Depression Severity Assessment Calculator
Calculate depression severity score based on PHQ-9 questionnaire responses
About this calculator
The Depression Severity Assessment Calculator uses the PHQ-9 (Patient Health Questionnaire-9) to evaluate depression symptoms and determine severity levels. This evidence-based screening tool helps individuals and healthcare providers identify potential depression by scoring responses to nine key questions about mood, sleep, energy, and other symptoms. The calculator provides standardized results ranging from minimal to severe depression, making it valuable for initial screening, treatment monitoring, and deciding when professional help may be needed.
How to use
Answer all nine PHQ-9 questions honestly based on how you've felt over the past two weeks. Rate each symptom from 0 (not at all) to 3 (nearly every day). The calculator automatically totals your responses and provides a depression severity score with interpretation guidelines.
Frequently asked questions
What do the PHQ-9 score ranges mean?
Scores of 0-4 indicate minimal depression, 5-9 mild, 10-14 moderate, 15-19 moderately severe, and 20-27 severe depression symptoms.
Is this calculator a medical diagnosis?
No, this is a screening tool only. A qualified mental health professional must provide an official depression diagnosis and treatment plan.
How often should I use this assessment?
Healthcare providers often recommend weekly or bi-weekly monitoring during treatment, but frequency depends on individual circumstances and professional guidance.