Peace Tea has more caffeine than Sprite on both counts: 23mg per 23 oz can against 0mg per 12 oz can, and about 1mg per fluid ounce against 0. 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.
Peace Tea vs Sprite: the numbers
| Peace Tea | Sprite | |
|---|---|---|
| Caffeine per serving | 23mg per 23 oz can | 0mg per 12 oz can |
| Caffeine per fl oz | 1.0mg | 0.0mg |
| Servings to reach 400mg (FDA context) | 17.4 | n/a (caffeine-free) |
Sources: Peace Tea's figure is verified in our Peace Tea caffeine guide against Caffeine Informer (source); Sprite's figure is verified in our Sprite guide against Caffeine Informer (source).
The concentration gap is the striking part: Peace Tea packs roughly 100 times the caffeine per ounce. Sipping speed matters at that density; a 23 oz can finished in minutes hits differently than the same milligrams spread over a slow cup.
Which one should you pick?
Pick Sprite when you want the lighter dose or a slower ramp, and Peace Tea 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
FAQ
Does Peace Tea or Sprite have more caffeine? Peace Tea: 23mg per 23 oz can versus 0mg per 12 oz can for Sprite.
Which is stronger per ounce? Peace Tea, at about 1.0mg per fluid ounce versus 0.0mg for Sprite.
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.