😴 Sleep Calculator
Find the best times to sleep and wake up based on 90‑minute sleep cycles. Wake up refreshed and improve your rest.
😴 Sleep Calculator
How does it work?
Humans sleep in cycles of roughly 90 minutes. Waking up at the end of a cycle helps you feel rested. This calculator suggests optimal bedtimes and wake-up times based on these cycles.
Tips for better sleep
- Aim for 4–6 full sleep cycles (6–9 hours).
- Keep a consistent sleep schedule.
- Avoid caffeine and screens before bedtime.