What is the DASS-21 used for?

The DASS-21 is used to measure the severity of depression, anxiety, and stress symptoms over the past week. Clinicians use it to screen for emotional distress, to separate which state is most prominent, and to track how symptom severity changes across a course of care. It supports assessment rather than diagnosis.

How many items does the DASS-21 have?

The DASS-21 has 21 items, divided into three subscales of seven items each: depression, anxiety, and stress. Every item is rated on a four-point scale from 0 to 3 based on the past week. It is a short form of the original 42-item DASS, which uses the same structure.

How is the DASS-21 scored?

Each of the 21 items is scored 0 to 3, and the seven items in each subscale are summed. Because the DASS-21 is a short form, each subscale total is multiplied by 2 so it can be compared with the original 42-item DASS norms, giving three scores from 0 to 42.

What do the DASS-21 severity bands mean?

After doubling, each subscale falls into a band from normal to extremely severe. For depression, 0 to 9 is normal and 28 or higher is extremely severe; anxiety and stress use their own cutoffs. The bands describe relative severity within a reference population, not diagnostic thresholds, and guide follow-up decisions.

Is the DASS-21 free to use?

Yes. The DASS is a public domain measure, so it can be reproduced and administered without a license fee or written permission. The developers, Lovibond and Lovibond, make the scales and scoring instructions freely available. The manual, which contains full normative data, is sold separately by the Psychology Foundation of Australia.

Can the DASS-21 be used to track progress over time?

Yes. The DASS-21 is brief, so it is well suited to repeated administration during a course of care. Giving it at consistent intervals lets you compare subscale scores and see whether depression, anxiety, or stress symptoms are improving. In Zentake you can re-send it on a schedule and view change over time.

DASS-21 | Template & auto-scoring

The Depression Anxiety Stress Scale-21 (DASS-21) is a 21-item self-report questionnaire that measures the severity of negative emotional symptoms across three related states: depression, anxiety, and stress. Adapted from the original 42-item DASS, it asks patients to rate how much each statement applied to them over the past week, producing three separate subscale scores.

Why healthcare providers use the DASS-21

Three dimensions in one form. It separates depression, anxiety, and stress so you can see which state is driving distress rather than a single blended score.
Brief and low burden. Twenty-one items take most patients a few minutes, which supports routine use at intake and at follow-up.
Sensitive to change. Because it is quick to repeat, it tracks shifts in symptom severity across a course of care.
Dimensional, not diagnostic. It reports severity on a continuum, which complements structured diagnosis rather than replacing it.
Public domain. It is free to reproduce and administer, which lowers the barrier to standardized screening across a practice.

Which settings use the DASS-21?

Primary care. Clinicians use it to screen for co-occurring mood and anxiety symptoms during routine visits.
Mental health clinics. It supports intake assessment and ongoing measurement-based care.
Research studies. It is widely used as a validated outcome measure in clinical and community samples.
Student and university health. It helps screen distress in young-adult populations.

What does the DASS-21 measure?

The DASS-21 measures the severity of negative emotional symptoms over the past week across three subscales, each made up of seven items. It is designed to assess dimensional severity rather than to assign a categorical diagnosis.

Depression. Low mood, hopelessness, devaluation of life, lack of interest, and loss of pleasure.
Anxiety. Autonomic arousal, situational anxiety, and the subjective experience of anxious affect.
Stress. Persistent tension, irritability, agitation, and difficulty relaxing.

Scoring the DASS-21

Number of items. 21 items, split into three seven-item subscales.
Per-item scale. Each item is rated 0 to 3, from did not apply to me at all to applied to me very much or most of the time.
Total score range. Each subscale sums to 0 to 21 raw, then is multiplied by 2 for interpretation, giving 0 to 42 per subscale.
Score direction. Higher scores indicate greater symptom severity.

The DASS-21 does not produce a single overall total; it is read as three separate subscale scores, each doubled to align with the original 42-item DASS norms. The cutoffs below describe relative severity within a reference population and are not diagnostic thresholds. Use them to guide clinical decision-making alongside history and clinical judgment.

Score	Interpretation	Suggested next step
Depression 0-9, Anxiety 0-7, Stress 0-14	Normal	Routine monitoring
Depression 10-13, Anxiety 8-9, Stress 15-18	Mild	Monitor and consider further assessment
Depression 14-20, Anxiety 10-14, Stress 19-25	Moderate	Consider further assessment
Depression 21-27, Anxiety 15-19, Stress 26-33	Severe	Consider further assessment
Depression 28 or higher, Anxiety 20 or higher, Stress 34 or higher	Extremely severe	Prompt clinical evaluation

Best practices for administration

Set the time frame. Remind patients to rate the past week, since the recall window shapes the score.
Administer privately. Give patients a quiet, unhurried setting so responses reflect their current experience.
Score by subscale. Keep depression, anxiety, and stress separate rather than combining them into one number.
Repeat at consistent intervals. Use the same spacing between administrations when tracking change over time.
Pair with clinical review. Treat elevated scores as a prompt for follow-up, not a standalone decision.

How Zentake helps with the DASS-21

Automatic scoring. Subscale totals are calculated on submit, with no hand-tallying.
Longitudinal tracking. Re-send the form on a schedule and view change over time.
Before the visit. At mental health practices patients complete it from home on any device, so the clinician starts informed.
HIPAA compliant. Responses are encrypted, with a signed BAA on every plan.

References

The DASS-21 was developed by Lovibond and Lovibond and published in the Manual for the Depression Anxiety Stress Scales (2nd ed., 1995, Psychology Foundation of Australia). The DASS is a public domain measure and may be reproduced without charge; the official scales and background are available at the University of New South Wales DASS site.

Psychometric properties of the DASS-21, including its three-factor structure, were reported by Antony and colleagues (1998) and Henry and Crawford (2005). The severity bands shown above follow the cutoffs published in the DASS manual, summarized by NovoPsych.

Last updated: August 2026

DASS-21