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Documents converter

XLSX to CSV

Convert an Excel spreadsheet to CSV — perfect for imports, scripting and data pipelines.

Runs in your browser

XLSX, XLSMCSV100% local · no upload

Guide

How to convert xlsx to csv

Pick your spreadsheet
Select an .xlsx or .xlsm workbook (up to 50 MB).
Convert the first sheet
The active (first) worksheet is exported as UTF-8 CSV with a BOM for Excel compatibility.
Download the CSV
Use it in scripts, imports, databases or analytics tools.

TipCSV holds a single sheet — only the first worksheet is exported.

Format details

Input formats: XLSX, XLSM
Output format: CSV
Privacy: No upload · processed locally

Frequently asked questions

Which sheet is converted?

The first worksheet in the workbook. If your data is on another sheet, move it first or use a dedicated spreadsheet app.

What about multiple sheets?

Only one sheet becomes CSV (CSV cannot hold multiple sheets). A notice is shown when the workbook contains extra sheets.

Will Excel open the CSV correctly?

Yes — the file includes a UTF-8 BOM so Excel shows characters such as CJK and accents correctly.

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