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System Usability Scale (SUS)

What is System Usability Scale (SUS)?

The System Usability Scale (SUS) is a post-test questionnaire comprising 10 items designed to evaluate the perceived usability of a system. Scores on the SUS can range from 0 to 100, providing insights into users’ subjective assessments of system usability.

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Why is the System Usability Scale (SUS) Important?

  • Comprehensive Assessment: The SUS offers a thorough evaluation of system usability, capturing users’ perceptions across multiple dimensions.
  • Standardized Measurement: With 10 standardized items, the SUS ensures consistency in usability assessment across systems.
  • Quantifiable Feedback: Generating scores from 0 to 100, the SUS provides measurable insights into system usability.


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SUS: Enhancing UX with the System Usability Scale

SUS: Enhancing UX with the System Usability Scale

Usability is an essential component of the overall user experience (UX), since it focuses on the ease-of-use and efficiency of a product. The system usability scale (SUS) is the quintessential method for understanding the usability of an application.