Use the WOMAC calculator below to estimate a simplified osteoarthritis score from pain, stiffness and physical function. This is a domain-level estimate, not the full 24-item clinical questionnaire.
WOMAC calculator
This is a simplified WOMAC domain estimate — not the full 24-item clinical questionnaire. Rate pain, stiffness and physical function each 0 to 10; lower scores generally mean less symptom burden.
Your WOMAC estimate: 0/ 30
Pain0
Stiffness0
Function0
Pain 0 + Stiffness 0 + Function 0 = 0
Lower domain scores generally mean less pain, stiffness and functional difficulty. Full clinical WOMAC uses 24
items scored 0–4 — your clinician’s version may differ from this simplified estimate.
For education only — not a diagnosis. Scores here are estimates from the values you enter. Your clinician may
calculate WOMAC differently at appointments. Hurtl’s in-app WOMAC estimate is built from daily logs
and may differ from a single self-assessment.
WOMAC stands for the Western Ontario and McMaster Universities Osteoarthritis Index. It was developed for hip and knee osteoarthritis and is now used more broadly when clinicians want a standardised view of how OA affects daily life.
The three WOMAC domains
Full clinical WOMAC uses 24 questionnaire items grouped into pain (5 items), stiffness (2 items) and physical function (17 items), usually scored 0 to 4 per item.
This calculator uses simplified domain-level estimates (pain, stiffness, function each 0–10) aligned with daily symptom tracking — not the full 24-item clinical questionnaire.
How WOMAC is calculated
Simplified estimate = Pain + Stiffness + Physical function (each 0–10, total 0–30)
Full clinical WOMAC uses different item counts and scoring ranges. Your clinician’s version may not match a one-off self-assessment.
Worked example (simplified)
Domain
Score
Pain
5
Stiffness
4
Physical function
6
WOMAC estimate: 5 + 4 + 6 = 15
What do WOMAC scores mean?
Lower scores usually mean less pain, shorter stiffness and easier daily function. Trend over time matters more than a single number.
Tracking osteoarthritis over time
Log pain, stiffness and function consistently — Hurtl builds a running WOMAC estimate from your entries.
WOMAC (Western Ontario and McMaster Universities Osteoarthritis Index) is a patient-reported questionnaire covering pain, stiffness and physical function in osteoarthritis. Full clinical WOMAC uses 24 items; this calculator uses a simplified three-domain estimate.
How do you calculate WOMAC?
Full clinical WOMAC sums 24 questionnaire items across three domains. This simplified calculator adds pain, stiffness and physical function domain estimates (0–10 each) for a total of 0–30. It is not equivalent to the full validated index.
Is this the full WOMAC questionnaire?
No. This calculator uses simplified domain-level estimates aligned with daily symptom tracking. Full clinical WOMAC uses 24 items scored 0–4. Your clinician may use the standard questionnaire at appointments.
What is a good WOMAC score?
On this simplified 0–30 scale, lower scores generally mean less pain, stiffness and functional difficulty. There is no single normal score for everyone — interpretation depends on which joints are affected and your treatment.
Does Hurtl calculate WOMAC automatically?
Yes. Hurtl calculates a WOMAC estimate from your daily logs — pain, stiffness and physical function — with a 7-day trend on the Condition tab.
How often should WOMAC be measured?
In clinic, WOMAC is often completed at appointments. For personal tracking, logging pain, stiffness and function regularly gives a clearer picture than trying to recall how the past months felt from memory.
This article explains WOMAC for general information only. It is not medical advice, a diagnosis, or a recommendation to start, stop, or change treatment. WOMAC scores should be interpreted by your clinician in the context of your full clinical picture. Hurtl is not a medical device and does not provide clinical monitoring or treatment decisions.
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