PSS-10 — Perceived Stress Scale (Cohen 1983) test online

PSS-10 — Perceived Stress Scale

Validated 10-item PSS-10 stress test by Cohen, Kamarck & Mermelstein. Covers the past month, scored 0–40 as low, moderate or high perceived stress.

Last updated: 4/30/2026 Sources verified: 4/30/2026

This calculator requires JavaScript to compute results. The methodology and formulas are documented below — you can compute manually using the inputs and equations.

What PSS-10 measures

The Perceived Stress Scale is a 10-item self-report measure of the degree to which situations in your life are appraised as stressful. It deliberately measures experience, not objective stressor load — two people in the same demanding job can score very differently based on coping resources, support, and meaning attached to demands.

PSS-10 is one of the most-validated stress instruments worldwide, with translations and norms in 30+ languages. Original by Cohen, Kamarck and Mermelstein (1983); 10-item version normed by Cohen and Williamson (1988); Polish validation by Juczyński and Ogińska-Bulik (2009).

Scoring

Each item rated 0–4 (Never → Very often) for the past month. Items 4, 5, 7, 8 are reverse-scored (they ask about positive coping experiences). Total range: 0–40.

Score	Band
0–13	Low perceived stress
14–26	Moderate perceived stress
27–40	High perceived stress

How to use PSS-10 well

PSS-10 is most useful as a 4–8 week tracking tool during deliberate change phases — after starting therapy, after a major life transition, or while implementing stress-buffer changes (sleep schedule, exercise, social contact). Daily retesting gives noisy data; the questions ask about a one-month window.

Privacy

All calculations run in your browser. We never see, log, or store your individual answers. Only an anonymous event is sent to a privacy-respecting analytics service.

Licence

PSS-10 is in the public domain for non-commercial research and educational use under the original terms set by Cohen and the Mind Garden waiver. Source: J Health Soc Behav 1983;24:385-396.

Frequently asked questions

What does PSS-10 measure?

PSS-10 measures the degree to which situations in your life are *appraised* as stressful — not the objective load. It captures three things: feeling unable to control important things, feeling overwhelmed by demands, and feeling that things are not going your way. The 10-item version is the most-used; original from Cohen 1983, normative data from Cohen & Williamson 1988.

How is PSS-10 scored?

Each item is rated 0–4 (Never → Very often) for the past month. Items 1, 2, 3, 6, 9, 10 are scored forward; items 4, 5, 7, 8 are reverse-scored (because they ask about positive coping experiences). Total range 0–40. Bands: 0–13 low, 14–26 moderate, 27–40 high (US norms, Cohen & Williamson 1988). The calculator handles reverse-scoring automatically.

Is a high PSS-10 the same as a stress disorder?

No. PSS-10 measures perceived stress as a continuous experience, not a clinical diagnosis. High scores are a marker of risk and a useful trigger for clinical conversation, but disorders like adjustment disorder, acute stress disorder, or PTSD have specific diagnostic criteria that require clinical interview. PSS-10 frequently co-occurs with depression and anxiety; PHQ-9 and GAD-7 help disentangle.

How often should I retake PSS-10?

It is most useful as a 4–8 week tracking tool during a deliberate change phase (new role, life transition, after starting therapy or making lifestyle changes). Daily or weekly retesting is too frequent — the questions ask about a 1-month window, so retesting in less than 2 weeks gives noisy data.

Does my data leave the device?

No. All calculations run entirely in your browser. Only an anonymous event (locale, severity band) is sent to a privacy-respecting analytics service. Your individual answers never leave the device.

Sources

A global measure of perceived stress — J Health Soc Behav (Cohen, Kamarck, Mermelstein, 1983) (peer reviewed, retrieved 2026-04-30)
Perceived stress in a probability sample of the United States — Cohen & Williamson (1988) — original 10-item normative data (peer reviewed, retrieved 2026-04-30)
The Polish adaptation of the Perceived Stress Scale (PSS-10) — Juczyński & Ogińska-Bulik (2009) — Polish validation (peer reviewed, retrieved 2026-04-30)