1
Run Your Survey
Administer the 10 standard SUS questions to your users after they interact with your product.
Free SUS Scoring Tool
Calculate your System Usability Scale score and compare it against industry benchmarks. Quick, reliable, and free.
No account required. Your data stays in your browser.
How It Works
2
Enter Average Scores
Input the average response for each question. We handle the positive/negative scoring adjustments.
3
See Your Score
Get your SUS score on a 0-100 scale and see how it compares to industry benchmarks.
Why Use SUS?
Quick and reliable - only 10 questions needed
Industry standard since 1986, validated across thousands of studies
Compare your score against industry benchmarks
Technology-agnostic - works for any product or system
Want to Run Your Own SUS Surveys?
Votito makes it easy to create and distribute SUS surveys, then calculate scores automatically.
Ready-made SUS templates
Shareable survey links
Automatic scoring
Benchmark comparison
Create New SUS Survey
How SUS scoring works
The System Usability Scale (SUS) was created by John Brooke in 1986. It provides a single number representing a composite measure of usability.
Scoring method:
- Positive questions (odd: 1, 3, 5, 7, 9): subtract 1 from the score
- Negative questions (even: 2, 4, 6, 8, 10): subtract the score from 5
- Sum all 10 normalized scores (each 0-4), then multiply by 2.5
- Final score ranges from 0 to 100
Interpreting scores:
- Above 80.3: Excellent (A grade)
- 74-80.3: Good (B grade)
- 68-74: OK (C grade)
- 51-68: Poor (D grade)
- Below 51: Awful (F grade)
Learn more:
SUS Score Results
Individual survey response
Run Your Own SUS Surveys
Create professional SUS surveys and collect responses with Votito's survey platform.
Create New SUS Survey