Espresso vs Energy drink: which has more caffeine?
A cup of energy drink has on average about 1.3× more caffeine than espresso.
Per 100 ml: espresso has about 6.3× more caffeine than energy drink.
| Espresso | Energy drink | |
|---|---|---|
| Caffeine per cup | 40–63 mg | 79 mg |
| Volume | 30 ml | 237 ml |
| mg / 100 ml (average) | 210 | 33.3 |
| Cups to reach 400 mg a day (adult) | 6 | 5 |
Frequently asked questions
Which has more caffeine: Espresso or Energy drink?
A cup of energy drink has on average about 1.3× more caffeine than espresso.
How many cups of energy drink equal one cup of espresso?
Using average values, one cup of espresso (63 mg) equals about 0.8 cups of energy drink (79 mg). This is a guide, since both drinks vary by batch and preparation.
Which is better in the evening?
Espresso has less caffeine per cup (about 63 mg versus about 79 mg for energy drink). After 6 hours roughly half to a third of what you drank remains, but sensitivity varies a lot.
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Sources and method
- Mayo Clinic: Caffeine content for coffee, tea, soda and more
- EUFIC: EFSA opinion on the safety of caffeine (2015)
Data checked 2026-10-24. Ranges are shown because studies report different numbers. General information, not medical advice.