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Spreadsheets
Excel and CSV, converted and split.
Excel to CSVTurn an XLSX, XLS or ODS workbook into CSV, one sheet or all of them.
CSV to ExcelTurn a CSV, TSV or ODS file into a real XLSX workbook.
Excel to JSONTurn a spreadsheet into JSON, using the first row as the keys.
JSON to ExcelTurn an array of objects into an XLSX workbook with a header row.
Excel to HTML TableTurn a spreadsheet into an HTML table you can paste into a page.
Excel to MarkdownTurn a spreadsheet into a Markdown table for a README or a wiki.
Split Excel SheetsSave every sheet in a workbook as its own file, packed into a zip.
Merge Excel FilesCombine several workbooks into one, keeping every sheet and naming clashes apart.
Split a CSVBreak a large CSV into smaller files of however many rows you choose.
Spreadsheet InfoSee every sheet in a workbook with its row and column count.
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Try a file type like “JPG” or a task like “count words”.
Good to know
Which spreadsheet files can I choose?
The spreadsheet tools accept XLSX, XLS, ODS, CSV and TSV. JSON to Excel expects a JSON array of objects, with one object per row.
How do I choose a worksheet?
Where a sheet-name option is shown, leave it empty for the first sheet, enter a sheet name, or enter * for all sheets. Multiple output files may be packed into a ZIP.
Are formulas and formatting preserved?
CSV, JSON and other table formats do not preserve a complete workbook. They export cell values and structure supported by the chosen format. Check formulas, dates and formatting in the downloaded file before replacing the original.