Quick takeaway: QuickDASH = [(sum of answered item scores ÷ number answered) - 1] × 25. Enter at least 10 of the 11 responses. The result ranges from 0 to 100, with higher scores indicating greater reported disability and symptoms.
How to use the QuickDASH calculator
Use a completed official QuickDASH questionnaire, then enter its numeric item scores in the same order. Each answered item must be an integer from 1 to 5. Leave a missing response as Unanswered. The result panel shows the score, response sum, answered-item count and calculation.
QuickDASH scoring formula
QuickDASH = [(Σxᵢ / n) - 1] × 25
The divisor is the number of answered items, either 10 or 11. Do not enter 0 for a missing item.
Worked example
Suppose an assessment has these 11 scores: 2, 3, 2, 4, 2, 3, 2, 3, 4, 3, 2.
- Add the responses: 2 + 3 + 2 + 4 + 2 + 3 + 2 + 3 + 4 + 3 + 2 = 30.
- Divide by the 11 answered items: 30 ÷ 11 = 2.72727....
- Subtract 1 and multiply by 25: (2.72727... - 1) × 25 = 43.1818....
The displayed QuickDASH score is 43.2 out of 100. If one item is missing and the remaining 10 scores sum to 30, use [(30 ÷ 10) - 1] × 25 = 50.0.
Evidence note: The Institute for Work & Health scoring instructions require at least 10 responses. The optional Work and Sport/Music modules each contain four items and are scored separately; they are not included in this calculator.
QuickDASH score interpretation
This is a patient-reported upper-limb outcome score. All responses of 1 give 0; all responses of 5 give 100. The number is not a diagnosis or a percentage of anatomical damage. When comparing assessments, record the scores and use the same outcome measure at follow-up.
Common Mistakes
- Dividing by 11 when only 10 items were answered.
- Treating a missing response as 0 or filling it with a guessed answer.
- Calculating a score when two or more responses are missing.
- Adding optional module responses to the main 11-item score.
- Assuming a single change threshold applies to every person. IWH's guidance on clinically important change discusses measurement error and variability between study populations.
Use the official questionnaire for the assessment. This calculator performs scoring arithmetic and does not replace its instructions or clinical interpretation.