- Before you use this calculator, understand what is System Usability Scale (SUS).
- After this, go through the rationale behind its calculation here.
- Knowing the SUS score is not enough, learn how to interpret the SUS score here. As a rule of thumb, 68 is the average SUS score.
- Choosing neutral for all 10 questions in SUS will only give you a score of 50. Given that 68 is the 50th percentile, this is a below-average rating.
- Odd-numbered questions are all in a positive tone, you will want your participants to strongly agree.
- Even-numbered questions are all in a negative tone, something must have gone wrong in the usability of your website, software or system when your participants strongly agree.
- Learn how to interpret the SUS score here.