Caffeine Calculator: for sleep

커피(카페인) 사용의 반감기를 계산하여 습관을 들이는 데 도움이 됩니다.

Enter your caffeine usage to see an estimate of how much caffeine will still be in your system around bed time!

Have more than one coffee (or any other caffeine containing beverage) a day?

You can add that too.

Also check to see if caffeine maybe carrying over to the next day and stacking up more than you'd think!