A 12 fl oz serving of International Delight iced coffee carries roughly 78 to 98 mg of caffeine, and the brand's own labeling works out to about 88 mg for that pour. Per the 8 fl oz serving the carton suggests, that is 55 to 65 mg for the regular and Light lines, per Caffeine Informer. So the short version: one tall glass sits somewhere between a weak drip coffee and a real cup.
Why the carton stays vague about it
International Delight is a ready-to-drink bottled coffee, not a fresh brew, so the caffeine comes from whatever brewed coffee concentrate they blend into the milk and sugar base. That concentration is not held to a tight spec the way a spirit's proof is, which is why every reputable source quotes a range instead of one hard number. The 8 fl oz serving size printed on the carton is also smaller than what most people actually pour, so the "per serving" figure on the box undersells your real glass.
Flavor matters too. The Unsweetened Original is quoted a touch lower than the sweetened regular, about 52 to 62 mg per 8 oz. None of this is on the front of the carton, which is the whole reason people end up guessing.
Caffeine by serving size
| Serving | Product | Caffeine |
|---|---|---|
| 8 fl oz | Iced Coffee (regular and Light) | 55 to 65 mg |
| 8 fl oz | Unsweetened Original | 52 to 62 mg |
| 12 fl oz | Iced Coffee (suggested pour) | 78 to 98 mg (about 88 mg) |
| 64 fl oz | Full carton | about 470 mg |
Numbers from Caffeine Informer. Treat the carton figure as an average, not a promise, because brewed concentrate drifts batch to batch.
For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. How caffeine affects you depends on your own tolerance and health, so treat these numbers as information, not advice.
The line worth flagging is the full carton. At roughly 470 mg, drinking a whole 64 oz bottle in a sitting clears the 400 mg daily figure on its own. Nobody plans to do that, but this stuff pours easy and goes down like a milkshake, so it happens. If you are refilling the glass through a work morning, count the pours.
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How it stacks up behind the bar
A 12 oz International Delight at about 88 mg is a hair under a standard 12 oz brewed coffee, which usually runs 90 to 120 mg depending on the roast and how it was made. It is well under two shots of espresso, which land around 128 mg. So if you are switching from a real cafe pour to this because it tastes like dessert, know you are also dropping your caffeine a bit. For a lot of people that is a feature, not a bug. If you need the jolt, you will probably want a second glass, and that is where the sugar adds up faster than the caffeine.
Related reading
FAQ
How much caffeine is in a glass of International Delight iced coffee? A 12 oz pour is about 88 mg, within a quoted range of 78 to 98 mg. The carton's smaller 8 oz serving is 55 to 65 mg for the regular and Light versions.
Does International Delight iced coffee have more caffeine than regular coffee? No. At about 88 mg per 12 oz it sits just under a standard brewed coffee, which typically runs 90 to 120 mg for the same size.
Is it safe to drink a whole carton? A full 64 oz carton holds around 470 mg of caffeine, which is above the 400 mg the FDA cites as generally fine for healthy adults. Spreading it out or splitting it keeps you under that mark.