Excel to CSV Converter
Convert an Excel workbook to a plain CSV file that any tool can read — databases, scripts, data pipelines, statistics software and web apps. Upload your XLSX below and download the CSV in seconds.
Exports the first worksheet. Formulas are exported as their computed values.
CSV is the lingua franca of tabular data: no styling, no formulas, no macros — just rows and columns of values, which is exactly what most imports require.
How the Excel (XLSX) to CSV conversion works
Filembly opens your workbook and exports its first worksheet as comma-separated values. Formulas are exported as their last computed result rather than the formula text, dates are serialized in a standard form, and the output is UTF-8 with a byte-order mark so that accented characters open correctly when the CSV is loaded back into Excel.
How to convert Excel (XLSX) to CSV
- Upload your .xlsx file above.
- Confirm CSV as the destination format.
- Click Convert.
- Download the CSV and import it anywhere.
Limitations to know about
- Only the first worksheet is exported. If your workbook has multiple sheets, save the one you need as its own file first.
- Formatting, charts, merged cells, comments and macros are not representable in CSV and are dropped — CSV holds values only.
- Formulas export as their computed values; the formulas themselves are not preserved.
Privacy and security
Your file is uploaded over HTTPS, converted entirely in memory and streamed straight back to your browser. It is never written to disk, never logged and never retained after the conversion — there is nothing to delete because nothing is stored. Files are validated by extension, type and content signature, and uploads are never executed. Read more in our privacy policy.
Frequently asked questions
What happens to my formulas?
Each formula cell exports its last calculated value — the number or text you see in Excel — not the formula expression. CSV has no concept of formulas, so this is the standard behavior of every converter, including Excel's own Save As CSV.
My workbook has several sheets. Which one is converted?
The first worksheet in the workbook. If you need a different sheet, move it to the first position or copy it into a new workbook before converting.
Will special characters (é, ü, 中文) survive?
Yes — the CSV is written as UTF-8 with a byte-order mark (BOM), which is the encoding Excel itself expects when re-opening CSVs, so international text round-trips correctly.