Digital Corps

System Usability Scale Template

Quick Tip!

Use the System Usability Scale for a way to quantitatively measure the usability of a system!

Helpful Staff for this Topic

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The System Usability Scale is a survey given to participants after they have completed all of the tasks for a usability test. It consists of 10 questions with a five-point Likert scale for respondents, where 5 = strongly agree to 1 = strongly disagree. The ten statements are as follows:

1. I think that I would like to use this system frequently.
2. I found the system unnecessarily complex.
3. I thought the system was easy to use.
4. I think that I would need the support of a technical person to be able to use this system.
5. I found the various functions in this system were well integrated.
6. I thought there was too much inconsistency in this system.
7. I would imagine that most people would learn to use this system very quickly.
8. I found the system very cumbersome to use.
9. I felt very confident using the system.
10. I needed to learn a lot of things before I could get going with this system.

Once participants complete the survey, calculate the usability scores using the following steps based on the participants 1 to 5 score ranking (1 = strongly disagree, 5 = strongly agree):

• For each odd numbered question, subtract 1 from the score.
• For each even numbered question, subtract their score from 5.
• Take these new values, add up the total score. 
• Multiply this number by 2.5.
• Score is out of 100, but is NOT a percentage.

Do not edit this template on OneDrive – you must make a copy first.

To get started, download the template and save a copy on your local machine. Then edit the Excel spreadsheet and upload it to the appropriate project folder on OneDrive.

Use a bar chart to display each participant’s system usability score. Report on a y-axis of 100, as that is the maximum score. For lower scores, it is recommended to include additional observations and analysis to help explain why participants struggled with the system being tested.

• > 80.3 is an A: Users love your website and will recommend it.
• Around 68 is a C. You’re doing OK, but improvements could be made.
• 51 or under is an F. Make usability your priority now and fix fast.

The System Usability Scale Template can be found below.