Coffee & Espresso · Drink database
Caffeine in Cold Brew Coffee
≈ 12.5 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) |
|---|---|---|---|
| 8 oz (8 oz) | 100 mg | 25% | 5:30 PM |
| 16 oz (16 oz) | 200 mg | 50% | 12:30 PM |
Cutoff column: average metabolism (5 h half-life), ~50 mg bedtime threshold — run it with your bedtime →
How it compares
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 200 mg per 16 oz, this drink is 50% of the FDA's 400 mg daily ceiling for healthy adults.
Long steep concentrates caffeine; ready-to-drink cold brew typically lands near 100 mg per 8 oz — about the same as drip, not the double people assume. Homemade concentrate varies wildly.
Source: USDA + chain labels · confidence: medium
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Related reading: coffee vs tea vs energy drinks · when to stop before bed