CSV output has unexpected commas or line breaks
Spreadsheet cells can contain commas, quotes, and multiline notes that need CSV escaping.
Open the downloaded CSV in a text editor or import wizard and keep quoted cells intact.
Use this tool
Prepare the input and run the tool
Choose a local .xlsx workbook. Result: Download one CSV or a ZIP of CSV files.
Choose a .xlsx workbook. Single-sheet workbooks download as CSV; multi-sheet workbooks download as a ZIP of CSV files.
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Excel to CSV output preview appears here.
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Tool guide
How to use Excel to CSV
Use this when another system accepts CSV but your source file is Excel. Multi-sheet workbooks are split into one CSV per sheet.
What this tool does
Upload XLSX and download CSV files, with multi-sheet workbooks packaged as a ZIP.
- Input
- Choose a local .xlsx workbook
- Output
- Download one CSV or a ZIP of CSV files
Tool advantages
- Runs in this page; the file or pasted data is not sent to a new app.
- Keeps the preview, report, and download in the same screen.
- Leaves you with an output you can copy, download, or check before using.
Step-by-step usage guide
- 1Choose the XLSX workbook.
- 2Check the first sheet preview.
- 3Download the CSV or ZIP output.
Common errors and fixes
Multi-sheet workbook becomes a ZIP
CSV is a single-table format, so each worksheet needs its own CSV file.
Use the ZIP output for multi-sheet workbooks and upload the sheet-specific CSV that matches your destination.
Leading zeros disappear in another spreadsheet app
CSV has no cell type, so apps may treat SKU, ZIP code, or ID columns as numbers.
Import the CSV as text columns in the destination app when identifiers must keep leading zeros.
When to use Excel to CSV
- You are checking files before an upload, import, share, or delivery.
- You want to confirm the result before sending it to another system.
- You need a copied result, downloaded file, or report that can be reviewed outside the page.
FAQ
What happens with multiple sheets?
Each sheet becomes a separate CSV inside a ZIP download.
Does this keep formulas?
The exported CSV contains displayed cell values, not workbook formulas.