Starbucks Matcha Latte (grande) has more caffeine than Arizona Green Tea on both counts: 90mg per 16 oz grande against 7.5mg per 8 oz serving (23 oz can holds ~21.5mg), and about 6mg per fluid ounce against 1. The serving sizes differ, so the table below shows both ways of counting.
Starbucks Matcha Latte (grande) vs Arizona Green Tea: the numbers
| Starbucks Matcha Latte (grande) | Arizona Green Tea | |
|---|---|---|
| Caffeine per serving | 90mg per 16 oz grande | 7.5mg per 8 oz serving (23 oz can holds ~21.5mg) |
| Caffeine per fl oz | 5.6mg | 0.9mg |
| Servings to reach 400mg (FDA context) | 4.4 | 53.3 |
Sources: Starbucks Matcha Latte (grande)'s figure is verified in our Starbucks Matcha Latte (grande) caffeine guide against Caffeine Informer Starbucks guide (source); Arizona Green Tea's figure is verified in our Arizona Green Tea guide against Arizona published figure / Caffeine Informer (source).
The concentration gap is the striking part: Starbucks Matcha Latte (grande) packs roughly 6 times the caffeine per ounce. Sipping speed matters at that density; a 16 oz grande finished in minutes hits differently than the same milligrams spread over a slow cup.
Which one should you pick?
Pick Arizona Green Tea when you want the lighter dose or a slower ramp, and Starbucks Matcha Latte (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
- Starbucks Matcha Latte (grande): the full caffeine guide
- Arizona 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 Starbucks Matcha Latte (grande) or Arizona Green Tea have more caffeine? Starbucks Matcha Latte (grande): 90mg per 16 oz grande versus 7.5mg per 8 oz serving (23 oz can holds ~21.5mg) for Arizona Green Tea.
Which is stronger per ounce? Starbucks Matcha Latte (grande), at about 5.6mg per fluid ounce versus 0.9mg for Arizona Green Tea.
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