Yale-Brown Obsessive Compulsive Scale (Y-BOCS)

Yale-Brown Obsessive Compulsive Scale (Goodman 1989): the 10-item obsessive-compulsive severity total (0-40) split into obsession and compulsion subscores.

Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.

Example

Item 1
2
Item 2
2
Item 3
2
Item 4
2
Item 5
2
Item 6
2
Item 7
2
Item 8
2
Item 9
2
Item 10
2

Result: Y-BOCS 20: moderate (16–23) — obsessions 10/20, compulsions 10/20.

The tool opens with these values already filled in. Replace them with your own.

What the result means

10-item total
items 1-5 grade obsessions, 6-10 grade compulsions, each 0-4. Total 0-40 (each subtotal 0-20).
Severity
subclinical 0-7; mild 8-15; moderate 16-23; severe 24-31; extreme 32-40. A blank item withholds the band.

What you enter

  • Item 1
  • Item 2
  • Item 3
  • Item 4
  • Item 5
  • Item 6
  • Item 7
  • Item 8
  • Item 9
  • Item 10
How this is calculated

Goodman WK, Price LH, Rasmussen SA, et al. The Yale-Brown Obsessive Compulsive Scale. I. Development, use, and reliability. Arch Gen Psychiatry. 1989;46(11):1006-1011. Read the source ↗

A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.

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Built by Clay Good. Source on GitHub.