A Dunkin' Medium (14 oz) brewed coffee typically contains approximately 210 mg of caffeine. A Small is around 150 mg and a Large around 270 mg. Espresso-based drinks add about 98 mg per shot.
Dunkin' Caffeine Chart by Drink
Dunkin' publishes caffeine ranges on its nutrition pages. Values below reflect typical mid-range figures. Dunkin' uses four cup sizes: Small (10 oz), Medium (14 oz), Large (20 oz), and Extra Large (24 oz).
| Drink | Size | Caffeine (approx.) | Level |
|---|---|---|---|
| Original Blend Brewed Coffee | Small (10 oz) | ~150 mg | High |
| Original Blend Brewed Coffee | Medium (14 oz) | ~210 mg | High |
| Original Blend Brewed Coffee | Large (20 oz) | ~270 mg | High |
| Original Blend Brewed Coffee | X-Large (24 oz) | ~350 mg | Very High |
| Dark Roast Brewed Coffee | Medium | ~180 mg | High |
| Espresso Shot | Single (1.5 oz) | ~98 mg | Moderate |
| Espresso Shot | Double (3 oz) | ~196 mg | High |
| Latte | Small | ~98 mg | Moderate |
| Latte | Medium | ~166 mg | High |
| Latte | Large | ~252 mg | High |
| Cappuccino | Small | ~98 mg | Moderate |
| Cappuccino | Medium | ~166 mg | High |
| Americano | Medium | ~196 mg | High |
| Cold Brew | Small (10 oz) | ~174 mg | High |
| Cold Brew | Medium (14 oz) | ~260 mg | High |
| Iced Coffee | Small (16 oz) | ~198 mg | High |
| Iced Coffee | Medium (22 oz) | ~297 mg | Very High |
| Dunkin' Energy Drink (Boost) | Can (12 oz) | ~120 mg | Moderate |
| Dunkaccino | Small | ~20 mg | Low |
| Hot Chocolate | Medium | ~5 mg | Very Low |
Note: Dunkin' publishes caffeine as ranges (e.g., "204–284 mg" for a Medium iced coffee). The values above use the middle of published ranges. Check Dunkin's official nutrition page for the latest figures.
Why Dunkin' Caffeine Varies
Several factors make a "Medium coffee" from Dunkin' land anywhere from 170 mg to 300+ mg on a given day:
- Roast and blend: Original Blend vs. Dark Roast produce different caffeine levels per gram of coffee used. Dunkin' uses a medium-dark roast for Original Blend.
- Iced vs. hot: Dunkin' brews iced coffee at higher concentration before pouring over ice, so a 16 oz iced coffee often has more caffeine than a 16 oz hot coffee of the same size name.
- Espresso shots per size: A Small latte uses 1 shot; Medium uses 2; Large uses 3. This creates a stair-step caffeine profile similar to Starbucks.
- Seasonal and limited drinks: Holiday and limited-edition beverages often have less-publicized caffeine figures; treat them similarly to a same-size latte.
Dunkin' vs. Starbucks vs. Home Brewed — Caffeine Comparison
| Drink (comparable size ~14–16 oz) | Caffeine (approx.) |
|---|---|
| Starbucks Grande Brewed Coffee | ~310 mg |
| Dunkin' Medium Brewed Coffee | ~210 mg |
| Home-Brewed Drip Coffee (16 oz) | ~190 mg |
| Dunkin' Medium Cold Brew | ~260 mg |
| Dunkin' Medium Iced Coffee | ~230 mg |
| Black Tea (16 oz) | ~90–140 mg |
Dunkin' brewed coffee runs about 25–30% lower than an equivalent Starbucks brewed coffee, though both chains use similar cup sizes. The gap narrows when comparing iced coffees, where Dunkin' brews at higher concentration.
Timing Your Dunkin' Order for Better Sleep
With caffeine's typical 5-hour half-life, a Dunkin' Medium (210 mg) at 1 PM leaves roughly 105 mg in your system by 6 PM — enough to delay sleep onset even if you don't feel jittery. The practical 8-hour cutoff rule suggests finishing your last Dunkin' order at least 8 hours before bed:
- Bedtime 10 PM → last coffee by 2 PM
- Bedtime 11 PM → last coffee by 3 PM
- Early bedtime 9 PM → last coffee by 1 PM
Large iced coffees (297 mg) warrant an even earlier cutoff. Use our Caffeine Half-Life Calculator to model your exact Dunkin' order, or try the Coffee Cutoff Time tool for a one-click bedtime answer.
Track Your Daily Dunkin' Caffeine
Two Dunkin' Large iced coffees (594 mg combined) already exceed the FDA's guideline of 400 mg per day for healthy adults. If you're pregnant, a single Medium brewed coffee puts you close to the 200 mg/day recommended limit. Unbuzz lets you log any Dunkin' drink and watch your daily total in real time.
