Check Your Sleep Apnea Risk in 2 Minutes
Free online STOP‑BANG screening tool. No equipment, no registration required.
🫁 Sleep Apnea Risk Calculator
Enter your metrics and answer 4 simple questions. Your risk score updates instantly.
Threshold: >17 in (male) / >15 in (female)
Enter your information to see your sleep apnea risk score.
All calculations are performed locally in your browser. No personal health data is ever uploaded or stored.
What Is This Sleep Apnea Risk Calculator?
This is a free sleep apnea risk calculator online built on the clinically validated STOP‑BANG model — an 8‑question screening tool endorsed by the American Academy of Sleep Medicine (AASM) and widely used in primary care and preoperative settings worldwide. The STOP‑BANG sleep apnea risk test evaluates four subjective symptoms (Snoring, Tiredness, Observed apnea, blood Pressure) and four objective metrics (BMI, Age, Neck circumference, Gender) to generate a risk score between 0 and 8.
This obstructive sleep apnea risk assessment quiz is designed for adults who snore regularly, experience daytime fatigue, or have other known OSA risk factors. It provides a fast, private, at‑home screening — without any equipment, registration, or data upload. All calculations run locally in your browser, and your health information is never stored on our servers.
STOP‑BANG Score Distribution by OSA Severity
Higher scores correlate with increased likelihood of moderate‑to‑severe OSA. (Adapted from Chung et al., 2008)
Why Screen for Sleep Apnea?
Undiagnosed obstructive sleep apnea (OSA) affects an estimated 25 million adults in the United States, yet up to 80% of moderate‑to‑severe cases remain undiagnosed. Left untreated, OSA is associated with serious health consequences including hypertension, heart disease, stroke, type 2 diabetes, and daytime cognitive impairment. Early identification through a validated free sleep apnea risk calculator online can prompt timely evaluation and treatment, potentially reducing long‑term health risks.
Common warning signs include loud, persistent snoring; witnessed breathing pauses during sleep; excessive daytime sleepiness; morning headaches; and difficulty concentrating. If you recognize these symptoms, taking a STOP‑BANG sleep apnea risk test is a quick, evidence‑based first step toward understanding your risk.
Common OSA Risk Factors
Prevalence of key risk factors among adults diagnosed with moderate‑to‑severe OSA.
Understanding Your Results
Your STOP‑BANG score places you into one of three risk tiers. Here's what each level means:
Your responses suggest a lower probability of moderate‑to‑severe OSA. However, if you continue to experience symptoms such as snoring or daytime fatigue, discuss them with your primary care provider.
Your screening indicates an intermediate probability of OSA. A sleep specialist evaluation is recommended to determine whether a diagnostic sleep study (polysomnography or home sleep apnea test) is appropriate.
Your screening result indicates elevated OSA risk. We recommend you consult a sleep specialist to arrange a polysomnography (PSG) test for formal diagnosis. Early treatment can significantly improve sleep quality and reduce associated health risks.
Risk Factor Education
OSA risk factors fall into two categories. Non‑modifiable factors include age (risk increases after 50), male gender, and family history. Modifiable factors include excess body weight (the strongest reversible risk factor), neck circumference (fatty tissue around the airway), alcohol consumption (relaxes throat muscles), smoking (airway inflammation), and sleeping position (back sleeping worsens airway collapse).
While this calculator helps identify risk, general lifestyle changes — such as maintaining a healthy weight, limiting evening alcohol, and avoiding sedatives before bed — may support better sleep health. However, these are not substitutes for professional medical evaluation when OSA is suspected.
Impact of Weight Reduction on AHI
Even modest weight loss can meaningfully reduce apnea‑hypopnea index (AHI) in overweight individuals. (Adapted from Peppard et al., 2000)
Frequently Asked Questions
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Nap Calculator
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Caffeine & Sleep
When to stop drinking coffee.
Sleep Debt
Quantify lost sleep.
Snore Impact Radius
How far your snoring travels.
Insomnia Severity
Validated ISI assessment.
AHI Calculator
Understand sleep study results.
CPAP Tips
Sleep comfortably with therapy.
Sleep Efficiency
Quality score.
Pregnancy Sleep
Safe positions by trimester.
Shift Work Sleep
Optimize night shifts.
Melatonin Timing
Optimal dose and time.
🫁 Based on the STOP‑BANG screening model (Chung et al., 2008) and AASM clinical guidelines. 📅 Last updated:
Last review:
This tool is for preliminary screening only. It does not constitute medical advice, diagnosis, or treatment. Always consult a board‑certified sleep medicine physician for formal evaluation and diagnosis.