🛌 Sleep Calculator

Why Use a Sleep Calculator?

Sleep works in 90-minute cycles. Waking up mid-cycle can leave you feeling tired and groggy. Our Sleep Calculator helps you choose the best times to wake up or go to bed, so you wake up refreshed.

Ideal Sleep Duration by Age

• Teenagers (14–17 years): 8–10 hrs
• Adults (18–64 years): 7–9 hrs
• Seniors (65+ years): 7–8 hrs

Tips for Better Sleep

• Stick to a regular sleep schedule.
• Avoid caffeine and screens before bed.
• Keep your bedroom cool, dark, and quiet.

Frequently Asked Questions (FAQs)

Q. How many hours should I sleep?
Most adults need 7–9 hours of quality sleep per night.

Q. Can oversleeping be harmful?
Yes, consistently sleeping over 10 hours may signal fatigue, depression, or other health issues.

Q. What is the best time to wake up?
At the end of a 90-minute cycle. The calculator shows exact times.