Great sleep often starts hours before bedtime.
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CalculatorCaffeine Cutoff
Caffeine Cutoff
Calculator
Caffeine has a long half-life. Find your ideal last cup time based on your sensitivity and sleep goals.
PersonalizedTailored to your unique sensitivity
Science-backedBased on caffeine half-life research
Better sleepFind your cutoff for deeper rest
1. What time do you usually go to bed?
10
:30
2. How sensitive are you to caffeine?
3. How strong was your last caffeine?
Your caffeine cutoff time
2:30 PM Recommended
Try to have your last cup by this time for your best sleep.
7:00 AMWake Up
2:30 PMLast Caffeine
10:30 PMBedtime
Why this time?Caffeine has a half-life of ~5–6 hours. By 2:30 PM, most of the caffeine will be out of your system by bedtime (8 hours later).Learn more about caffeine & sleep →
Your best match
Make every hour after your cutoff count — Mellow CloudAlign™ Pillow
Your cutoff protects falling asleep. The right setup protects staying asleep. From the products we've reviewed, your best match:
Based on your caffeine cutoff
Best matchMellow
Mellow CloudAlign™ Pillow
- Deeper, cooler sleep makes the hours after your last cup more restorative
- Chiropractor-designed 3-zone support cuts night-time tossing
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30-night trial · Lifetime warranty
Recommendations are based on your answers. Restord may earn a commission if you buy through our links — it never affects what we recommend.
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Backed by sleep science
How caffeine affects your sleep
Half-lifeCaffeine's half-life is about 5–6 hours.
Stays in your systemIt lingers for hours, even when you don't feel it.
Blocks sleep pressureCaffeine blocks adenosine, the chemical that builds sleep pressure.
Impacts deep sleepLate caffeine can reduce deep sleep and increase nighttime wakeups.
Common questions
FAQ
Your next step
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