Starbucks
How much caffeine is in Starbucks Caffè Americano?
Data checked against the source on 2026-10-03 by Oleksii Y.
One Grande, 16 fl oz of Starbucks Caffè Americano has 225 mg of caffeine, according to Starbucks Coffee Company.
How Starbucks Caffè Americano compares
- Strength: 48 mg per 100 ml.
- One Grande, 16 fl oz has as much caffeine as about 2.5 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 Caffè Americano
Left at 11:00 PM (8 h later), average metabolism
≈ 74 mg
Range 35–113 mg (fast to slow metabolism)
To be at 50 mg or less by bedtime, have 225 mg by 11:24 AM (average) or 4:53 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 | 225 mg |
| Short, 8 fl oz | 75 mg |
| Tall, 12 fl oz | 150 mg |
| Venti, 20 fl oz | 300 mg |
How long does Starbucks Caffè Americano 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 Caffè Americano (225 mg), about 113 mg is still in your body 5 hours later and about 56 mg after 10 hours. If you clear caffeine slowly (an 8-hour half-life), about 95 mg is left after 10 hours.
Estimated caffeine left at 11:00 PM from one Grande, 16 fl oz (225 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) | ≈ 28 mg | 7–61 mg |
| 12:00 PM (11 h before bed) | ≈ 49 mg | 18–87 mg |
| 3:00 PM (8 h before bed) | ≈ 74 mg | 35–113 mg |
| 6:00 PM (5 h before bed) | ≈ 113 mg | 71–146 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
Starbucks lists 75 mg more caffeine for each larger Caffè Americano size, from 75 mg (Short) to 300 mg (Venti).
Starbucks Caffè Americano vs other Starbucks espresso drinks
- Starbucks Espresso: Starbucks Caffè Americano has less caffeine than Starbucks Espresso per 100 ml (48 vs 341 mg). Starbucks Caffè Americano: 225 mg per Grande, 16 fl oz; Starbucks Espresso: 150 mg per Doppio, 1.5 fl oz (2 shots). Per serving the order flips, because the servings differ in size.
- Starbucks Caffè Latte: Starbucks Caffè Americano has more caffeine than Starbucks Caffè Latte per Grande, 16 fl oz: 225 mg vs 150 mg.
- Starbucks Coffee Frappuccino: Starbucks Caffè Americano has more caffeine than Starbucks Coffee Frappuccino per Grande, 16 fl oz: 225 mg vs 95 mg.
Common questions
How much caffeine is in Starbucks Caffè Americano?
Starbucks Coffee Company gives 225 mg of caffeine per Grande, 16 fl oz. Other sizes are in the table on this page.
How many Starbucks Caffè Americano 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 225 mg per Grande, 16 fl oz, that is about 1 serving if Starbucks Caffè Americano is your only source. In pregnancy the reference is 200 mg a day.
How late can I drink Starbucks Caffè Americano?
With an 11:00 PM bedtime, our model suggests having one serving by about 11:24 AM for average metabolism, or 4:53 AM if you clear caffeine slowly. This is an estimate, not a rule.
Does Starbucks Caffè Americano have more caffeine than Starbucks Espresso?
Starbucks Caffè Americano has less caffeine than Starbucks Espresso per 100 ml (48 vs 341 mg). Starbucks Caffè Americano: 225 mg per Grande, 16 fl oz; Starbucks Espresso: 150 mg per Doppio, 1.5 fl oz (2 shots). Per serving the order flips, because the servings differ in size.
How long does Starbucks Caffè Americano stay in your system?
Of the 225 mg in one Grande, 16 fl oz, roughly 113 mg remains after 5 hours and 56 mg after 10 hours with our average 5-hour half-life. From fast to slow metabolism, 10 hours later it is between 22 and 95 mg.
Where the number comes from
- Caffè Americano. Starbucks Coffee Company. Nutrition "Caffeine" field for each size (Short 75, Tall 150, Grande 225, Venti 300 mg); page data from /apiproxy/v1/ordering/406/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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