Java Monster has more caffeine than Zevia Energy on both counts: 188mg per 15 oz can against 120mg per 12 oz can, and about 13mg per fluid ounce against 10. The serving sizes differ, so the table below shows both ways of counting.
Java Monster vs Zevia Energy: the numbers
| Java Monster | Zevia Energy | |
|---|---|---|
| Caffeine per serving | 188mg per 15 oz can | 120mg per 12 oz can |
| Caffeine per fl oz | 12.5mg | 10.0mg |
| Servings to reach 400mg (FDA context) | 2.1 | 3.3 |
Sources: Java Monster's figure is verified in our Java Monster caffeine guide against Caffeine Informer (source); Zevia Energy's figure is verified in our Zevia Energy guide against Zevia / Caffeine Informer (source).
Which one should you pick?
Pick Zevia Energy when you want the lighter dose or a slower ramp, and Java Monster 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
- Java Monster: the full caffeine guide
- Zevia Energy: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
FAQ
Does Java Monster or Zevia Energy have more caffeine? Java Monster: 188mg per 15 oz can versus 120mg per 12 oz can for Zevia Energy.
Which is stronger per ounce? Java Monster, at about 12.5mg per fluid ounce versus 10.0mg for Zevia Energy.
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