Measuring customer satisfaction and loyalty is crucial to the success of any company. Among the many metrics available, the Net Promoter Score (NPS) stands out as one of the most reliable and widely used in User Experience (UX), Customer Experience (CX) and Employee Experience (EX) to understand brand perception and loyalty. In this article we look in detail at what NPS is, how it is calculated and why it is a key metric for improving the experience of users and customers.
What is the Net Promoter Score (NPS)
The Net Promoter Score (NPS) was introduced by Fred Reichheld in 2003 in an article published in Harvard Business Review. This metric gives a key indicator of customer satisfaction and loyalty through a single question:
“On a scale of 0 to 10, how likely are you to recommend [company/product/service] to a friend or colleague?”
Responses are divided into three categories:
- Promoters (score 9-10): enthusiastic customers who are likely to buy again and recommend the company.
- Passives (score 7-8): satisfied customers who are not loyal enough to actively promote the brand.
- Detractors (score 0-6): dissatisfied customers who may harm the company’s reputation through negative word of mouth.
How to calculate the Net Promoter Score
Calculating NPS is simple and immediate:
- Calculate the percentage of promoters: (Number of Promoters / Total number of respondents) × 100.
- Calculate the percentage of detractors: (Number of Detractors / Total number of respondents) × 100.
- Apply the formula:NPS = % Promoters – % Detractors
The resulting score ranges from -100 to +100:
- A positive value means there are more promoters than detractors, a sign of a solid customer base.
- A negative value suggests a prevalence of dissatisfied customers and a significant reputational risk.
For example, if a company has 60% promoters and 20% detractors, its NPS will be 40.
Why NPS matters
It provides a clear, immediate metric
NPS is a direct tool that gives a quick indication of customer loyalty.
It predicts business growth
According to studies by Qualtrics, companies with a high NPS tend to grow faster than those with low scores, thanks to the positive word of mouth generated by promoters.
It guides Customer Experience (CX) improvement
Monitoring NPS and collecting qualitative feedback helps companies identify pain points in the customer journey and optimize the experience.
It supports strategic decisions
A low NPS signals the need for improvements in products, services or customer support, providing concrete input for targeted action.
Conclusions
The Net Promoter Score (NPS) is an essential metric for assessing customer loyalty and optimizing the user experience. Thanks to its simplicity and its ability to predict business growth, it is a powerful tool for improving Customer Experience (CX) and User Experience (UX). However, to get the most out of it, you need to collect qualitative data, segment the results and act on feedback to achieve concrete, lasting improvements.
If you want to improve your product’s user experience and implement data-driven strategies, we can help with targeted solutions.
