🌙 Sleep Calculator
Estimate bedtime or wake-up times based on sleep cycles and the time you allow yourself to fall asleep.
Suggested Bedtimes
Sleep cycles vary, so think of these as useful planning targets rather than exact biological deadlines.
BEST TARGET
—
9 hours of sleep
6 sleep cycles
—
7.5 hours of sleep
5 sleep cycles
—
6 hours of sleep
4 sleep cycles
💤 How this works:
Sleep is often described in cycles averaging about
90 minutes, although actual cycle length varies throughout
the night and from person to person. This calculator uses
90 minutes as a simple planning estimate.
This calculator is for general informational purposes and
is not medical advice. Sleep needs vary by age and individual circumstances.
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