Calculators

Common tools

Selected calculator

Sleep Architecture

Total sleep time, NREM time and each sleep stage as a percentage of TST.

N1(minutes)Required — enter a known zero explicitly where applicable.

N2(minutes)Required — enter a known zero explicitly where applicable.

N3(minutes)Required — enter a known zero explicitly where applicable.

REM(minutes)Required — enter a known zero explicitly where applicable.

Result

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

TST = N1 + N2 + N3 + REM minutes; NREM = N1 + N2 + N3

Each stage percentage = stage minutes / TST 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.