Perceived Stress Scale (PSS-10) Calculator

Enter Calculation

In the last month, how often have you felt or thought a certain way? Answer each item: 0 = Never, 1 = Almost Never, 2 = Sometimes, 3 = Fairly Often, 4 = Very Often.

1. Been upset because of something that happened unexpectedly? 0 - Never 1 - Almost Never 2 - Sometimes 3 - Fairly Often 4 - Very Often

2. Felt unable to control the important things in your life? 0 - Never 1 - Almost Never 2 - Sometimes 3 - Fairly Often 4 - Very Often

3. Felt nervous and stressed? 0 - Never 1 - Almost Never 2 - Sometimes 3 - Fairly Often 4 - Very Often

4. Felt confident about your ability to handle personal problems? (reverse-scored) 0 - Never 1 - Almost Never 2 - Sometimes 3 - Fairly Often 4 - Very Often

5. Felt that things were going your way? (reverse-scored) 0 - Never 1 - Almost Never 2 - Sometimes 3 - Fairly Often 4 - Very Often

6. Found that you could not cope with all the things you had to do? 0 - Never 1 - Almost Never 2 - Sometimes 3 - Fairly Often 4 - Very Often

7. Been able to control irritations in your life? (reverse-scored) 0 - Never 1 - Almost Never 2 - Sometimes 3 - Fairly Often 4 - Very Often

8. Felt that you were on top of things? (reverse-scored) 0 - Never 1 - Almost Never 2 - Sometimes 3 - Fairly Often 4 - Very Often

9. Been angered because of things outside of your control? 0 - Never 1 - Almost Never 2 - Sometimes 3 - Fairly Often 4 - Very Often

10. Felt difficulties were piling up so high you could not overcome them? 0 - Never 1 - Almost Never 2 - Sometimes 3 - Fairly Often 4 - Very Often

Results

Perceived Stress Scale (PSS-10) Score

20

out of 40 — Moderate perceived stress

Score range	Interpretation
0 – 13	Low perceived stress
14 – 26	Moderate perceived stress
27 – 40	High perceived stress
Items 4, 5, 7, 8	Reverse-scored (4 − response)

What is the Perceived Stress Scale (PSS-10)?

The Perceived Stress Scale (PSS-10) is one of the most widely used psychological instruments for measuring how unpredictable, uncontrollable, and overloaded people find their lives. Developed by Sheldon Cohen and colleagues, it asks about your feelings and thoughts over the last month. It is a self-assessment tool used in research and education — it is not a clinical diagnosis. This calculator works for anyone, anywhere; the scoring is universal and not tied to any country.

How to use this calculator

Answer all 10 questions based on how often you felt each way during the past month, using the 0-4 scale (0 = Never, 1 = Almost Never, 2 = Sometimes, 3 = Fairly Often, 4 = Very Often). The calculator adds your answers and automatically reverse-scores the four positively worded items (questions 4, 5, 7, and 8). Your total ranges from 0 to 40, and you receive an instant stress category.

The formula explained

Six items (1, 2, 3, 6, 9, 10) are scored directly. The four positive items (4, 5, 7, 8) are reverse-scored — a response of x becomes \(4 - x\) — because agreeing with them indicates less stress. The sum is interpreted as: 0-13 = low, 14-26 = moderate, and 27-40 = high perceived stress.

$$\begin{gathered} \text{PSS} = \text{Q1} + \text{Q2} + \text{Q3} + \text{Q6} + \text{Q9} + \text{Q10} \\[0.6em] + \left(4 - \text{Q4}\right) + \left(4 - \text{Q5}\right) + \left(4 - \text{Q7}\right) + \left(4 - \text{Q8}\right) \end{gathered}$$

Items 4, 5, 7, 8 are reverse-scored as (4 minus the response) before summing all ten items.

Worked example

Suppose every answer is "2" (Sometimes). The six direct items contribute 2 each (\(6 \times 2 = 12\)). The four reverse items each become \(4 - 2 = 2\), contributing another 8. Total \(= 12 + 8 = 20\), which falls in the moderate range.

Total PSS-10 scores from 0 to 40 fall into low (0-13), moderate (14-26), and high (27-40) stress bands.

FAQ

Is a high score bad? A higher score means you perceive more stress, but PSS is a snapshot of the past month, not a diagnosis. Persistent high scores may be worth discussing with a professional.

Why are some questions reversed? Items like "felt confident about your ability to handle problems" measure coping. Higher agreement means lower stress, so they are flipped to keep the scale pointing in one direction.

What's the difference between PSS-10 and PSS-14? The PSS-14 is the original 14-item version; the PSS-10 is a refined, shorter form with better psychometric properties and is now the most commonly recommended version.