Wake Up Time Calculator
Calculate the best wake-up times based on when you go to bed. Avoid sleep inertia!
Sleep Cycle Science
Sleep at 11 PM → Wake at 4:44 AM, 6:14 AM, or 7:44 AM
Sleep Stages
- Light Sleep: Easy to wake, body relaxes
- Deep Sleep: Physical restoration, hardest to wake
- REM Sleep: Dreams, memory consolidation
Frequently Asked Questions
Why do I feel groggy when I wake?
Waking during deep sleep causes sleep inertia. This calculator times your alarm to light sleep.
Is it bad to use multiple alarms?
Snoozing disrupts sleep cycles. One alarm at the right time is better.