Sleep Impact
Will caffeine affect your sleep tonight?
Set your bedtime and sensitivity to see how much caffeine remains when you go to bed — and your recommended cutoff time.
Your drinks today
No drinks added yet. Add a drink to get started.
Drink
Total today0 mg
Estimated Peak—
At bedtime—
Cutoff time—
Calculations assume an average adult caffeine half-life of approximately 5 hours and an estimated absorption period of around 45 minutes. Individual responses to caffeine may vary.