phq 9 calculator

What is the PHQ-9?

The PHQ-9 (Patient Health Questionnaire-9) is a short, evidence-based screening tool used to measure the frequency of depression symptoms over the past two weeks. It is commonly used in primary care, counseling settings, and telehealth visits because it is quick, reliable, and simple to score.

This calculator gives you an instant score from 0 to 27 and a severity range that can guide your next step. It does not replace a clinical diagnosis, but it can be a useful check-in tool.

How PHQ-9 scoring works

• Each of the 9 questions is scored from 0 to 3.
• Your total score is the sum of all 9 answers (maximum = 27).
• Higher scores indicate greater symptom burden.
• Question 10 (functional difficulty) is often reviewed clinically but is not included in the 0-27 total score.

Score interpretation bands

• 0–4: Minimal or none
• 5–9: Mild
• 10–14: Moderate
• 15–19: Moderately severe
• 20–27: Severe

How to use your result

A single score should be interpreted with context. Sleep, stress, recent life events, medical conditions, substance use, and medication changes can all influence responses. If your score is elevated or symptoms are affecting daily life, it is a good idea to talk with a licensed clinician.

When to seek support sooner

• You scored in the moderate, moderately severe, or severe range.
• Your symptoms have persisted for 2+ weeks and affect school, work, or relationships.
• You selected anything above 0 on question 9 (self-harm thoughts).

Important safety note

If you are in immediate danger or may act on thoughts of self-harm, call emergency services right now. In the U.S. and Canada, you can call or text 988 for the Suicide & Crisis Lifeline. If you are outside these regions, contact your local emergency number or nearest crisis line.

Frequently asked questions

Can this diagnose depression?

No. The PHQ-9 is a screening and monitoring tool. Diagnosis requires a full clinical assessment by a qualified professional.

How often should I retake it?

Many people use the PHQ-9 every 2 to 4 weeks to monitor trends. The trend over time is often more meaningful than one isolated score.

What if my score goes up?

If your score rises, especially by several points, consider scheduling a visit with your doctor or therapist. Bring your scores to discuss changes in mood, sleep, stress, and functioning.

Final takeaway

This PHQ-9 calculator is a practical way to track emotional well-being and start informed conversations with a healthcare provider. If you are struggling, you deserve support—and help is available.