Java Monster carries more total caffeine per serving (200mg per 15 oz can vs 170mg per 12 oz serving), but ounce for ounce SToK Extra Bold cold brew is actually the stronger drink at about 14mg per fluid ounce against 13. Which one "has more caffeine" depends on whether you measure the container or the concentration.
SToK Extra Bold cold brew vs Java Monster: the numbers
| SToK Extra Bold cold brew | Java Monster | |
|---|---|---|
| Caffeine per serving | 170mg per 12 oz serving | 200mg per 15 oz can |
| Caffeine per fl oz | 14.2mg | 13.3mg |
| Servings to reach 400mg (FDA context) | 2.4 | 2.0 |
Sources: SToK Extra Bold cold brew's figure is verified in our SToK Extra Bold cold brew caffeine guide against SToK FAQ (source); Java Monster's figure is verified in our Java Monster guide against Caffeine Informer (source).
Which one should you pick?
Pick SToK Extra Bold cold brew 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
- SToK Extra Bold cold brew: the full caffeine guide
- Java Monster: the full caffeine guide
- The verified caffeine database
FAQ
Does SToK Extra Bold cold brew or Java Monster have more caffeine? Java Monster: 200mg per 15 oz can versus 170mg per 12 oz serving for SToK Extra Bold cold brew.
Which is stronger per ounce? SToK Extra Bold cold brew, at about 14.2mg per fluid ounce versus 13.3mg for Java Monster.
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.