Tips
How to use Sleep Cycle Calculator
- A 90-minute cycle is a simplified average and individual sleep patterns vary.
- Discuss persistent sleep problems, loud snoring, or breathing pauses with a healthcare professional.
Everyday tool
Sleep Cycle Calculator
Enter a desired wake time or planned bedtime and time to fall asleep to see options for four, five, or six simplified sleep cycles.
Sleep cycle calculatorEstimate bedtimes or wake times using 90-minute sleep-cycle intervals.
Reference onlyA 90-minute cycle is a simplified average. Individual sleep patterns vary.
Try going to bed at
6 cycles21:469h
5 cycles23:167h 30mRecommended range
4 cycles00:466h
This tool does not diagnose sleep disorders. Persistent insomnia, severe daytime sleepiness, loud snoring, or breathing pauses should be discussed with a healthcare professional.
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