Public libraries, as well as academic and school libraries, provide value, support and stability to their communities. Below please find calculators for return on investment and inflation's impact on your funding as well as impact and value studies and reports from national, state and local groups. These materials may help you define the financial support and community development you bring to your community.
- Return on Investment for Public Libraries Library Research Service compilation of individual library reports, related calculators and articles.
- Library Individualized Return on Investment Calculator A calculator from the Library of Michigan that allows a patron to select the resources they typically use at their library to see the full value of their library services.
- Library Inflation Calculator A calculator from the State Library of North Carolina that shows the impact of inflation on library funding. Select a historic year and input a historic $ value (could be state aid, local revenue, any money related to running a library) and then input current day $ to show the percentage decline in value of the current funding. Updated annually.