Sleep Calculator
Plan bedtime, wake time and sleep duration
Sleep calculator
Plan bedtime and wake time — guidelines only, not medical advice
Why trust us?
- Estimated calculations
- Formulas are publicly known
- Not medical advice
- See "How do we calculate?" section
How does the sleep calculator work?
The calculator combines age-based sleep duration guidelines with practical bedtime and wake-time planning. Choose whether you want to wake at a set time, go to bed at a set time, or check how long you will sleep for a given schedule.
Results are guidelines — individual needs vary. This tool does not replace medical advice. Save results to your profile to track trends over time.
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Frequently Asked Questions
How much sleep do I need?
It depends on age and lifestyle. The calculator shows typical ranges — use them as a starting point, not a fixed rule.