The free System Usability Scale service

Run a free System Usability Scale survey and get valuable insights of the usability and learnability of your product. The response form is multilingual and works in French, English, German, Spanish and Swedish.

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Screenshot of the scorecard showing a SUS score of 61 (Grade D).

How QuickSus works

Running a System Usability Scale survey in QuickSus is easy! The System Usability Scale (SUS) is a simple, ten-item attitude questionnaire giving a global view of subjective assessments of usability. The System Usability Scale has been widely used in the evaluation of a range of products over the eyars and has been shown to detect differences at smaller sample sizes than other questionnaires.

With as few as 8-12 respondents you will get valuable insights on your product's usability and learnability.

  • 1 Sign up for a free account
  • 2 Create a SUS survey
  • 3 Invite respondents (we'll provide you with invitation texts)
  • 4 Collect responses and get valuable insights on your product

Benefits of the System Usability Scale (SUS)

Reliable

Users respond consistently to the scale items, and SUS has been shown to detect differences at smaller sample sizes than other questionnaires. *

Valid

SUS measures what it purports to measure, providing accurate and meaningful insights into your system's usability.

Comprehensive

SUS measures both learnability and usability, giving you a better picture of your products's user experience.

* Journal of Usability Studies, Vol. 8, Issue 2, February 2013

The System Usability Scale

In systems engineering, the system usability scale (SUS) is a simple, ten-item attitude Likert scale giving a global view of subjective assessments of usability. It was developed by John Brooke at Digital Equipment Corporation in the UK in 1986 as a tool to be used in usability engineering of electronic office systems.

The SUS has been widely used in the evaluation of a range of systems. Bangor, Kortum and Miller have used the scale extensively over a ten-year period and have produced normative data that allow SUS ratings to be positioned relative to other systems.

SUS in research: