Coffee & Espresso · Drink database
Caffeine in Starbucks Starbucks Iced Coffee (unsweetened)
235 mg
per venti Very high
≈ 9.8 mg per fl oz
The ceiling is in sight. The ceiling is not a challenge.
Every serving size
| Serving | Caffeine | % of 400 mg day | Finish by (10:30 PM bed) |
|---|---|---|---|
| Grande (16 oz) | 165 mg | 41% | 1:53 PM |
| Venti (24 oz) | 235 mg | 59% | 11:20 AM |
Cutoff column: average metabolism (5 h half-life), ~50 mg bedtime threshold — run it with your bedtime →
How it compares
Starbucks Starbucks Iced Coffee (unsweetened) 235 mg
Green tea (8 oz) 28 mg
Black tea (8 oz) 47 mg
Brewed coffee (8 oz) 96 mg
Monster (16 oz) 160 mg
Bang (16 oz) 300 mg
Over half the FDA daily limit in one serving. The tracker will flag stacking a second one — and the cutoff calculator will push this earlier than you expect. At 235 mg per venti, this drink is 59% of the FDA's 400 mg daily ceiling for healthy adults.
Source: Manufacturer label · confidence: high
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