The Customer Happiness Index (CHI) is a metric used to measure customer satisfaction and loyalty by quantifying how happy customers are with a company's products, services, and overall experience. The CHI is typically calculated using a combination of surveys, feedback, and customer analytics, and is used to track changes in customer satisfaction over time.

The CHI can help companies to identify areas where they need to improve the customer experience, and can also help to identify areas where they are excelling. The index can be used to benchmark against industry standards and competitors, and can be a useful tool for evaluating the effectiveness of customer experience initiatives.

The CHI can be calculated in a variety of ways, depending on the company's goals and customer segments. Some common metrics that may be included in a CHI calculation include:

• Net Promoter Score (NPS): A metric that measures how likely customers are to recommend a company's products or services to others.
• Customer Satisfaction Score (CSAT): A metric that measures how satisfied customers are with a specific interaction or experience.
• Customer Effort Score (CES): A metric that measures how easy it is for customers to do business with a company.

By calculating the CHI regularly and using the results to inform business decisions, companies can improve the customer experience, build customer loyalty, and drive business growth.