Tazo chai (brewed) has more caffeine than brewed green tea: 47mg vs 28mg in the same 8 oz cup. That is a 19mg gap, and since the cups match, the per-serving number is the whole story.
Tazo chai (brewed) vs brewed green tea: the numbers
| Tazo chai (brewed) | brewed green tea | |
|---|---|---|
| Caffeine per serving | 47mg per 8 oz cup | 28mg per 8 oz cup |
| Caffeine per fl oz | 5.9mg | 3.5mg |
| Servings to reach 400mg (FDA context) | 8.5 | 14.3 |
Sources: Tazo chai (brewed)'s figure is verified in our Tazo chai (brewed) caffeine guide against Caffeine Informer (source); brewed green tea's figure is verified in our brewed green tea guide against USDA FoodData Central (source).
Which one should you pick?
Pick brewed green tea when you want the lighter dose or a slower ramp, and Tazo chai (brewed) 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
- Tazo chai (brewed): the full caffeine guide
- brewed green tea: 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 Tazo chai (brewed) or brewed green tea have more caffeine? Tazo chai (brewed): 47mg per 8 oz cup versus 28mg per 8 oz cup for brewed green tea.
Which is stronger per ounce? Tazo chai (brewed), at about 5.9mg per fluid ounce versus 3.5mg for brewed green tea.
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