Free tools · no uploads · no sign-up

Free online spreadsheet tools

Prepare tabular data for imports, reporting and sharing. Choose a conversion or cleanup task below and process your files on your own device.

Choose an exchange format

Use Excel to CSV for a plain table, or CSV to Excel for a workbook. CSV cannot retain multiple sheets, cell styling or workbook features. Check dates, leading zeros and long identifiers after conversion.

Clean before combining

Use Clean spreadsheet to trim spaces and remove empty or duplicate rows. Before merging files, check that their column headings describe the same fields. Keep a source copy so you can review any removed rows.

Turn rows into JSON

Use Excel to JSON or CSV to JSON for data interchange. The first row supplies field names, so use clear, unique headings and inspect the output before importing it into another application.

Choose a spreadsheet tool

Popular tasks

Built by Faheem Riaz. Read how file privacy works or report a problem.