Dunkin hot coffee (medium) has more caffeine than ZOA on both counts: 210mg per 14 oz medium against 160mg per 12 oz can, and about 15mg per fluid ounce against 13. The serving sizes differ, so the table below shows both ways of counting.
These are different categories of drink, which changes how the caffeine arrives. Energy drinks and sodas list an exact number because caffeine is a measured additive; brewed drinks vary with the beans and the brew, so their figures are compiled averages. The numbers here are the standard published values for each.
ZOA vs Dunkin hot coffee (medium): the numbers
| ZOA | Dunkin hot coffee (medium) | |
|---|---|---|
| Caffeine per serving | 160mg per 12 oz can | 210mg per 14 oz medium |
| Caffeine per fl oz | 13.3mg | 15.0mg |
| Servings to reach 400mg (FDA context) | 2.5 | 1.9 |
Sources: ZOA's figure is verified in our ZOA caffeine guide against ZOA FAQ (source); Dunkin hot coffee (medium)'s figure is verified in our Dunkin hot coffee (medium) guide against Tasting Table / Dunkin figures (source).
Which one should you pick?
Pick ZOA when you want the lighter dose or a slower ramp, and Dunkin hot coffee (medium) 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
- ZOA: the full caffeine guide
- Dunkin hot coffee (medium): the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
FAQ
Does ZOA or Dunkin hot coffee (medium) have more caffeine? Dunkin hot coffee (medium): 210mg per 14 oz medium versus 160mg per 12 oz can for ZOA.
Which is stronger per ounce? Dunkin hot coffee (medium), at about 15.0mg per fluid ounce versus 13.3mg for ZOA.
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.