The System Usability Scale (SUS) is a validated ten-item questionnaire that produces a single usability score for any product or service. Created by John Brooke at Digital Equipment Corporation in 1986, it has become one of the most widely used usability measurement tools in the world, partly because it takes under two minutes to complete, partly because decades of published data allow scores to be benchmarked against industry norms and competitor products.
System Usability Scale
A ten-question benchmark that scores usability on a 100-point scale
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Designers Academy
18 February 2025 · 4 min read
ResearchMethods
In brief
The System Usability Scale (SUS) is a validated ten-item questionnaire developed by John Brooke to produce a single, quantifiable usability score (0-100) for any product or service.
