DAS28 is a composite score used to measure how active rheumatoid arthritis (RA) is at a given time. It’s widely used in clinics and trials to guide treatment decisions and to assess response to therapy.
DAS28-ESR Calculator
Disease Activity Score using 28 joints, ESR, and patient global assessment (educational use only).
1. Joint counts
Count of tender joints out of the standard 28 joints.
Count of swollen joints out of the standard 28 joints.
2. Inflammation marker
Erythrocyte sedimentation rate (Westergren, mm/h).
3. Patient global assessment
0 = best possible health; 100 = worst possible disease activity.
DAS28-ESR score
0.00
Important:
- This calculator is for education only and does not replace rheumatologist assessment.
- DAS28 must be interpreted in context: joint exam, imaging, comorbidities, and treatment goals.
- Never change medication or treatment based solely on this tool.


