A medium (14 oz) Dunkin' hot coffee has about 210mg of caffeine. Dunkin' itself says its hot coffee runs from roughly 180mg for a small to 330mg for an extra large, and its iced coffee runs from 198mg for a small to 398mg for a large. That large iced coffee is the strongest standard drink on the menu, and it clears what most people drink in an entire day.
Per-size numbers below come from Caffeine Informer's Dunkin' guide (updated April 2026), which lines up with Dunkin's published ranges. Dunkin' calls these approximate values, since brew strength varies a little by batch and location.
The iced coffee outranks the cold brew
Most people assume cold brew is the strongest thing in the cooler. At Dunkin' it is not. A large iced coffee carries about 396mg, while a large cold brew sits at 347mg. Same story down the sizes: small iced coffee 198mg versus small cold brew 174mg. Dunkin's iced coffee is double brewed hot coffee poured over ice, so it keeps drip-coffee strength in a bigger cup, while the cold brew is steeped to a smoother, slightly lighter profile.
The other thing that surprises people is the espresso side of the menu. A Dunkin' latte or cappuccino tops out at 252mg in a large, just under a large hot coffee at 270mg. If you order espresso drinks because you want more caffeine, the drip pot is quietly beating you.
Dunkin' caffeine chart by drink and size
All figures in milligrams of caffeine. Hot drinks come in 10, 14, 20, and 24 oz sizes; iced and frozen drinks come in 16, 24, and 32 oz sizes.
| Drink | Small | Medium | Large | Extra large |
|---|---|---|---|---|
| Hot coffee | 180 | 210 | 270 | 330 |
| Iced coffee | 198 | 297 | 396 | n/a |
| Frozen coffee | 196 | 295 | 393 | n/a |
| Cold brew | 174 | 260 | 347 | n/a |
| Americano | 237 | 284 | 371 | n/a |
| Macchiato | 237 | 284 | 371 | n/a |
| Latte / cappuccino | 118 | 166 | 252 | n/a |
| Espresso (single shot) | 118 | |||
| Hot tea | 90 | 90 | 180 | n/a |
| Vanilla chai | 54 | 80 | 107 | n/a |
| Hot chocolate | 9 | 13 | 18 | 19 |
| Decaf coffee | 7 | 10 | 15 | 18 |
A few reads on that chart. Dunkin's single espresso shot is listed at 118mg, which is unusually high for a single shot. The americano and macchiato both use two shots, which is why they jump to 237mg in a small. And decaf is not zero: a large decaf still carries about 15mg, which matters if you are cutting caffeine completely.
You can also order around these numbers. Adding an espresso shot to any drink tacks on about 118mg, which turns a medium latte (166mg) into roughly the same dose as a large hot coffee. Going the other way, swapping a large iced coffee for a large cold brew quietly drops about 50mg, and swapping it for a medium cold brew cuts about a third off the dose. For an afternoon drink that will not wreck your sleep, the vanilla chai at 54 to 107mg is the middle ground between tea and coffee.
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For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. How caffeine affects you depends on your own tolerance and health, so treat these numbers as information, not advice.
That 400mg line is worth keeping in view here. A large Dunkin' iced coffee (396mg) or a large frozen coffee (393mg) is basically the full day's amount in one cup. Order a medium if you plan on drinking anything else caffeinated later.
How Dunkin' compares to other chains
Ounce for ounce, Dunkin's brewed coffee is milder than Starbucks drip but served in cup sizes that close the gap fast. If you are weighing the two menus, the full Starbucks caffeine chart is the direct comparison. On the cheaper end, McDonald's coffee caffeine numbers run noticeably lower per cup (a large McCafe coffee is about 145mg), which makes McCafe the gentler option and Dunkin' the middle of the road.
If the iced coffee versus cold brew result surprised you, that pattern is specific to how each chain brews. Our cold brew caffeine guide covers why cold brew can be either the strongest or the weakest thing on a menu depending on the steep ratio.
Looking for a different drink? The full caffeine database has every chain and can we have verified.
FAQ
Which Dunkin' drink has the most caffeine? The large (32 oz) iced coffee, at about 396mg. The large frozen coffee is right behind it at 393mg. Among hot drinks, the extra large hot coffee leads at about 330mg.
Does Dunkin' decaf have caffeine? Yes, a small amount. Dunkin' decaf ranges from about 7mg in a small to 18mg in an extra large. That is far below regular coffee but not zero, so it can add up if you drink several cups.
Is Dunkin' cold brew stronger than its iced coffee? No. Dunkin's iced coffee has more caffeine at every size: 198mg versus 174mg in a small, and 396mg versus 347mg in a large. The iced coffee is double brewed hot coffee served over ice, which keeps it stronger than the cold brew steep.