinks, and two of them add caffeine rather than extracting it.

Energy drinks and regular coffee, for scale

Why the numbers vary so much

Cold brew uses a higher coffee-to-water ratio than drip — typically 1:5 to 1:8, against drip's 1:15 to 1:18 — and steeps for 12 to 18 hours instead of four minutes. More grounds and more contact time means more caffeine extracted. That is the whole mechanism.

It also means caffeine in coffee is genuinely variable. The FDA puts regular brewed coffee at 113–247 mg per 12 fl oz — a better than twofold spread driven by bean, roast, grind and ratio. Any single number for “a cup of coffee” is a midpoint, not a guarantee. A canned product is the opposite: the dose is fixed and printed on the label, which is the main practical argument for buying it in a can.

Natural caffeine vs added caffeine

This is the distinction most caffeine comparisons skip. Caffeine in cold brew occurs naturally in the coffee bean. Energy drinks — and, as the tables above show, some coffee products — use caffeine anhydrous, manufactured separately and added in.

Caffeine from coffee arrives alongside the other compounds in the bean: chlorogenic acids, antioxidants, and the rest of the matrix that came with it. Added caffeine arrives on its own. Bare Brew's 320 mg comes entirely from the coffee — Honduran Arabica and filtered water, two ingredients, nothing added.

Is 320 mg of caffeine safe?

The FDA considers up to 400 mg per day generally safe for healthy adults. One 12 oz Bare Brew at 320 mg sits inside that. Individual tolerance varies, and anyone pregnant, nursing, or sensitive to caffeine should talk to a clinician. We recommend one can a day.

For scale: a 20 oz Starbucks drip coffee runs around 415 mg, more than a can of Bare Brew, and is ordered by the million every morning.

How caffeine actually works

Caffeine blocks adenosine receptors, which is why it reduces the feeling of tiredness rather than adding energy. It also increases dopamine signalling, which is the focus and mood effect. Blood levels peak 30 to 60 minutes after drinking and effects last four to six hours depending on your metabolism.

The spike-and-crash people blame on caffeine is usually sugar. Strip the sugar and the additives out and what is left is the caffeine curve on its own.

How we sourced this

Every figure above comes from the brand's own product page or nutrition panel where one publishes a caffeine number, and from a nutrition database or major retailer listing where one does not. Where sources disagreed we published the range rather than picking the flattering end. Where a brand publishes nothing, the cell says so.

Three entries deserve a flag: Chameleon's 230 mg rests on a single third-party source and the brand publishes no figure of its own. Wandering Bear's range is inferred, as described above. Califia's number carries the manufacturer's own “approximately.” We have also left out Peet's and Dunkin' RTD entirely: neither publishes caffeine content for its packaged products, and the widely-quoted Dunkin' numbers are for in-store cups, not cans.

Nutrition panels get reformulated without notice. This table was verified on 25 August 2026 and is re-checked on a recurring basis. If you find a figure that has changed, tell us at miles@drinkbarebrew.com and we will correct it.

The short version

Canned black cold brew runs 125–320 mg per container. Bare Brew is at the top of that range at 320 mg in 12 oz, with zero sugar, zero sweeteners and two ingredients. Death Wish is more concentrated per ounce but adds caffeine to get there. Everything else on the shelf either has less caffeine, or has sugar and milk in it, or both.