Measuring the effectiveness of the user experience

Aleksandra Słowik | 2024-02-02

In a dynamic digital age where companies are striving to gain a competitive advantage, user experience performance metrics play a crucial role. From assessing ease of use and user engagement to analyzing satisfaction and conversion rates, UX metrics provide valuable information for companies seeking to optimize their offerings.

Don Norman, a designer and a researcher, reminds that "it's not always worth solving the problem they ask you to solve. It's almost always the wrong problem." This key thought underscores the need to understand the real needs of users. Data analysis can help identify the right challenges to address to further improve the ux.

What are ux metrics?

UX metrics are a set of quantitative data utilized to measure, compare and track the user experience of a website or application over time. They are key to ensuring that UX design decisions are made and evaluated based on solid evidence, not opinion.

List of metrics

Types of metrics

UX metrics can vary depending on the goals of a particular product or service, and can be divided into behavioral and user attitudes.

  • Behavioral - these metrics provide insights into how users interact with a product and the challenges they encounter. These metrics are crucial for usability and can be collected using analytical tools, such as:

    • Bounce Rate: measures how many people leave a website after starting an interaction, for example: after adding products to a cart without making a purchase.
    • Average Session Duration: Determines how much time users spend on a website during a single visit. A longer duration may indicate greater engagement.
    • Conversions: Measure how many users complete desired actions, such as making a purchase. These are essential for e-commerce websites.
    • Click-Through Rate (CTR): Widely used in email marketing and advertising campaigns, it assesses the percentage of users who clicked on a specific link or had a specific interaction in an email or on a website.
    • Scroll Depth: Indicates how far users scroll down a page, helping to understand whether they are reading the content.
  • User Attitudes - these metrics provide insights into how users interact with a product and the challenges they encounter. These metrics are crucial for usability and can be collected using analytical tools, such as:

    • Customer Satisfaction Score (CSAT) - measures customer satisfaction. Researchers can ask any question, from a single question to a full survey. Results are measured in percentages.
    • Net Promoter Score (NPS) - determines customer loyalty by asking, "How likely are you to recommend this company/product/service to a friend or colleague?"
    • System Usability Scale (SUS) - consists of a questionnaire with five response options for respondents, from "strongly agree" to "strongly disagree." Used for comparing different user interfaces and monitoring usability changes during product design.

KPI vs. UX metrics

Understanding the difference between Key Performance Indicators (KPIs) and User Experience (UX) metrics is crucial. They are often confused, but their distinction is significant when it comes to acquiring and utilizing data for the benefit of a company.

KPI vs. Ux metrics

How to choose metrics for Your project?

There are no universal metrics that fit every project. Therefore, before selecting metrics, it's important to understand the organization's business model. It's also essential to connect these metrics to project decisions to monitor changes over time and evaluate whether they align with expectations. Data alone doesn't explain why something is happening, which is why qualitative research, such as user interviews, is necessary to understand the causes. Combining UX metrics with qualitative research helps paint a fuller picture of how a product or service functions.



UX metrics are crucial in designing and improving products and services. They help understand how users perceive and interact with offerings. Thanks to these metrics, designers can focus on enhancing user satisfaction and efficiency, identify areas for improvement, and make informed design decisions. This leads to the creation of more intuitive, useful, and satisfying user experiences, ultimately fostering greater customer loyalty and business success.