Calculators

Common tools

Selected calculator

Sleep Efficiency

Sleep time as a percentage of the defined PSG lights-out to lights-on sleep opportunity.

Total sleep time(minutes)Required — enter a known zero explicitly where applicable.

Lights-out to lights-on analysis interval(minutes)Required — enter a known zero explicitly where applicable.

Result

Complete or correct the marked inputs to calculate. Blank values are not zero.

Sleep Efficiency = TST minutes / lights-out analysis interval minutes × 100

Full precision is used internally. Only displayed results are rounded, normally to one decimal place.

For training use. Follow your lab’s scoring rules and physician interpretation. Calculations use already-scored measurements, stay on this device, and do not diagnose or recommend treatment. Do not enter patient identifiers.