Caffeine Half-Life Calculator
Supplement DosageTrack caffeine metabolism based on your genetics and tolerance. Know when you can sleep peacefully.
Caffeine Half-Life
Understand caffeine metabolism.
Track caffeine metabolism based on your genetics and tolerance. Know when you can sleep peacefully.
Free access to all 200+ health calculators. Save your results and track progress.
Track how long caffeine stays in your system and its impact on sleep
Caffeine should be mostly cleared by bedtime
Recommended: Keep caffeine below 25mg at bedtime for minimal sleep disruption. Even 50mg can increase sleep latency by 20 minutes.
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Understand caffeine metabolism.