Mental Health Calculators and Screening Tools
Standardized screening tools for depression, anxiety, PTSD, substance use disorders, and suicidality — used in primary care, psychiatry, and counseling settings.
Curated Tools for Mental Health & Psychiatry (25)
PHQ-9
Free PHQ-9 depression screening questionnaire. Take the Patient Health Questionnaire-9 to assess depression severity with instant scoring and interpretation. Also screen for anxiety with [GAD-7](/tools/gad7).
GAD-7
Free GAD-7 anxiety screening questionnaire. Take the Generalized Anxiety Disorder 7-item scale to assess anxiety severity with instant scoring and interpretation. Also screen for depression with [PHQ-9](/tools/phq9).
PHQ-2
Quick two-question depression screen using the PHQ-2. A score of 3 or higher suggests further evaluation with the full [PHQ-9](/tools/phq9).
GAD-2
Quick two-question anxiety screen using the GAD-2. A score of 3 or higher suggests further evaluation with the full [GAD-7](/tools/gad7).
AUDIT
Screen for hazardous and harmful alcohol use with the 10-question AUDIT. Scores range from 0 to 40 across four risk zones. For quick screening use [CAGE](/tools/cage).
C-SSRS Screener
Screen for suicidal ideation and behavior using the Columbia Suicide Severity Rating Scale screener version. Assesses risk level based on ideation severity.
PCL-5
Screen for PTSD using the PCL-5 checklist. Score ranges from 0 to 80; a score of 31-33 or higher suggests probable PTSD.
EPDS
Screen for postnatal depression using the Edinburgh Postnatal Depression Scale. Scores of 10 or higher suggest possible depression.
BDI-II Score
Interpret Beck Depression Inventory-II (BDI-II) total scores. One of the most widely cited depression severity measures, scoring 0–63.
HAM-A
Rate clinician-observed anxiety severity using the 14-item Hamilton Anxiety Rating Scale.
HADS
Screen anxiety and depression symptom burden using the 14-item HADS (HADS-A + HADS-D).
MDQ Screener
Screen for bipolar-spectrum symptom patterns using the Mood Disorder Questionnaire (MDQ) criteria framework.
YMRS
Rate manic symptom severity with the clinician-rated 11-item Young Mania Rating Scale.
ISI Score
Assess insomnia burden with the 7-item Insomnia Severity Index (ISI) and classify symptom severity.
Opioid Risk Tool
Screen risk of opioid misuse with the Opioid Risk Tool before initiating long-term opioid therapy.
CIWA-Ar
Estimate alcohol withdrawal severity with the Clinical Institute Withdrawal Assessment for Alcohol, revised (CIWA-Ar).
COWS Score
Estimate opioid withdrawal severity using the Clinical Opiate Withdrawal Scale (COWS).
ASRS v1.1
Screen for adult ADHD symptoms using the 6-item ASRS v1.1 Part A screener.
Fagerstrom Test
Estimate nicotine dependence severity with the 6-item Fagerstrom Test.
DAST-10
Screen non-alcohol drug-use problems using the 10-item Drug Abuse Screening Test (DAST-10).
GDS-15
Screen depressive symptoms in older adults using the 15-item GDS-15 yes/no questionnaire.
PSS-10
Measure perceived stress burden over the past month using the 10-item PSS-10.
WHO-5
Measure recent positive well-being with the 5-item WHO-5 index and percentage score.
OCI-R
Screen obsessive-compulsive symptom burden using the 18-item OCI-R across six symptom domains.
SBQ-R
Screen suicide-risk signal using the 4-item Suicidal Behaviors Questionnaire-Revised (SBQ-R).
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Frequently Asked Questions
These calculators are for educational and clinical decision support purposes only. Always apply clinical judgment and consult current institutional guidelines. Results are not a substitute for full clinical assessment.