Starbucks Espresso contains 75 mg of caffeine per Solo shot 0.75 oz (22 ml / 0.7 oz). That is about 79% of the caffeine in a typical 8 oz cup of brewed coffee (about 95 mg). Concentration: 341 mg per 100 ml.
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Starbucks Espresso Caffeine Content by Serving
Figures are for Espresso (solo / doppio) (Starbucks).
| Serving | Volume | Caffeine | Per 100 ml | Level |
|---|---|---|---|---|
| Solo shot 0.75 oz | 22 ml / 0.7 oz | 75 mg | 340.9 mg | Low |
| Doppio 1.5 oz | 44 ml / 1.5 oz | 150 mg | 340.9 mg | High |
Source: caffeine figures from Caffeine Informer Starbucks guide (values sourced from starbucks.com), accessed 2026-06-11. Values can vary by batch, location, and preparation; check the label or the source for the latest figures.
How Starbucks Espresso Compares to Coffee
At 75 mg per Solo shot 0.75 oz, Starbucks Espresso delivers about 79% of the caffeine in a typical 8 oz cup of brewed coffee (about 95 mg). For a wider comparison across drinks, try the caffeine comparison tool or browse the full caffeine database.
When to Stop Drinking Starbucks Espresso Before Bed
With caffeine's median 5-hour half-life, a Solo shot 0.75 oz of Starbucks Espresso (75 mg) needs about 2 h 56 min to fall under 50 mg, the level where most people can fall asleep normally. That puts the last call at 7:00 PM (19:00) for a 10 PM bedtime and 8:00 PM (20:00) for an 11 PM bedtime. Individual half-lives range from roughly 2 to 12 hours, so treat these as a starting point.
The Starbucks Espresso sleep cutoff page has last-call times for four bedtimes, and the caffeine half-life calculator personalizes the curve to your metabolism.
