Sleep Calculator
Alarm hour
Alarm minutes
am or pm
am
pm
Minutes to fall asleep
minutes
Fifteen minutes is the usual figure for a healthy sleeper. Under five suggests you are short of sleep; over thirty is worth mentioning to a doctor.
Length of one sleep cycle
minutes
Ninety minutes is an average. Real cycles run 70 to 120 and lengthen through the night, so treat every time below as a window of about twenty minutes.
Bedtime for six full cycles
2115
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Sleep Calculator
by Rule Calculator