UX Scale Labs
13 Research-Validated Instruments

Measure User Experience
with Scientific Precision

Professional-grade UX questionnaires with validated scoring algorithms. Export results as PDF, CSV, or TXT. All data stays in your browser.

01

Usability Scales

SUS 10 items

System Usability Scale

The industry standard for measuring perceived usability. Yields a score from 0-100.

~3 min 5-point Likert
UMUX 4 items

Usability Metric for User Experience

A compact alternative to SUS with comparable reliability and validity.

~1 min 7-point Likert
UMUX-L 2 items

UMUX-Lite

Ultra-short usability measure for minimal participant burden.

~30 sec 7-point Likert
CSUQ 16 items

Computer System Usability Questionnaire

IBM's comprehensive measure with subscales for system and interface quality.

~5 min 7-point Likert
PSSUQ 16 items

Post-Study System Usability Questionnaire

Lab-based version of CSUQ for controlled usability studies.

~5 min 7-point Likert
02

Task-Level Measures

SEQ 1 item

Single Ease Question

Quick task difficulty assessment after each task completion.

~10 sec 7-point scale
ASQ 3 items

After-Scenario Questionnaire

Measures satisfaction with task completion across ease, time, and support.

~1 min 7-point Likert
03

Comprehensive UX Measures

USE 30 items

USE Questionnaire

Evaluates Usefulness, Satisfaction, and Ease of Use with four subscales.

~8 min 7-point Likert
TAM 12 items

Technology Acceptance Model

Predicts technology adoption through perceived usefulness and ease of use.

~4 min 7-point Likert
04

Satisfaction & Loyalty

NPS 1 item

Net Promoter Score

Measures customer loyalty and likelihood to recommend.

~10 sec 0-10 scale
CSAT 5 items

Customer Satisfaction Score

Direct measurement of customer satisfaction with product or service.

~1 min 5-point scale
05

Generic Measures

SRL 6 items

Self-Reported Learnability

Assesses how easily users can learn to use a system.

~2 min 7-point Likert
BUX 8 items

Basic UX Satisfaction Survey

General-purpose UX satisfaction measure for quick assessments.

~2 min 5-point Likert
SUS

System Usability Scale

Results

0 /100

Overall Score

Interpretation

Individual Responses

Item Question Response Adjusted

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About UX Scale Labs

A collection of research-validated questionnaires for measuring user experience. All scoring algorithms are implemented according to their original academic publications.

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Validated Algorithms

Scoring methods from peer-reviewed academic publications.

Multiple Exports

Download results as PDF reports, CSV data, or plain text.

References

Brooke, J. (1996). SUS: A "quick and dirty" usability scale. Usability Evaluation in Industry, 189–194.

Davis, F. D. (1989). Perceived usefulness, perceived ease of use, and user acceptance of information technology. MIS Quarterly, 13(3), 319–340.

Finstad, K. (2010). The usability metric for user experience. Interacting with Computers, 22(5), 323–327.

Lewis, J. R. (1991). Psychometric evaluation of an after-scenario questionnaire. ACM SIGCHI Bulletin, 23(1), 78–81.

Lewis, J. R. (1995). IBM computer usability satisfaction questionnaires. Intl. J. Human–Computer Interaction, 7(1), 57–78.

Lewis, J. R., Utesch, B. S., & Maher, D. E. (2013). UMUX-LITE. Proceedings of CHI '13, 2099–2102.

Lund, A. M. (2001). Measuring usability with the USE questionnaire. Usability Interface, 8(2), 3–6.

Reichheld, F. F. (2003). The one number you need to grow. Harvard Business Review, 81(12), 46–54.

Sauro, J., & Dumas, J. S. (2009). Comparison of three one-question, post-task usability questionnaires. Proceedings of CHI '09, 1599–1608.