Find your perfect bedtime free
Find ideal bedtimes using 90-minute sleep cycles to wake up refreshed.
Free - Free web tool — use instantly without signup.
About Find your perfect bedtime free
A simple web tool that calculates the best times to go to sleep based on 90-minute sleep cycles. Enter your desired wake time and the calculator works backward (including a 14-minute average fall-asleep buffer) to suggest bedtimes that complete 4, 5, or 6 full cycles. Includes age-based recommended sleep durations and a plain-language explanation of sleep cycles and why waking at a cycle end helps you feel more alert. Free and no signup required.
Key Features
- Calculates ideal bedtimes by working backward from wake time
- Uses 90-minute sleep cycles plus a 14-minute fall-asleep buffer
- Provides suggestions for completing 4, 5, or 6 full cycles
- Includes age-based recommended sleep durations
- Explains sleep cycle stages and why timing affects how refreshed you feel
Who is this for?
Anyone who wants to optimize sleep timing—adults, students, shift workers, and parents.
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