Ghost Energy has more caffeine than UPTIME Energy on both counts: 200mg per 16 oz can against 142mg per 12 oz can, and about 12mg per fluid ounce against 12. The serving sizes differ, so the table below shows both ways of counting.
Ghost Energy vs UPTIME Energy: the numbers
| Ghost Energy | UPTIME Energy | |
|---|---|---|
| Caffeine per serving | 200mg per 16 oz can | 142mg per 12 oz can |
| Caffeine per fl oz | 12.5mg | 11.8mg |
| Servings to reach 400mg (FDA context) | 2.0 | 2.8 |
Sources: Ghost Energy's figure is verified in our Ghost Energy caffeine guide against Caffeine Informer (source); UPTIME Energy's figure is verified in our UPTIME Energy guide against Caffeine Informer (source).
Which one should you pick?
Pick UPTIME Energy when you want the lighter dose or a slower ramp, and Ghost Energy 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
- Ghost Energy: the full caffeine guide
- UPTIME Energy: the full caffeine guide
- The verified caffeine database
FAQ
Does Ghost Energy or UPTIME Energy have more caffeine? Ghost Energy: 200mg per 16 oz can versus 142mg per 12 oz can for UPTIME Energy.
Which is stronger per ounce? Ghost Energy, at about 12.5mg per fluid ounce versus 11.8mg for UPTIME Energy.
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.