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Categories: Assessment , Health & Fitness , Psychology
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The Depression Anxiety Stress Scale 21 (DASS-21) screens three core aspects of emotional wellbeing over the previous week. Each facet—depression, anxiety, and stress—is represented by seven behaviour-centred statements answered on a four-point frequency scale.

This online questionnaire guides you through all 21 items, instantly totals each sub-scale, doubles raw scores for compatibility with the original 42-item norms, and labels results with internationally recognised severity bands. A responsive summary chart appears once every question is answered.

Complete the check-in during quiet moments to gain a snapshot of current mood patterns; *scores fluctuate with circumstances, so repeat assessments after major life changes for context.* **Results do not constitute a clinical diagnosis. Seek professional advice if concerned.**

Technical Details:

Each answer is stored in browser memory, mapped to its construct, and recalculated whenever you select a new option.

Score computation workflow

  • Capture radio input as 0-3 integers
  • Group values by construct key
  • Sum raw totals for each construct
  • Multiply raw totals by 2
  • Compare to severity thresholds
ConstructThresholds (Normal→Extremely Severe)
Depression0-9, 10-13, 14-20, 21-27, 28-42
Anxiety0-7, 8-9, 10-14, 15-19, 20-42
Stress0-14, 15-18, 19-25, 26-33, 34-42

All calculations run client-side; no answers leave your device, ensuring instant performance and privacy.

Calculations & Scoring:

Each sub-scale follows the same three-step procedure shown below.

Depression

Raw total doubled to match full-scale norms.

Σresponses=12
Draw=12
Add the selected values for all depression-tagged items.

12×2
24
Doubling normalises scores against the 42-item benchmark.

24
→Moderate
Compare the doubled score with table limits to label severity.

A doubled score of 24 falls in the Moderate range.

Anxiety

Raw total doubled for scale consistency.

Σresponses=8
Gather values for anxiety-tagged statements.

8×2=16
Doubling standardises results.

16
→Moderate
Map to the anxiety threshold table.

A doubled score of 16 is classed as Moderate.

Stress

Raw total doubled before classification.

Σresponses=10
Collate scores for stress-tagged items.

10×2=20
Doubling aligns with the original norms.

20
→Moderate
Use the stress threshold table for classification.

A doubled score of 20 sits in the Moderate band.

Step-by-Step Guide:

Follow these steps to complete the survey and view your results.

  1. Press the Begin Assessment button.
  2. Select the first statement’s answer using the radio choices labelled 0-3.
  3. Watch the progress bar fill as you proceed through each item.
  4. Use the list on the right to revisit any unanswered question.
  5. After the final answer, review the score badges and stacked chart.
  6. Scroll down to read personalised guidance beneath the results.

FAQ:

Common questions about using and interpreting this tool.

Is my data stored?

No. All answers remain in your browser memory and disappear when the tab closes.

Who created the DASS-21?

The questionnaire was developed by Australian researchers to measure emotional states in adults.

How often should I retake it?

Many users retest weekly or after significant life events to observe trends rather than single points.

What if my score is high?

Consider discussing results with a qualified mental-health professional for tailored advice.

Can scores be compared with friends?

Scores are personal snapshots; comparisons may mislead because stressors and coping resources differ.

Troubleshooting:

Resolve common problems quickly.

  • Page shows blank chart — ensure all 21 items are answered.
  • Progress bar stuck — refresh and restart; answers reload from the link if bookmarked.
  • Accidentally clicked the wrong choice — select the correct option; scores update instantly.
  • Browser zoom hides buttons — reset zoom to 100 % for full layout visibility.
  • Mobile scroll jumps — lift finger briefly to allow the question list to re-centre.

Advanced Tips:

Enhance tracking and insight.

  • Bookmark the results URL to revisit or share with a therapist.
  • Record weekly scores in a spreadsheet to visualise long-term trends.
  • Combine scores with sleep or exercise logs for richer context.
  • Use a stylus on tablets for faster selection.
  • Print the answers table for offline discussion.

Glossary:

Key terms used throughout the tool.

DASS-21
Short form of the Depression Anxiety Stress Scale.
Raw score
Sum of selected item values before doubling.
Severity band
Category describing how elevated the score is.
Sub-scale
One of the three measured constructs.
Norms
Reference scores from large population samples.

This assessment runs entirely on your device; no personal information is transmitted or stored.

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