What Excel to CSV Converter helps you do

Excel workbooks are convenient to edit but awkward to diff, import, or commit. This tool opens an .xlsx, .xlsm, or .xls workbook in the browser, lets you pick a worksheet, and exports the displayed cell values as CSV. It is the quickest way to turn one sheet into a file a script, database or version-controlled repository can consume.

The workbook is parsed and converted entirely in your browser. The file is not uploaded to Haivix, and macros are never executed.

How it works

The workbook is parsed by a JavaScript spreadsheet library and the chosen worksheet is converted into a grid of cell values. Each row is serialized with the selected delimiter, quoting values that contain the delimiter, quotes or line breaks. Formulas are read as their cached values; the CSV does not preserve the formula or the cell formatting.

How to use Excel to CSV Converter

Drop an Excel workbook onto the upload area and wait for the worksheet list.
Choose the worksheet, delimiter, and whether to add a UTF-8 BOM for Excel compatibility.
Select Convert to CSV, then open the downloaded file in your editor or import it elsewhere.
Compare the row count with the sheet if the file is going into a database.

When to use it

Move one worksheet into a database, script, or version-controlled repository.
Share table data with a tool that accepts CSV but not Excel files.
Extract a clean copy of a report without macros or workbook metadata.
Commit a data table to git in a reviewable text form.
Feed one sheet into an import that rejects XLSX.
Keep a plain-text copy of a workbook that may change later.

When not to use it

Do not export a sheet with merged cells and expect the merged layout to survive.
Do not rely on the CSV for formulas or cell styling.
Do not export dates or leading-zero identifiers without formatting them as text in Excel first.

Example

A pricing workbook has a cover sheet, a rate table and a notes sheet. Only the rate table is exported with comma delimiters and no BOM, and the row count matches the sheet. The CSV is committed next to the script that loads it, while the original workbook stays in the shared drive.

What you can do with Excel to CSV Converter

Open .xlsx, .xlsm and .xls workbooks without executing macros.
Choose one worksheet to export.
Pick the output delimiter.
Add a UTF-8 BOM for better Excel compatibility.
Export the displayed cell values, including cached formulas.
Download the CSV without uploading the workbook.

Example: export one sheet for a repository

Drop the workbook and pick the worksheet that holds the data. A cover sheet or a chart sheet is not useful for an import.

Choose the delimiter the destination expects and decide whether the BOM is needed. The BOM helps some Excel versions recognize UTF-8, but scripts may prefer a plain file.

Download the CSV, open it in the target tool, and compare the row count with the sheet before committing it.

What to know before you start

Only one worksheet is exported at a time.
Formulas export as their last calculated values, and cell formatting is not preserved.
Very large workbooks are limited by available browser memory.
Charts, images and comments are not exported.
Merged cells appear only as their top-left value.

Common mistakes

Exporting the wrong worksheet because the first tab is a cover page.
Letting Excel convert a code such as 007 to 7 before the export.
Adding a BOM and then treating the first header as having an invisible character.
Assuming formulas are exported instead of their cached values.
Forgetting that merged cells collapse to a single value in the top-left cell.

Troubleshooting

If a leading zero disappears, format the column as text in Excel and save before exporting.

If dates change format, the workbook stores them as date values; format the display string first or accept the normalized date.

If the first column looks wrong in a script, remove the BOM or strip it before parsing.

If the file is empty, the chosen sheet may contain only formulas without cached values. Recalculate and save in Excel.

If the workbook will not open, it may be encrypted, damaged or beyond the size cap.

If the CSV opens with a stray character before the first header, a UTF-8 BOM was included. Re-export without it, or strip the BOM in the importing tool before parsing the header row.

Excel to CSV Converter