Barista Life Blog · 1 min read

Peet's brewed coffee vs Starbucks cold brew (grande): which has more caffeine?

Starbucks cold brew (grande) carries more total caffeine per serving (205mg per 16 oz grande vs 150mg per 8 oz cup), but ounce for ounce Peet's brewed coffee is actually the stronger drink at about 19mg per fluid ounce against 13. Which one "has more caffeine" depends on whether you measure the container or the concentration.

Peet's brewed coffee vs Starbucks cold brew (grande): the numbers

Peet's brewed coffee Starbucks cold brew (grande)
Caffeine per serving 150mg per 8 oz cup 205mg per 16 oz grande
Caffeine per fl oz 18.8mg 12.8mg
Servings to reach 400mg (FDA context) 2.7 2.0

Sources: Peet's brewed coffee's figure is verified in our Peet's brewed coffee 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 Peet's brewed coffee 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

FAQ

Does Peet's brewed coffee or Starbucks cold brew (grande) have more caffeine? Starbucks cold brew (grande): 205mg per 16 oz grande versus 150mg per 8 oz cup for Peet's brewed coffee.

Which is stronger per ounce? Peet's brewed coffee, at about 18.8mg per fluid ounce versus 12.8mg for Starbucks cold brew (grande).

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