G Fuel Energy (can) has more caffeine than Starbucks Tripleshot Energy on both counts: 300mg per 16 oz can against 225mg per 15 oz can, and about 19mg per fluid ounce against 15. The serving sizes differ, so the table below shows both ways of counting.
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.
G Fuel Energy (can) vs Starbucks Tripleshot Energy: the numbers
| G Fuel Energy (can) | Starbucks Tripleshot Energy | |
|---|---|---|
| Caffeine per serving | 300mg per 16 oz can | 225mg per 15 oz can |
| Caffeine per fl oz | 18.8mg | 15.0mg |
| Servings to reach 400mg (FDA context) | 1.3 | 1.8 |
Sources: G Fuel Energy (can)'s figure is verified in our G Fuel Energy (can) caffeine guide against G Fuel product page (source); Starbucks Tripleshot Energy's figure is verified in our Starbucks Tripleshot Energy guide against Starbucks / Caffeine Informer (source).
Which one should you pick?
Pick Starbucks Tripleshot Energy when you want the lighter dose or a slower ramp, and G Fuel Energy (can) 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
- G Fuel Energy (can): the full caffeine guide
- Starbucks Tripleshot Energy: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
FAQ
Does G Fuel Energy (can) or Starbucks Tripleshot Energy have more caffeine? G Fuel Energy (can): 300mg per 16 oz can versus 225mg per 15 oz can for Starbucks Tripleshot Energy.
Which is stronger per ounce? G Fuel Energy (can), at about 18.8mg per fluid ounce versus 15.0mg for Starbucks Tripleshot Energy.
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