How to use the repetitive motion hours calculator
Enter daily hours for typing, mouse work, assembly and hand tools, and handheld device use, plus how many days a week you do them. The page returns weekly hours for each type, each type's share of the daily total, and the overall weekly total. Shares are rounded to one decimal, so they may add to 99.9% or 100.1%, and that is noted under the result.
Why there is no score
Carpal tunnel symptoms are commonly measured by clinicians with the Boston Carpal Tunnel Questionnaire (BCTQ), a validated questionnaire with an 11-item symptom severity scale and an 8-item functional status scale, each answered on a 1-5 scale and averaged. Diagnosis also relies on a physical exam and nerve conduction studies. This page does not ask the BCTQ questions, so it does not build a risk score from invented weights; it shows only where your hours actually go. There is no single official safe weekly total, and workplace assessments such as the ACGIH Threshold Limit Value for Hand Activity weigh repetition and force rather than hours alone.
Tingling in the fingers or palm, waking at night with a numb hand, a weaker grip, or dulled sensation are reasons to be seen regardless of the hours. A small weekly total does not mean the wrist is fine (as of October 2026).
Frequently Asked Questions
There is no single official safe number of hours per week. Workplace assessments such as the ACGIH Threshold Limit Value for Hand Activity look at repetition and force, not hours alone. The page totals the hours you entered and shows where they concentrate; it does not set a safe limit.
Clinicians assess symptoms such as tingling with the Boston Carpal Tunnel Questionnaire (BCTQ), a validated instrument with an 11-item symptom severity scale and an 8-item functional status scale, each scored 1-5, alongside an exam and nerve conduction studies. This page is an hours tally that does not ask those questions, so it does not invent a symptom score. If you have symptoms, ask about a BCTQ-based assessment.
Each share is rounded to one decimal for display, which can leave the column adding to 99.9% or 100.1%.