DASS-21 scoring
Use the Depression Anxiety Stress Scales-21 (DASS-21) to support your clinical assessment. Enter the client’s responses below to calculate the depression, anxiety and stress scores and review the severity rating for each. This tool is for clinicians and supports, rather than replaces, a clinical interview.
Please read each statement and circle a number 0, 1, 2 or 3 which indicates how much the statement applied to you over the past week. There are no right or wrong answers. Do not spend too much time on any statement.
Answered 0 of 21
Answer every scored item to see the result and copy it.
Answers stay in this browser. Nothing is saved or sent.
How to score the DASS-21
- Ask the client to rate how much each statement applied to them over the past week, from 0 (did not apply at all) to 3 (applied very much, or most of the time).
- Add the 7 items for each scale: depression (items 3, 5, 10, 13, 16, 17 and 21), anxiety (items 2, 4, 7, 9, 15, 19 and 20) and stress (items 1, 6, 8, 11, 12, 14 and 18).
- Multiply each scale sum by 2 so it can be compared with the full 42-item DASS norms and published data. Each scale score then runs from 0 to 42.
- Compare each doubled score with the severity ratings below, then review the profile with the client in a clinical interview.
DASS-21 severity ratings
| Severity | Depression | Anxiety | Stress |
|---|---|---|---|
| normal | 0 to 9 | 0 to 7 | 0 to 14 |
| mild | 10 to 13 | 8 to 9 | 15 to 18 |
| moderate | 14 to 20 | 10 to 14 | 19 to 25 |
| severe | 21 to 27 | 15 to 19 | 26 to 33 |
| extremely severe | 28 to 42 | 20 to 42 | 34 to 42 |
What the score means and what it does not
The DASS measures depression, anxiety and stress as dimensions rather than diagnoses, so it has no direct link to DSM or ICD categories. The severity labels describe where a score falls in the population: “mild” means above the population average but well below the typical severity of people seeking help, not a mild disorder. Decisions based on a score profile should be made by an experienced clinician after a clinical examination. None of the DASS items asks about suicidal thoughts, so assess suicide risk separately when it is relevant.
Using the DASS-21 over time
The DASS is designed to measure current state and change in state over time, for example during treatment, on each of the three scales. Each response covers the past week. Compare doubled scores each time and discuss changes with the client.
Frequently asked questions
Why are DASS-21 scores multiplied by 2?
The DASS-21 has 7 items per scale, half of the full 42-item DASS. Doubling each scale sum makes it comparable with the DASS normative data and other published DASS data.
Which DASS-21 items belong to each scale?
Depression: items 3, 5, 10, 13, 16, 17 and 21. Anxiety: items 2, 4, 7, 9, 15, 19 and 20. Stress: items 1, 6, 8, 11, 12, 14 and 18.
What do the DASS-21 severity labels mean?
They describe how a score compares with the population. “Mild” means above the population average but well below the typical severity of people seeking help. They are not diagnoses.
Can the DASS-21 diagnose depression or anxiety?
No. The DASS is dimensional and has no direct link to diagnostic categories. Use it alongside a clinical examination.
Does the DASS-21 ask about suicide?
No. None of the items refers to suicidal thoughts, so assess suicide risk separately when it is relevant.
What if an item is missing?
The DASS FAQ gives one rule of thumb: allow up to 1 missing item per 7-item scale on the DASS-21, and state how missing items were handled. This tool needs every item before it shows scale scores.
Sources
Depression Anxiety Stress Scales (DASS), DASS21 response form. University of New South Wales.
DASS frequently asked questions. University of New South Wales.
Overview of the DASS and its uses. University of New South Wales.
The DASS was developed by S.H. Lovibond and P.F. Lovibond at the University of New South Wales. The DASS questionnaire is in the public domain, and permission is not needed to use it. Severity ratings are from the DASS manual (Lovibond and Lovibond, 1995).