Instant coffee vs filter coffee: caffeine compared
Instant coffee has 65 mg of caffeine per 8 oz cup. Filter coffee has 96 mg per 8 oz cup.
Per serving filter coffee is ahead: 96 mg against 65 mg, about 50% more. Per 100 ml filter coffee is ahead: 40 mg against 27 mg, about 50% more.
| Instant coffee | Filter coffee | |
|---|---|---|
| Serving | 8 oz cup (240 ml) | 8 oz cup (240 ml) |
| Caffeine per serving | 65 mg | 96 mg |
| Caffeine per 100 ml | 27 mg | 40 mg |
| Caffeine per fl oz | 8.0 mg | 11.8 mg |
| In the same 12 oz (355 ml) | 96 mg | 142 mg |
| Share of the 400 mg daily limit | 16% | 24% |
| Peak level, 45 minutes in | 59 mg | 88 mg |
| Time to fall below 40 mg | 4 hours | 7 and a half hours |
| Latest for an 11 pm bedtime | 6:49 pm | 3:36 pm |
| Servings to reach 400 mg | 6.2 | 4.2 |
What the numbers mean
Instant coffee has about a third less caffeine than filter coffee, cup for cup. A teaspoon of granules carries a fixed amount, so it is also the more predictable of the two.
The number moves with the spoon. A heaped teaspoon, or two, brings instant level with filter. If you are counting, count teaspoons.
The full page for each
Common questions
Which has more caffeine, instant coffee or filter coffee?
Filter coffee. One 8 oz cup holds 96 mg, against 65 mg in one 8 oz cup of instant coffee: about 50% more.
Which is the better choice late in the day?
Instant coffee. For an 11 pm bedtime one serving can be had as late as 6:49 pm, against 3:36 pm for filter coffee.
How many servings of instant coffee equal one filter coffee?
About 1.5. One 8 oz cup of filter coffee holds 96 mg and one 8 oz cup of instant coffee holds 65 mg.
How many can I have in a day?
Going by the 400 mg daily limit for healthy adults: about 6 servings of instant coffee or 4 of filter coffee, if that is the only caffeine you have. Anything else with caffeine in it counts toward the same limit.
More comparisons
Look it up another way
Where these numbers come from
Every figure is calculated with the model the Cira app uses: caffeine peaks 45 minutes after you take it and halves every 5.7 hours, a typical value for healthy adults. The 40 mg sleep line is a working threshold of the model, and the 400 mg daily limit is the figure used by the European Food Safety Authority and the US FDA. These are averages. Smoking, pregnancy, the contraceptive pill and some medicines change how fast you clear caffeine. How the numbers are worked out.
