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Depression symptoms are summarized with a nine item patient questionnaire that reflects how often common experiences have occurred over the past two weeks. Many people look for a PHQ 9 score calculator to turn those answers into an easy result that supports a clearer conversation about next steps.
You mark how often each item applied to you and then read a single number with a plain language band that describes overall severity. A short profile also highlights where symptoms cluster so changes over time are easier to notice and discuss.
As one example, a total of 12 usually sits in the middle range, so planning a talk with a clinician and considering a brief course of therapy may be useful. Repeating the check after a steady routine can show whether things are easing or building.
Item nine asks about thoughts of being better off dead or self harm. If you feel unsafe or at risk, seek urgent help in your area now.
For consistent results answer every item, use the same two week window each time, and try to complete the check at a similar time of day. Most people finish in under two minutes, and your responses stay on this device. This tool provides informational estimates and does not substitute professional advice.
The Patient Health Questionnaire with nine items (PHQ‑9) measures perceived frequency of depressive symptoms over a recent two week period. Each item is scored on four ordered choices from “Not at all” to “Nearly every day”, represented numerically as integers 0 to 3.
The primary result is the total score, the sum of all nine item scores. To add interpretive context, three subscores are derived: a Core pair that focuses on interest and mood, a Somatic cluster covering sleep, energy, appetite, and psychomotor change, and a Cognitive or affective pair addressing self‑evaluation and concentration. Item nine is also surfaced as a safety indicator using its plain‑language frequency.
Results are grouped into bands that run from “Minimal” through “Severe”. Crossing a boundary signals a meaningful shift in symptom burden; values close to an edge should be read with caution and compared to what is typical for the same person.
Comparisons are most valid when the same person answers against the same two week window with similar conditions. Scores are a screen rather than a diagnosis and should be interpreted alongside clinical judgment and context.
| Symbol | Meaning | Unit/Datatype | Source |
|---|---|---|---|
| Item scores 1 to 9 | integer 0–3 | Input | |
| Total score | integer 0–27 | Derived | |
| Core subscore (interest + mood) | integer 0–6 | Derived | |
| Somatic subscore (sleep, energy, appetite, psychomotor) | integer 0–12 | Derived | |
| Cognitive/affective subscore (self‑view, concentration) | integer 0–6 | Derived | |
| Item nine safety indicator | integer 0–3 | Input |
| Threshold Band | Lower Bound | Upper Bound | Interpretation | Action Cue |
|---|---|---|---|---|
| Minimal | 0 | 4 | Few or no symptoms reported | Maintain healthy routines |
| Mild | 5 | 9 | Light burden with some impact | Self‑help and monitor |
| Moderate | 10 | 14 | Clear burden affecting function | Discuss treatment options |
| Moderately Severe | 15 | 19 | Marked burden and impairment | Active treatment recommended |
| Severe | 20 | 27 | Very high burden | Seek urgent professional help |
Integer scoring only with a fixed scale of 0–3 per item and 0–27 total. No rounding occurs. Decimal separators are not used. Identical inputs always yield identical outputs.
| Field | Type | Min | Max | Step/Pattern | Error Text | Placeholder/Default |
|---|---|---|---|---|---|---|
| Item response | integer (radio) | 0 | 3 | four fixed choices | n/a (must answer all) | — |
Encoded answers r |
string | 9 chars | 9 chars | ^[0-3\-]{9}$ |
invalid codes ignored | --------- |
| Input | Accepted Families | Output | Encoding/Precision | Rounding |
|---|---|---|---|---|
| Nine frequency selections | Not at all, Several days, More than half the days, Nearly every day | Total score, band label, subscores, safety indicator | Integers; optional URL param r with 9 chars (0–3 or ‘-’) |
None |
Processing is browser‑based; responses are kept on the device and not uploaded. An optional query parameter encodes answers for the current session view only.
r strings are ignored and not applied.r are rejected by pattern checks.r values are ignored.r.r between people breaks comparability.PHQ‑9 scoring converts nine frequency choices into a total with a clear band and subscores.
Example: Choices 2,1,3,2,1,0,1,2,0 produce total 12 with a moderate band and a somatic‑leaning profile.
Use the result to inform a thoughtful discussion about support and treatment options.
No. Processing happens on your device and answers are not uploaded or retained on a server.
Keep your device secure if you choose to leave the page open.It is a summary of symptom frequency. The band label translates the number into a plain range from minimal to severe burden.
It reflects your own report and is sensitive to context. Use it as a screen and discuss results with a qualified professional.
Each item is scored 0 to 3 and totals range from 0 to 27. Three subscores highlight symptom clusters.
Yes. Once loaded, scoring runs on the device. No network calls are needed to compute results.
Yes. A valid result requires one selection for each of the nine items.
Add the nine integer scores to get the total, then use the threshold table to read the band.
Scores near a band edge should be read with context and repeated later to confirm direction before major decisions.