This caffeine half life reference table shows the caffeine remaining for a range of caffeine consumed values, assuming a hours since consumed of 5. Every figure is computed with the same engine that powers our Caffeine Half Life Calculator, so the numbers are exact.
| Caffeine consumed | Caffeine remaining |
|---|---|
| 50 mg | 25.0 |
| 100 mg | 50.0 |
| 150 mg | 75.0 |
| 200 mg | 100.0 |
| 300 mg | 150.0 |
| 400 mg | 200.0 |
| 600 mg | 300.0 |
| 1,000 mg | 500.0 |
| 1,400 mg | 700.0 |
| 2,000 mg | 1,000.0 |
How to use this table
Find the row closest to your caffeine consumed and read across to the caffeine remaining. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Caffeine Half Life Calculator for a precise answer.
Need a value that is not in the table? — the Caffeine Half Life Calculator does it instantly, for free, with the formula and a worked example built in.
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