sleeptimes

Plan your sleep schedule with our easy-to-use calculator. Find ideal bedtimes and wake-up times based on 90-minute sleep cycles. Simple, free, and no account required!

Please note: This app provides general sleep timing suggestions based on common sleep cycle concepts. It is not medical advice. Consult a healthcare professional for sleep concerns.

Sleep Calculator helps you plan sleep schedules based on the 90-minute sleep cycle concept. This approach suggests that sleeping in complete cycles may help you wake up feeling more refreshed.

HOW IT WORKS:

• Enter your desired wake-up time to get suggested bedtimes
• Enter your planned bedtime to get suggested wake-up times
• Each suggestion shows estimated sleep cycles (5-6 cycles is about 7.5-9 hours)
• Visual indicators highlight suggested time ranges

ABOUT SLEEP CYCLES: Many people find that waking up at the end of a sleep cycle (about every 90 minutes) feels more natural than waking up mid-cycle. This app helps you explore this concept for your own sleep planning.

WHO MIGHT FIND THIS HELPFUL:

• People with varying work schedules
• Students managing study and sleep
• Parents coordinating family routines
• Anyone interested in exploring sleep timing

FEATURES:

• Two calculation modes (bedtime or wake-up time)
• Visual sleep cycle indicators
• Simple, clean interface
• Works offline
• Dark mode support
• No account required

NO SUBSCRIPTIONS - NO ADS - NO DATA TRACKING

Download and explore sleep timing that works for you!

Important: This app provides general sleep timing suggestions based on commonly discussed sleep cycle concepts. Individual sleep needs vary. This is not medical advice, diagnosis, or treatment. Consult a healthcare professional for persistent sleep concerns.