Scale Overview & Construct
10-item industry-standard scale measuring perceived usability of any specific system, app, or device the respondent has in mind while answering.
Purpose & Measurement Objectives
Instrument Specifications
Academic Citation & Instrument Provenance
When referencing this instrument in research, academic theses, or clinical institutional audits, please cite the original author publication:
Governance, Boundaries & Ethical Use
Imported from the OpenScales open item-bank project. This specific digital implementation has not been independently clinically validated by PsiQ — scores are for self-reflection, research, and educational purposes only, and are not a diagnosis.
License: CC BY 4.0. Citation: Brooke, J. (1996). SUS: A "quick and dirty" usability scale. In Usability Evaluation in Industry. Taylor & Francis. This is not a diagnostic tool.
Frequently Asked Questions
What is the System Usability Scale?
10-item industry-standard scale measuring perceived usability of any specific system, app, or device the respondent has in mind while answering.
How long does the System Usability Scale take?
It takes about 4 minutes to answer all 10 questions. You can go at your own pace.
Is this test free, and is it available in Hindi?
Yes, it is free with a PsiQ account. The questions and answer options are available in English, Hindi and Hinglish.
Can this test diagnose a condition?
No. Online self-report scales are for self-reflection, education and research, not diagnosis. If you are worried about your mental health, please speak to a qualified mental-health professional.