Sleep Calculator
Find the perfect time to wake up or go to bed.
Your results will appear here
Select a calculation to begin.
Understanding Your Sleep Cycles
Waking up in the middle of a sleep cycle can leave you feeling groggy and tired. This calculator helps you schedule your sleep around natural 90-minute cycles, so you can wake up feeling refreshed and ready for the day.
How to Use the Sleep Calculator
Choose Calculation
Decide if you want to find wake-up times or bedtimes.
Click the Button
The tool uses the current time to calculate.
See Your Times
Get a list of optimal times based on 1-6 sleep cycles.
Set Your Alarm
Choose a time and set your alarm to wake up refreshed.
Common Use Cases for a Sleep Calculator
Calculate the best time to wake up to feel refreshed and avoid grogginess.
Determine the ideal time to go to bed to get a specific number of sleep cycles.
Set your alarm clock to align with the end of a natural sleep cycle.
Optimize your sleep schedule to enhance mental clarity and performance during the day.