The American Consumer Satisfaction Index (ACSI) was developed to provide information on satisfaction with the quality of products and services available to consumers. It was designed to measure the quality of economic output as a complement to traditional measures of the quantity of economic output.

The index reports scores on a 0-100 scale at the national level. It also produces indexes for 10 economic sectors, 43 industries (including e-commerce and e-business), and more than 200 companies and federal or local government agencies.