Sleep Calculator to be used with the Sleep Diary.

Representative Night

Calculating Total Sleep Time and Sleep Efficiency

1. I went to bed at:

(clock time) (e.g. 11:15 PM)
2. I turned out the lights after:

3. I fell asleep in:

4. I woke up times during the night.
5. The total duration of these awakenings was:

6. After awakening for the last time I was in bed for:

7. I got up at:

(clock time)


Total Time in Bed
Time between your bedtime (#1) and rise time (#7)

Convert hours to minutes by multiplying by 60

Total Time Awake
Add the numbers above in this column (minutes)
Total Sleep Time
A minus B (minutes)
Sleep Efficiency
C/A x 100%

My sleep efficiency is

† For example, if you were in bed for 8 hours and 20 minutes, this is the same as 8 x 60 + 20 minutes = 500 minutes.