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The files

Drop .xlsx or .csv files here, as many as you like They are read in this tab, in the order shown below.

    How it works

    COMBINE merges several .xlsx and .csv files. Stack every row into one sheet with the columns matched by heading and a column saying where each row came from, or keep each sheet as its own tab in one workbook. Dates stay dates and formulas keep their results. It saves a new .xlsx or .csv, made in this tab without uploading anything.

    Doing this often? OBSCURA Research opens the combined workbook as a data set and runs the statistics on it, with tables saved to Word. On its own, US$2 a month; with everything else, US$5 a month or US$48 a year. 7 days free.