Sleep Cycle Calculator
Live wake-up windows from your current bedtime.
See how it works
Watch a quick simulation of this tool in action — no file needed.
How to use Sleep Cycle Calculator
Follow these steps — everything happens instantly in your browser.
- 1
Step 1. Bedtime is captured automatically from your device clock.
- 2
Step 2. Read four wake-up options spanning 3–6 cycles.
- 3
Step 3. Use the highlighted 'optimal' (6 cycles) for best recovery.
Why use this tool
Frequently asked questions
Everything you might want to know about sleep cycle calculator.
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