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When to stop caffeine, by bedtime
The cutoff is not a fixed hour. It depends on when you go to bed and on how much caffeine is in the cup. Find your bedtime in the first column and read across.
| Bedtime | Filter coffee | Espresso | Monster |
|---|---|---|---|
| 9 pm | 1:36 pm | 4:56 pm | 9:24 am |
| 9:30 pm | 2:06 pm | 5:26 pm | 9:54 am |
| 10 pm | 2:36 pm | 5:56 pm | 10:24 am |
| 10:30 pm | 3:06 pm | 6:26 pm | 10:54 am |
| 11 pm | 3:36 pm | 6:56 pm | 11:24 am |
| 11:30 pm | 4:06 pm | 7:26 pm | 11:54 am |
| midnight | 4:36 pm | 7:56 pm | 12:24 pm |
| 1 am | 5:36 pm | 8:56 pm | 1:24 pm |
Each bedtime has its own page with the cutoff for all 36 drinks, the answer in milligrams, and what changes if you clear caffeine slowly. The times are for an average adult and assume the drink is the only caffeine still in your system.
A rule such as no coffee after 2 pm works for one drink and one bedtime. It is late for a cold brew and early for an espresso. Counting back from your bedtime by the time a dose needs to clear gives an answer that holds for both.
Look it up another way
How long a dose lastsFrom 50 mg to 600 mg, hour by hourDrink against drinkRed Bull or Monster, matcha or coffee, side by side
Check your own drink and hour
Half-life 5.7 h · peak at 45 min · sleep threshold 40 mgAt bedtime
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Below 40 mg at
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