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A Grande Starbucks Cold Brew has 205mg of caffeine, per Starbucks nutrition and the Caffeine Informer listing. The full ladder runs 155mg Tall, 205mg Grande, 310mg Venti iced, and 360mg Trenta. Cold brew is steeped in cold water for about 20 hours, so it lands higher than a shot-based iced coffee at the same size.
Why cold brew reads higher than you expect
People assume cold brew is smooth so it must be weak. Opposite. The long steep pulls a lot of caffeine into the water, and the grande and up come with more actual coffee than a standard iced coffee. That is why a Venti iced cold brew (310mg) clears the caffeine of two shots of espresso by a wide margin. The number that trips people up is the Trenta, which is only sold in cold drinks and holds 30 ounces. At 360mg it is one of the highest single caffeine pours on the standard menu.
Add flavor and the caffeine actually drops a little, because sweet cream or cold foam takes up volume that would otherwise be coffee. A Grande Vanilla Sweet Cream Cold Brew is 185mg, not 205mg, confirmed on Starbucks nutrition. Cold foam poured on plain cold brew keeps the base coffee amount, so it stays at the unsweetened numbers.
Starbucks cold brew caffeine by size and flavor
| Drink | Tall (12 oz) | Grande (16 oz) | Venti (24 oz) | Trenta (30 oz) |
|---|---|---|---|---|
| Cold Brew (unsweetened) | 155mg | 205mg | 310mg | 360mg |
| Cold Foam Cold Brew (plain) | 155mg | 205mg | 310mg | 360mg |
| Vanilla Sweet Cream Cold Brew | 140mg | 185mg | 275mg | 320mg |
| Salted Caramel Cream Cold Foam Cold Brew | 140mg | 185mg | 275mg | 320mg |
Figures from Caffeine Informer's Starbucks guide and Starbucks nutrition pages. Unsweetened cold brew is 5 calories a serving; the Grande Vanilla Sweet Cream runs about 110 calories with 14g sugar. Cream and cold foam variants share the same caffeine because they use the same sweet cream volume displacing coffee.
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.
Want to make the same steep at home for a fraction of the price? A jug of concentrate or a set of cold brew filters gets you close. Compare cold brew concentrate on Amazon or grab a cold brew pitcher to dial your own strength.
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Related caffeine breakdowns
- Starbucks Frappuccino caffeine by size and flavor
- Starbucks Pink Drink caffeine, explained
- The full Barista Life caffeine database
FAQ
Which Starbucks cold brew has the most caffeine? The Trenta unsweetened Cold Brew or plain Cold Foam Cold Brew at 360mg, since the Trenta is 30 ounces and only exists as a cold size.
Is cold brew stronger than regular Starbucks iced coffee? Yes at matched sizes. A Grande Cold Brew is 205mg versus 165mg for a Grande Iced Coffee, because the long cold steep extracts more caffeine.
Does Vanilla Sweet Cream Cold Brew have less caffeine? Slightly. A Grande is 185mg versus 205mg for plain, because the sweet cream takes up volume that would otherwise be coffee.