Starbucks
How much caffeine is in Starbucks Cold Brew?
Data checked against the source on 2026-10-03 by Oleksii Y.
One Grande, 16 fl oz of Starbucks Cold Brew has 205 mg of caffeine, according to Starbucks Coffee Company.
How Starbucks Cold Brew compares
- Strength: 43 mg per 100 ml.
- One Grande, 16 fl oz has as much caffeine as about 2 cups of brewed coffee, which has 94.8 mg per 8 fl oz cup.
How much will be left at bedtime?
1 × Grande, 16 fl oz of Starbucks Cold Brew
Left at 11:00 PM (8 h later), average metabolism
≈ 68 mg
Range 32–103 mg (fast to slow metabolism)
To be at 50 mg or less by bedtime, have 205 mg by 12:04 PM (average) or 5:58 AM (slow metabolism).
What sleep studies found near this dose
- Gardiner et al. 2023 (meta-analysis): To avoid losing sleep time, the authors suggest a coffee (107 mg per 250 ml) at least 8.8 hours before bed.
- Gardiner et al. 2023 (meta-analysis): For a pre-workout serving (217.5 mg), the authors suggest at least 13.2 hours before bed.
Estimate from a simple model: half-life of 3, 5 or 8 hours, 50 mg bedtime target. How we calculate
Caffeine by size
| Serving | Caffeine |
|---|---|
| Grande, 16 fl oz | 205 mg |
| Tall, 12 fl oz | 155 mg |
| Venti, 24 fl oz | 310 mg |
| Trenta, 30 fl oz | 360 mg |
How long does Starbucks Cold Brew stay in your system?
Our model halves caffeine every 5 hours for average metabolism, and every 3 or 8 hours for fast or slow metabolism. From one Grande, 16 fl oz of Starbucks Cold Brew (205 mg), about 103 mg is still in your body 5 hours later and about 51 mg after 10 hours. If you clear caffeine slowly (an 8-hour half-life), about 86 mg is left after 10 hours.
Estimated caffeine left at 11:00 PM from one Grande, 16 fl oz (205 mg), using a half-life of 5 hours for average metabolism and 3 to 8 hours for the range. How we calculate
| Had at | Left at bedtime (average) | Range |
|---|---|---|
| 8:00 AM (15 h before bed) | ≈ 26 mg | 6–56 mg |
| 12:00 PM (11 h before bed) | ≈ 45 mg | 16–79 mg |
| 3:00 PM (8 h before bed) | ≈ 68 mg | 32–103 mg |
| 6:00 PM (5 h before bed) | ≈ 103 mg | 65–133 mg |
How many fit in a day?
Reference amounts are for caffeine from all sources combined. Counted at the upper end of the stated amount, one serving at a time:
- Up to 400 mg a day for most healthy adults (FDA, EFSA): about 1 serving.
- Up to 200 mg at one time for healthy adults (EFSA): about 0 servings in one go.
- Up to 200 mg a day in pregnancy (EFSA, NHS): about 0 servings.
These are reference amounts for groups of people, not a personal limit. Some people feel jittery or sleep worse on much less. See the cutoff calculator for timing.
Good to know
A Grande Starbucks Cold Brew lists less caffeine than a Grande Pike Place Roast brewed coffee (315 mg).
Starbucks Cold Brew vs other Starbucks cold coffee drinks
- Starbucks Nitro Cold Brew: Starbucks Cold Brew has less caffeine than Starbucks Nitro Cold Brew per Grande, 16 fl oz: 205 mg vs 280 mg.
- Starbucks Nitro Cold Brew Black Unsweet (can): Starbucks Cold Brew has less caffeine than Starbucks Nitro Cold Brew Black Unsweet (can) per 100 ml (43 vs 55 mg). Starbucks Cold Brew: 205 mg per Grande, 16 fl oz; Starbucks Nitro Cold Brew Black Unsweet (can): 155 mg per 9.6 fl oz can (284 ml). Per serving the order flips, because the servings differ in size.
- Starbucks Iced Coffee: Starbucks Cold Brew has more caffeine than Starbucks Iced Coffee per Grande, 16 fl oz: 205 mg vs 185 mg.
Common questions
How much caffeine is in Starbucks Cold Brew?
Starbucks Coffee Company gives 205 mg of caffeine per Grande, 16 fl oz. Other sizes are in the table on this page.
How many Starbucks Cold Brew servings can I have in a day?
The FDA and EFSA cite up to 400 mg of caffeine a day, from all sources combined, for most healthy adults. At 205 mg per Grande, 16 fl oz, that is about 1 serving if Starbucks Cold Brew is your only source. In pregnancy the reference is 200 mg a day.
How late can I drink Starbucks Cold Brew?
With an 11:00 PM bedtime, our model suggests having one serving by about 12:04 PM for average metabolism, or 5:58 AM if you clear caffeine slowly. This is an estimate, not a rule.
How long does Starbucks Cold Brew stay in your system?
Of the 205 mg in one Grande, 16 fl oz, roughly 103 mg remains after 5 hours and 51 mg after 10 hours with our average 5-hour half-life. From fast to slow metabolism, 10 hours later it is between 20 and 86 mg.
Where the number comes from
- Starbucks Cold Brew. Starbucks Coffee Company. Nutrition "Caffeine" field for each size (Tall 155, Grande 205, Venti 310, Trenta 360 mg); page data from /apiproxy/v1/ordering/2121255/iced. Accessed 2026-10-02. Source ↗
- Pike Place Roast (brewed coffee). Starbucks Coffee Company. Nutrition "Caffeine" field for each size (Short 155, Tall 235, Grande 315, Venti 390 mg; "Caffeine Range" maximum 195, 290, 390, 490 mg; footnote "** Caffeine is an approximate value."); page data from /apiproxy/v1/ordering/480/hot. Accessed 2026-10-02. Source ↗
Recipes and labels change. If a number here no longer matches the label, the label wins.
General information, not medical advice
If you feel unwell after caffeine — for example chest pain, a fast or irregular heartbeat that does not settle, fainting, confusion or trouble breathing — get urgent medical help. If you are pregnant or breastfeeding, under 18, take medication, or have a heart, liver or anxiety condition, high blood pressure or a sleep disorder, ask a doctor or pharmacist what amount is right for you.
Sources
- U.S. Food and Drug Administration (2024). Spilling the Beans: How Much Caffeine is Too Much? FDA Consumer Updates. fda.gov ↗
- European Food Safety Authority. Caffeine | EFSA. EFSA topic page (summary of the 2015 Scientific Opinion on the safety of caffeine). efsa.europa.eu ↗
- NHS. Foods to avoid in pregnancy. NHS. nhs.uk ↗
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