Stress Level Calculator

Perceived Stress Scale (PSS-10)

Answer 10 questions about the past month to get a stress score from 0–40. Developed by Sheldon Cohen (1983), the PSS-10 is the most widely validated self-report measure of perceived stress.

For each question, choose how often you felt or thought a certain way in the last month.

1. How often have you been upset because of something that happened unexpectedly?

2. How often have you felt unable to control the important things in your life?

3. How often have you felt nervous and stressed?

4. How often have you felt confident about your ability to handle your personal problems?

This question is positively worded — confident answers lower your score.

5. How often have you felt that things were going your way?

This question is positively worded — more often lowers your score.

6. How often have you found that you could not cope with all the things you had to do?

7. How often have you been able to control irritations in your life?

This question is positively worded — being able to control irritations lowers your score.

8. How often have you felt that you were on top of things?

This question is positively worded — feeling on top of things lowers your score.

9. How often have you been angered because of things that were outside of your control?

10. How often have you felt difficulties were piling up so high that you could not overcome them?

How this is calculated

This is a standard implementation of the Perceived Stress Scale (PSS-10). Ten questions about the past month are each answered 0 (never) to 4 (very often). The four positively-worded items — 4, 5, 7 and 8 — are reverse-scored (4 minus your answer) and the ten values are summed for a total of 0–40. No weighting or adjustment is added on top of the published instrument.

Worked example

Someone answers 'fairly often' (3) to all six negatively worded items — that is 18 — and 'sometimes' (2) to the four positive items. Those four are reverse-scored, so each contributes 4 − 2 = 2, adding 8. Total: 26, the top of the moderate band. Now suppose they answer 'very often' (4) to the positive items instead: those contribute 4 − 4 = 0 each, and the total falls to 18. Same distress on the negative items, very different score — which is exactly what the reverse-scored items are there to capture.

Limitations

The PSS-10 measures how unpredictable, uncontrollable and overloaded your life has felt — that is, perceived stress. It is a screening and research instrument, not a diagnostic one, and it cannot identify anxiety, depression or burnout. Note also that this is not the Holmes–Rahe Social Readjustment Rating Scale, a different and frequently confused instrument that scores recent life events rather than perception.

Sources

Cohen S, Kamarck T, Mermelstein R. A global measure of perceived stress. Journal of Health and Social Behavior. 1983;24(4):385–396. View source (opens in a new tab) The original Perceived Stress Scale, introduced as a 14-item instrument.
Cohen S, Williamson G. Perceived stress in a probability sample of the United States. In: Spacapan S, Oskamp S, eds. The Social Psychology of Health. Newbury Park, CA: Sage; 1988. The 10-item short form implemented here, derived by factor analysis from 2,387 US respondents. Book chapter — no open-access version, so no link.

Written and maintained by Navaraj Thapa, a software engineer — not a medical professional. This tool has not been clinically reviewed and is not medical advice. The research its thresholds are drawn from is cited below. Method and sources last reviewed 7 Aug 2026.

Frequently asked questions

What is the PSS-10 and how is this score calculated?

The Perceived Stress Scale (PSS-10) was developed by Sheldon Cohen and colleagues in 1983. It contains 10 questions about feelings and thoughts over the past month, each scored 0 (Never) to 4 (Very Often). Six items are scored directly; four positively-worded items (feeling confident, things going your way, controlling irritations, being on top of things) are reverse-scored so that higher answers lower your total. Scores range from 0 to 40.

What is a normal PSS-10 score?

Population studies report mean scores of 12–14 for community adults. Scores of 0–13 indicate low perceived stress, 14–26 indicate moderate stress, and 27–40 indicate high perceived stress. Scores above 20 have been associated with significantly elevated cortisol levels and increased susceptibility to illness in prospective studies.

Is this a clinical diagnosis?

No. The PSS-10 is a screening and research tool, not a clinical diagnostic instrument. It cannot diagnose anxiety disorders, depression, burnout, or any other condition. A high score means you are perceiving your life as stressful — a valid and important signal — but a mental health professional is needed to assess whether clinical intervention is warranted.

Can my score improve and how quickly?

PSS scores are responsive to intervention. Randomised controlled trials show that 8 weeks of Mindfulness-Based Stress Reduction (MBSR), regular aerobic exercise (3×/week), or cognitive-behavioural techniques each produce clinically meaningful reductions of 4–8 points on average. Even improving sleep consistency by 30–45 minutes can lower PSS scores within 2–4 weeks in people who are sleep-restricted.

Put it all together

The Health Planner reads your data and gives you exactly 3 actions for today.

Get my daily plan →