System Usability Scale (SUS) Score Calculator

This page can be used to calculate scores based upon the process originally devised by John Brooke [1]. A total score of more than 68 is considered to be above average [2]. In addition, scores are translated into grades (A, B, C, D, and F) and an approximation of the adjectives specified by the work of Bangor, Kortum and Miller [3].

Strongly disagreeStrongly agree
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.


Enter your scores, per question, to calculate total SUS score. A score should be given for all questions.

If you do not feel that you can respond to a particular question then mark it at the centre point of the scale.

[1]Brooke, J. (1996). SUS-A quick and dirty usability scale. Usability evaluation in industry, 189(194), 4-7.
[2]Sauro, J. (2011). SUStisfied? Little-known System Usability Scale facts. User Experience: The Magazine of the User Experience Professionals Association, 10(3). [Last accessed: 9 March 2020].
[3]Bangor, A., Kortum, P. and Miller, J. (2009). Determining what individual SUS scores mean: Adding an adjective rating scale. Journal of usability studies, 4(3), 114-123.
Created by @StuartAffect - 2020.