Caffeine Cutoff
Optimize your caffeine timing based on sleep science. Know exactly when to switch to alternatives for better rest.
16:38
Current Time
Schedule & Intake
Average cup = ~100mg caffeine
Caffeine Analysis
Current Caffeine Level
0mgNo caffeine consumed today
Last Safe Caffeine Time
12:00
Based on your 23:00 bedtime
Time Until Bed
6h 22m
Time Until Safe
Now
You can safely have caffeine for a while longer
SAFE
Healthy Alternatives
Smart suggestions based on your current intake and time
Short Walk
Recommended
⚡⚡⚡
activity
5-10 minute walk to boost circulation
Benefits:
Natural energy
Clears mind
Improves mood
Best in daylight
Cold Water
⚡
hydration
Hydration can boost alertness naturally
Benefits:
Zero calories
Immediate effect
Improves focus
Anytime
Protein Snack
⚡⚡
nutrition
Nuts, yogurt, or fruit for sustained energy
Benefits:
Stable blood sugar
Lasting energy
Brain fuel
Between meals
Deep Breathing
⚡
activity
4-7-8 breathing technique for energy
Benefits:
Reduces stress
Increases oxygen
Quick boost
Anytime
Silent Mode Controls
Mute caffeine warnings during low-risk hours
Enable Silent Mode
Reduce notifications during specified hours
Off
How Silent Mode Works:
- • Caffeine calculations continue running normally
- • Warning alerts and notifications are suppressed
- • Status badges and data remain visible
- • Perfect for evening hours when you're winding down
Current Status:
Notifications enabled
How it works:
Caffeine has a half-life of ~5-6 hours, meaning it takes this long for your body to eliminate half the caffeine. This calculator models your caffeine levels to recommend the latest safe consumption time for quality sleep.