Peet's brewed coffee has more caffeine than brewed black tea: 150mg vs 47mg in the same 8 oz cup. That is a 103mg gap, and since the cans match, the per-serving number is the whole story.
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.
Peet's brewed coffee vs brewed black tea: the numbers
| Peet's brewed coffee | brewed black tea | |
|---|---|---|
| Caffeine per serving | 150mg per 8 oz cup | 47mg per 8 oz cup |
| Caffeine per fl oz | 18.8mg | 5.9mg |
| Servings to reach 400mg (FDA context) | 2.7 | 8.5 |
Sources: Peet's brewed coffee's figure is verified in our Peet's brewed coffee caffeine guide against Caffeine Informer (source); brewed black tea's figure is verified in our brewed black tea guide against USDA FoodData Central (source).
The concentration gap is the striking part: Peet's brewed coffee packs roughly 3 times the caffeine per ounce. Sipping speed matters at that density; a 8 oz cup finished in minutes hits differently than the same milligrams spread over a slow cup.
Which one should you pick?
Pick brewed black tea when you want the lighter dose or a slower ramp, and Peet's brewed coffee 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
- Peet's brewed coffee: the full caffeine guide
- brewed black tea: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
FAQ
Does Peet's brewed coffee or brewed black tea have more caffeine? Peet's brewed coffee: 150mg per 8 oz cup versus 47mg per 8 oz cup for brewed black tea.
Which is stronger per ounce? Peet's brewed coffee, at about 18.8mg per fluid ounce versus 5.9mg for brewed black tea.
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