How is caffeine cutoff estimated?
The calculator uses caffeine half-life math and your target bedtime to estimate when caffeine should be stopped.
Free Wellness Tool
Caffeine Cutoff Calculator
Free caffeine cutoff calculator. Estimate your latest coffee or tea time before bed using half-life and sensitivity settings.
Questions
What half-life should I use?
A common estimate is 5 hours, but sensitivity varies. If you are caffeine-sensitive, use a longer half-life setting.
Does this replace medical guidance?
No. It is an educational estimate and does not replace advice from a healthcare professional.