Filter coffee vs Green tea: which has more caffeine?
A cup of filter coffee has on average about 4.8× more caffeine than green tea.
Per 100 ml: filter coffee has about 4.8× more caffeine than green tea.
| Filter coffee | Green tea | |
|---|---|---|
| Caffeine per cup | 80–107 mg | 11–29 mg |
| Volume | 237 ml | 237 ml |
| mg / 100 ml (average) | 40.5 | 8.4 |
| Cups to reach 400 mg a day (adult) | 4 | 20 |
Frequently asked questions
Which has more caffeine: Filter coffee or Green tea?
A cup of filter coffee has on average about 4.8× more caffeine than green tea.
How many cups of green tea equal one cup of filter coffee?
Using average values, one cup of filter coffee (96 mg) equals about 4.8 cups of green tea (20 mg). This is a guide, since both drinks vary by batch and preparation.
Which is better in the evening?
Green tea has less caffeine per cup (about 20 mg versus about 96 mg for filter coffee). After 6 hours roughly half to a third of what you drank remains, but sensitivity varies a lot.
Try it
Sources and method
- Mayo Clinic: Caffeine content for coffee, tea, soda and more
- EUFIC: EFSA opinion on the safety of caffeine (2015)
- Ayakdaş & Ağagündüz, Foods 2025;14(13):2313 (68 tea samples)
Data checked 2026-10-24. Ranges are shown because studies report different numbers. General information, not medical advice.