Abstract: A computing system performs a column adjustment process. The column adjustment process uses multiple threads to determine overall maximum column widths for each column in a set of target columns in a spreadsheet table. For each of the target columns, the overall maximum column width for the target column is based on the width of the widest textual representation of a value in any cell in the column. The set of target columns includes at least one column. The computing system then reflows the spreadsheet table such that each column in the set of target columns has a width based on the overall maximum column width for the column. A similar process is performed to adjust the height of rows.