Sleep Efficiency Calculator

❓ What is Sleep Efficiency?

Sleep efficiency is a measure of how well you sleep, calculated by dividing your actual sleep time by the total time spent in bed, then multiplying by 100. It's one of the most important metrics used by sleep specialists to assess sleep quality. A higher percentage means you're spending more of your time in bed actually sleeping, rather than lying awake.

You might spend 8 hours in bed but only sleep for 6 hours. Sleep efficiency reveals this difference. Medical research shows that 90%+ efficiency is excellent, while anything below 75% may indicate insomnia or other sleep disorders. Improving your sleep efficiency is often more important than just increasing time in bed.