Sleep
Sleep Efficiency Score
Sleep efficiency score is the percent of bed time spent asleep. Low efficiency signals fragmentation and long awake periods in bed.
Sleep efficiency score is the percentage of time in bed actually spent asleep—total sleep time divided by time in bed. Low efficiency means long awakenings, early lying awake, or fragmented nights even when duration looks acceptable.
Fixing efficiency often means a consistent wake time, shorter bed-only-wake periods, and wind-down routines.
Common questions
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What is a good sleep efficiency percentage?
Roughly 85% or higher is a common clinical target for adults. If efficiency is low, tighten time-in-bed to actual sleep need and address stress or late screens.
Related terms
Put Sleep Efficiency Score into practice
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