English breakfast tea has more caffeine than Peace Tea on both counts: 47mg per 8 oz cup against 23mg per 23 oz can, and about 6mg per fluid ounce against 1. The serving sizes differ, so the table below shows both ways of counting.
Peace Tea vs English breakfast tea: the numbers
| Peace Tea | English breakfast tea | |
|---|---|---|
| Caffeine per serving | 23mg per 23 oz can | 47mg per 8 oz cup |
| Caffeine per fl oz | 1.0mg | 5.9mg |
| Servings to reach 400mg (FDA context) | 17.4 | 8.5 |
Sources: Peace Tea's figure is verified in our Peace Tea caffeine guide against Caffeine Informer (source); English breakfast tea's figure is verified in our English breakfast tea guide against Twinings published figure (source).
The concentration gap is the striking part: English breakfast tea packs roughly 6 times the caffeine per ounce. Sipping speed matters at that density; a 8 oz cup finished in minutes hits differently than the same milligrams spread over a slow cup.
Which one should you pick?
Pick Peace Tea when you want the lighter dose or a slower ramp, and English breakfast 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
- Peace Tea: the full caffeine guide
- English breakfast tea: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
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Gear from this guide
FAQ
Does Peace Tea or English breakfast tea have more caffeine? English breakfast tea: 47mg per 8 oz cup versus 23mg per 23 oz can for Peace Tea.
Which is stronger per ounce? English breakfast tea, at about 5.9mg per fluid ounce versus 1.0mg for Peace Tea.
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.
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