The number of documents that fit inside a bankers box depends on the type of paper, use of file folders and spacers, and how densely packed the contents are. On average, a standard bankers box (12″ x 15″ x 10″) holds around 2,200 to 2,500 sheets of paper. You can multiply this estimate by the number of boxes you have to gauge the total documents to scan.
A long bankers box (24″ x 15″ x 10″), often called a transfer file box, can store approximately 4,500 to 5,000 documents.