Starbucks Chai Latte has more caffeine than Starbucks London Fog: 95mg vs 40mg in the same 16 oz grande. That is a 55mg gap, and since the servings match, the per-serving number is the whole story.
Starbucks Chai Latte vs Starbucks London Fog: the numbers
| Starbucks Chai Latte | Starbucks London Fog | |
|---|---|---|
| Caffeine per serving | 95mg per 16 oz grande | 40mg per 16 oz grande (40mg at every size) |
| Caffeine per fl oz | 5.9mg | 2.5mg |
| Servings to reach 400mg (FDA context) | 4.2 | 10.0 |
Sources: Starbucks Chai Latte's figure is verified in our Starbucks Chai Latte caffeine guide against Starbucks nutrition listing (source); Starbucks London Fog's figure is verified in our Starbucks London Fog guide against Starbucks nutrition listing (source).
Which one should you pick?
Pick Starbucks London Fog 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
- Starbucks Chai Latte: the full caffeine guide
- Starbucks London Fog: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
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Gear from this guide
FAQ
Does Starbucks Chai Latte or Starbucks London Fog have more caffeine? Starbucks Chai Latte: 95mg per 16 oz grande versus 40mg per 16 oz grande (40mg at every size) for Starbucks London Fog.
Which is stronger per ounce? Starbucks Chai Latte, at about 5.9mg per fluid ounce versus 2.5mg for Starbucks London Fog.
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.
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