Epworth Sleepiness Scale (ESS 0–24) & STOP-Bang Sleep Apnea Risk Calculator

Evaluate daytime sleepiness (ESS 0–24; >10 excessive) and STOP-Bang OSA risk (0–8).

Epworth Sleepiness Scale (ESS)
12 points (0–24)
STOP-Bang Sleep Apnea Score 4 pts (0–8)
Mean Situation Dozing Score (0–3) 1.5 pts/item
Points Above ESS Normal Cutoff (10) 2 pts
Inputs
⚡ Scenarios:
pts (0–12)
Sum of 4 passive items (reading, TV, sitting in public, passenger in car; 0–3 each, max 12).
pts (0–12)
Sum of 4 active/social items (lying down PM, talking, quiet after lunch, car in traffic; max 12).
pts (0–8)
Number of "Yes" items on the 8-item STOP-Bang questionnaire (0 to 8).
Results & Graph
Epworth Sleepiness Scale (ESS)
12 points (0–24)
STOP-Bang Sleep Apnea Score
4 pts (0–8)
Mean Situation Dozing Score (0–3)
1.5 pts/item
Points Above ESS Normal Cutoff (10)
2 pts

Epworth Sleepiness Scale (ESS)

Graph 1 • Epworth Sleepiness (ESS) • Domain Architecture & Live Telemetry Maps Passive Situations Score0to12, Active Situations Score0to12, Stop Bang Yes Count0to8 through Epworth Sleepiness (ESS) Formula.
Epworth Sleepiness (ESS) • Clinical & Physiological Reference Scale Low / Baseline Target / Reference Elevated / Watch High / Action Epworth Sleepiness Scale (ESS): 12 points (0–24) STOP-Bang Sleep Apnea Scor 4 pts (0–8) Mean Situation Dozing Scor 1.5 pts/item Points Above ESS Normal Cu 2 pts
Graph 2 • Epworth Sleepiness Scale (ESS) Across Passive Situations Score0to12 Sweep (40% → 160%) Evaluates ESS_Total = Sum of 8 situation ratings (0–3 each); STOP-Bang = Snoring across 7 operating points (current input highlighted).
0 points 8.91 points 17.82 points 7.80 2.80 9.20 4.20 10.60 5.60 12 7 13.40 8.40 14.80 9.80 16.20 11.20
Graph 3 • Joint Sensitivity: Passive Situations Score0to12 × Active Situations Score0to12 Compares Epworth Sleepiness Scale (ESS) when Active Situations Score0to12 is shifted +25% (solid) vs. −25% (dashed).
0 points 8.44 points 16.89 points --- Active Situations Score0to12 @ 75% 11.15 -30% 12.20 -15% 13.25 +0% 14.30 +15% 15.35 +30%
Summary: Epworth Sleepiness Score is 12/24 (Mild-Moderate Excessive Sleepiness (11–15)) and STOP-Bang OSA risk score is 4/8 (Intermediate OSA Risk).
Summary: Epworth Sleepiness Score is 12/24 (Mild-Moderate Excessive Sleepiness (11–15)) and STOP-Bang OSA risk score is 4/8 (Intermediate OSA Risk).
⚡ Send result to: BMI →Calorie & TDEE →Pace, 1RM & HR Zones →
Interactive chart & math engine powered by CalculatorGraph

Formula & Mathematical Methodology: Epworth Sleepiness (ESS) Formula

ESSTotal = Sum of 8 situation ratings (0–3 each)
STOP-Bang = Snoring + Tired + Observed + Pressure + BMI>35 + Age>50 + Neck>40cm + Male
ESS_Total = Sum of 8 situation ratings (0–3 each); STOP-Bang = Snoring + Tired + Observed + Pressure + BMI>35 + Age>50 + Neck>40cm + Male
  • passiveSituationsScore0to12: Passive Situations Score0to12 (pts (0–12))
  • activeSituationsScore0to12: Active Situations Score0to12 (pts (0–12))
  • stopBangYesCount0to8: Stop Bang Yes Count0to8 (pts (0–8))

Rounding: Clinical scores round to statutory integer or decimal precision; physiological metrics round to 2 decimal places.

Worked Example: Clinical / Physiology Scenario: Epworth Sleepiness (ESS)

Evaluate daytime sleepiness (ESS 0–24; >10 excessive) and STOP-Bang OSA risk (0–8).

  1. Enter lab values, anthropometric measurements, or performance test metrics.
  2. Evaluate the reference equation: ESS_Total = Sum of 8 situation ratings (0–3 each); STOP-Bang = Snoring + Tired + Observed + Pressure + BMI>35 + Age>50 + Neck>40cm + Male.
  3. Inspect the primary classification, supporting indices, and 3 SVG charts.
Result: Computes Epworth Sleepiness (ESS) via ESS_Total = Sum of 8 situation ratings (0–3 each); STOP-Bang = Snoring + Tired + Observed + Pressure + BMI>35 + Age>50 + Neck>40cm + Male.

Frequently Asked Questions

How does the Epworth Sleepiness Scale (ESS 0–24) & STOP-Bang Sleep Apnea Risk Calculator compute its result?

It evaluates ESS_Total = Sum of 8 situation ratings (0–3 each); STOP-Bang = Snoring + Tired + Observed + Pressure + BMI>35 + Age>50 + Neck>40cm + Male directly in your browser and updates three custom SVG visualizations in real time.

Can I use Goal Seek to solve backwards for a target lab value or pace?

Yes. Click "🎯 Goal Seek" in the results toolbar to solve backwards for any numeric input parameter.

Are my health and biometric inputs kept private?

Yes. All calculations run 100% locally on your device with zero external transmission.

Health & Fitness · Sleep, Vision & Audiology

Epworth Sleepiness Scale (ESS 0–24) & STOP-Bang Sleep Apnea Risk Calculator: inputs, method, and how to read the result

Evaluate daytime sleepiness (ESS 0–24; >10 excessive) and STOP-Bang OSA risk (0–8).

Choose inputs for the case you are checking

The defaults are illustrative. Replace them with values for your case and keep the units shown beside each field.

  • Passive Situations Score0to12: Sum of 4 passive items (reading, TV, sitting in public, passenger in car; 0–3 each, max 12).
  • Active Situations Score0to12: Sum of 4 active/social items (lying down PM, talking, quiet after lunch, car in traffic; max 12).
  • Stop Bang Yes Count0to8: Number of "Yes" items on the 8-item STOP-Bang questionnaire (0 to 8).

What the calculation includes

With the default values shown, Epworth Sleepiness Scale (ESS) is 12 points (0–24). The calculation follows Epworth Sleepiness (ESS) Formula; the formula and variable definitions above show how the inputs combine.

One-input check: With the other defaults held constant, changing Passive Situations Score0to12 from 7 pts (0–12) to 8 pts (0–12) changes Epworth Sleepiness Scale (ESS) from 12 points (0–24) to 13 points (0–24). This is a comparison inside the calculator's stated model, not a prediction.

Where to use caution

  • Uses peer-reviewed clinical and sports physiology formulas.
  • For educational and informational reference only; clinical scores do not replace physician judgment or laboratory reference ranges.

Scope: Global Clinical & Sports Science Consensus Check the assumptions and limitations against your situation before relying on the estimate.

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