Calculateur de Sommeil
Time your sleep cycles so you wake up feeling refreshed.
About this tool
Sleep occurs in ~90-minute cycles. Waking between cycles (rather than mid-cycle) helps you feel more alert and rested. This calculator suggests times aligned to complete cycles. All calculations happen in your browser.
This calculator is for informational purposes only and does not constitute medical, nutritional, or professional health advice. Consult a healthcare professional before making changes to your diet or exercise routine.