Starbucks Chai Latte carries more total caffeine per serving (95mg per 16 oz grande vs 60mg per 8 oz cup (1 tsp, ~2g)), but ounce for ounce matcha is actually the stronger drink at about 8mg per fluid ounce against 6. Which one "has more caffeine" depends on whether you measure the container or the concentration.
matcha vs Starbucks Chai Latte: the numbers
| matcha | Starbucks Chai Latte | |
|---|---|---|
| Caffeine per serving | 60mg per 8 oz cup (1 tsp, ~2g) | 95mg per 16 oz grande |
| Caffeine per fl oz | 7.5mg | 5.9mg |
| Servings to reach 400mg (FDA context) | 6.7 | 4.2 |
Sources: matcha's figure is verified in our matcha caffeine guide against USDA FoodData Central (per-gram) / compiled (source); Starbucks Chai Latte's figure is verified in our Starbucks Chai Latte guide against Starbucks nutrition listing (source).
Which one should you pick?
Pick matcha when you want the lighter dose or a slower ramp, and Starbucks Chai Latte 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
- matcha: the full caffeine guide
- Starbucks Chai Latte: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
FAQ
Does matcha or Starbucks Chai Latte have more caffeine? Starbucks Chai Latte: 95mg per 16 oz grande versus 60mg per 8 oz cup (1 tsp, ~2g) for matcha.
Which is stronger per ounce? matcha, at about 7.5mg per fluid ounce versus 5.9mg for Starbucks Chai Latte.
Comparing caffeine? The caffeine comparison tool puts hundreds of drinks side by side, and the caffeine curfew calculator can check your cutoff time for tonight.