Caffeine Calculator

What is a Caffeine Calculator?

A caffeine calculator helps you determine the latest time you can safely consume caffeine without disrupting your sleep. Caffeine has a half-life of 5-6 hours, meaning that half of the caffeine you consume remains in your system after that time. Even 12 hours later, 25% is still circulating in your bloodstream.

Many people don't realize their afternoon coffee is keeping them awake at night. By calculating your caffeine cutoff time (typically 6+ hours before bed), you can enjoy your coffee guilt-free while ensuring it won't interfere with falling asleep or reduce your deep sleep quality.