Stumptown Cold Brew (stubbie) has more caffeine than Dunkin' Extra Charged (medium) on both counts: 279mg per 10.5 oz bottle against 252mg per 14 oz medium, and about 27mg per fluid ounce against 18. The serving sizes differ, so the table below shows both ways of counting.
Dunkin' Extra Charged (medium) vs Stumptown Cold Brew (stubbie): the numbers
| Dunkin' Extra Charged (medium) | Stumptown Cold Brew (stubbie) | |
|---|---|---|
| Caffeine per serving | 252mg per 14 oz medium | 279mg per 10.5 oz bottle |
| Caffeine per fl oz | 18.0mg | 26.6mg |
| Servings to reach 400mg (FDA context) | 1.6 | 1.4 |
Sources: Dunkin' Extra Charged (medium)'s figure is verified in our Dunkin' Extra Charged (medium) caffeine guide against Caffeine Informer (source); Stumptown Cold Brew (stubbie)'s figure is verified in our Stumptown Cold Brew (stubbie) guide against Caffeine Informer (source).
Which one should you pick?
Pick Dunkin' Extra Charged (medium) when you want the lighter dose or a slower ramp, and Stumptown Cold Brew (stubbie) when you actually need the bigger hit and know your tolerance. If you are stacking either with other caffeinated drinks through the day, run the math against the 400mg reference rather than guessing.
For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. Tolerance and health vary, so treat these numbers as information, not advice.
Related reading
- Dunkin' Extra Charged (medium): the full caffeine guide
- Stumptown Cold Brew (stubbie): the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
FAQ
Does Dunkin' Extra Charged (medium) or Stumptown Cold Brew (stubbie) have more caffeine? Stumptown Cold Brew (stubbie): 279mg per 10.5 oz bottle versus 252mg per 14 oz medium for Dunkin' Extra Charged (medium).
Which is stronger per ounce? Stumptown Cold Brew (stubbie), at about 26.6mg per fluid ounce versus 18.0mg for Dunkin' Extra Charged (medium).
Comparing caffeine? The caffeine comparison tool puts hundreds of drinks side by side, and the caffeine curfew calculator can check your cutoff time for tonight.