Sleep Calculator
Determine the best time to sleep or wake up based on natural 90-minute sleep cycles to feel refreshed and energized.
Plan Your Sleep
Enter your desired wake-up time to find the best bedtimes.
Go to Bed At...
To wake up feeling refreshed, you should go to sleep at one of the following times:
Enter a wake-up time.
(Recommended for 8+ hrs sleep)(For less sleep)
About Our Sleep Calculator
The Calclytix Sleep Calculator is a comprehensive tool designed to help you determine the perfect bedtime, optimum wake-up time, and ideal number of sleep cycles using science-backed sleep principles. Built around the 90-minute sleep cycle model, it calculates the best times to sleep and wake up for feeling refreshed, energized, and mentally clear.
Simply enter your desired wake-up time, and the calculator will provide several optimal bedtimes. Each suggestion is calculated by counting back in 90-minute intervals, ensuring you wake up at the end of a sleep cycle, which helps prevent grogginess.
Frequently Asked Questions