Find ideal bedtimes or wake times based on 90-minute sleep cycles.
For informational purposes only. This tool does not constitute medical advice. Consult a healthcare professional before making health decisions.
Choose a time to see recommended sleep or wake times.
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Explore guide →Most sleep cycles last about 90 minutes. Waking up between cycles can help you feel more rested. This calculator suggests bedtimes or wake times based on common cycle lengths.
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