Use the calculator below to calculate just exactly what the library is worth based on what you borrow. Value of Your Library Use Input Your Use Library Materials & Services Value of Your Use Adult Books Borrowed $ YA Books Borrowed $ Childrens Books Borrowed $ Audiobooks Borrowed $ Interlibrary Loan Requests $ eBooks Downloaded $ Magazines Read $ Newspapers Read $ Movies Borrowed $ CDs Borrowed $ Music Downloaded $ Meeting Room Use (per hour) $ Adult Program Attended $ Young Adult Program Attended $ Childrens Program Attended $ Computer Use (per hour) $ Database Searches $ Reference Assistance $ $ This worksheet has been adapted from the Massachusetts Library Association and Chelmsford Library. How the values were calculated.