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Sleep Duration Calculator

Everyday

Sleep Duration Calculator

Hours slept from bedtime and wake time.

Bed hour (0-23)

Bed minute

Wake hour

Wake minute

Hours

Minutes

How it works

Duration is wake time minus bedtime, wrapping past midnight.

Enter Bed hour (0-23), Bed minute, Wake hour, and Wake minute for the Sleep Duration Calculator; use finite values in the indicated domain. The calculator reports Hours and Minutes: Duration is wake time minus bedtime, wrapping past midnight. The calculation assumes the wake time is the next occurrence after bedtime.

\[ \Delta t = t_{wake}-t_{bed} \]

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