Abstract: A method and system for locating field breaks within input data is provided. In a preferred embodiment, a software facility locates field breaks within input data. The facility first receives input data made of a large number of rows of text. The facility then selects a group of the received rows of text to analyze. The facility identifies field breaks within the input data by analyzing the selected group of rows of text. The facility preferably analyzes the selected rows by counting the number of substantive characters in each column of the selected rows. The facility then uses the count to determine which columns have less than a field-break threshold of substantive characters. The facility locates one field break within each series of columns that have less than the field-break threshold of substantive characters.