5 validated tools

Mood Calculators

Validated screening and severity tools for depression, low mood, and depressive symptom monitoring — across primary care, mental health, and aged-care settings. Score on submit, track over time, and export for letters or care plans.

When to use: Use when screening for depression, monitoring treatment response, or quantifying mood for an MBS Better Access plan, GP review, or NDIS report.

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PHQ-9
Patient Health Questionnaire-9
A 9-item screening tool for depression severity that maps onto the DSM-IV and DSM-5 criteria 9 items~5 min
PHQ-2
Patient Health Questionnaire-2
A 2-item ultra-brief screener for depression, using the first two items of the PHQ-9 2 items~1 min
PHQ-4
Patient Health Questionnaire-4
A 4-item ultra-brief combined screener for depression and anxiety (combines PHQ-2 + GAD-2) 4 items~2 min
CES-D-R
Center for Epidemiologic Studies Depression Scale - Revised
A 20-item measure of depression symptoms based on DSM-5 criteria, revision of the original NIMH CES-D 20 items~8 min
GDS-15
Geriatric Depression Scale (15-item Short Form)
A 15-item yes/no screening tool for depression in older adults (55+) 15 items~5 min

All calculators use published scoring guidelines. Scoring happens in your browser — no data is stored or transmitted on the public calculator pages. These tools are clinical scoring calculators for professional reference and do not provide clinical diagnoses.

Use of these tools is subject to our Terms of Service.

Other clinical domains

33 validated assessments across 8 domains. Pick the one that matches your presenting concern.

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Last updated: 25 April 2026