Plan an Early Morning Wake-Up

Catching an early flight or meeting? Find the bedtime that minimizes grogginess.

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Wake-up time

Go to bed at

9:45 PM

9 hrs

6 cycles · ideal

Go to bed at

11:15 PM

7.5 hrs

5 cycles · ideal

Go to bed at

12:45 AM

6 hrs

4 cycles

Go to bed at

2:15 AM

4.5 hrs

3 cycles

💡 Sleep happens in ~90-minute cycles. Waking at the end of a cycle (rather than mid-cycle) helps you feel refreshed instead of groggy. Most adults do best with 5–6 cycles (7.5–9 hours), plus ~15 minutes to drift off.

Early Wake tips

⏰

For a 5am wake-up, the calculator shows which bedtimes give whole cycles instead of a jarring mid-cycle alarm.

💡

If you can't get 6 cycles, a clean 4-5 cycles often beats a longer sleep that ends mid-cycle.

🎯

Avoid caffeine 6+ hours before your planned bedtime so you actually fall asleep on schedule.

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🧸

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Work back from the school alarm to a consistent, c

Cwestiynau Cyffredin

Back to Sleep Cycle Calculator