How to use the System Usability Scale in modern UX

The System Usability Scale (SUS), created by John Brooke in 1986, is a widely-used, cost-effective tool for assessing the usability of products and services, such as software, websites, and applications. It consists of a ten-question template with responses ranging from strongly agree to strongly disagree, allowing designers and product owners to evaluate user experience efficiently. SUS is advantageous for its simplicity, affordability, and ability to yield reliable results, even from small groups. It provides an overall usability score that can be interpreted relative to a benchmark, with scores above 68 indicating good usability. The SUS process involves steps like selecting an administration method, conducting usability tests, and analyzing results to identify areas for improvement. While it does not diagnose specific issues, it highlights whether usability work is needed, and can be continuously refined with user feedback.

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