Starbucks cold brew (grande) has more caffeine than Dunkin iced latte (medium) on both counts: 205mg per 16 oz grande against 166mg per 24 oz medium, and about 13mg per fluid ounce against 7. The serving sizes differ, so the table below shows both ways of counting.
Dunkin iced latte (medium) vs Starbucks cold brew (grande): the numbers
| Dunkin iced latte (medium) | Starbucks cold brew (grande) | |
|---|---|---|
| Caffeine per serving | 166mg per 24 oz medium | 205mg per 16 oz grande |
| Caffeine per fl oz | 6.9mg | 12.8mg |
| Servings to reach 400mg (FDA context) | 2.4 | 2.0 |
Sources: Dunkin iced latte (medium)'s figure is verified in our Dunkin iced latte (medium) caffeine guide against Caffeine Informer (source); Starbucks cold brew (grande)'s figure is verified in our Starbucks cold brew (grande) guide against Starbucks menu data (source).
Which one should you pick?
Pick Dunkin iced latte (medium) when you want the lighter dose or a slower ramp, and Starbucks cold brew (grande) 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 iced latte (medium): the full caffeine guide
- Starbucks cold brew (grande): the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
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Gear from this guide
FAQ
Does Dunkin iced latte (medium) or Starbucks cold brew (grande) have more caffeine? Starbucks cold brew (grande): 205mg per 16 oz grande versus 166mg per 24 oz medium for Dunkin iced latte (medium).
Which is stronger per ounce? Starbucks cold brew (grande), at about 12.8mg per fluid ounce versus 6.9mg for Dunkin iced latte (medium).
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