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Calcimator

Sleep Efficiency Calculator

Calculate your sleep efficiency percentage — time asleep vs time spent in bed.

Inputs

min
min
min
min

Results

Sleep Efficiency

91.7%

RatingExcellent
Actual Sleep Time7.3 hrs
Time in Bed8 hrs
Sleep Onset Latency20 min
WASO (Wake After Sleep Onset)20 min
Suggested Time in Bed480 min
How to Use This Calculator
  1. Enter the total time spent in bed in minutes.
  2. Input the time it took to fall asleep (sleep onset latency) in minutes.
  3. Add the number of times you woke up during the night and the average duration of each wake period in minutes.
  4. Optionally enter your total sleep time from a sleep tracker; leave it at 0 to have it calculated automatically from the inputs above.
  5. Review the Sleep Efficiency percentage - 85% or above is considered healthy - along with the Rating, WASO (Wake After Sleep Onset), and Suggested Time in Bed outputs.

How the result changes with Total Time in Bed

Total Time in BedSleep Efficiency
23482.9%
36989.2%
53192.5%
66694%

What each input means

Total Time in Bed
Total minutes from getting into bed to getting up
Time to Fall Asleep
Minutes from lights out to falling asleep
Times Woken Up
Number of times you woke during the night
Average Wake Duration
Average minutes awake each time
Total Sleep (if known)
From sleep tracker; leave 0 to calculate

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Total Time in Bed = 480, Time to Fall Asleep = 20, Times Woken Up = 2, Average Wake Duration = 10 = 5 input(s) provided
  2. Calculate Sleep Efficiency
    Sleep Efficiency
    91.7 = 91.7
  3. Calculate Rating
    Rating
    Excellent = Excellent
  4. Calculate Actual Sleep Time
    Actual Sleep Time
    7.3 = 7.3

Engine last updated . Checked against 3 independently-derived tests — how we verify calculators.

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