Want a Custom tool for Yourself?

Need a Custom Tool? We build custom tools that can save hours per employee per day.

Excel to CSV

Convert Excel to CSV quickly. Upload an XLSX file and download a CSV from the first sheet, perfect for imports, databases, and clean exports.

Excel to CSV

Result will appear here...

SIMILAR TOOLS


Last updated: May 19, 2026

Created by: Eon Tools Dev Team

Reviewed by: Bhabin Khadka


What this tool does

This tool converts an Excel spreadsheet into a CSV file, the plain-text table format that almost any system can read. Upload your .xlsx or .xls file and it pulls the data out as a clean CSV, ready to download. It runs in your browser, so your file is never uploaded.

How to use it

  1. Select your Excel file.
  2. Press Extract, and the tool reads the spreadsheet and builds the CSV.
  3. Download the .csv file. Reset clears the tool for another.

How it works

The tool reads your Excel workbook with the SheetJS library, takes the first sheet, and writes its cell values out as comma-separated text. The result is a standard CSV file. Everything happens on your device, so the spreadsheet never leaves your computer.

A worked example

If your Excel sheet holds this:

nameagecity
Alice30London
Bob25Paris

The tool turns it into this CSV:

name,age,city
Alice,30,London
Bob,25,Paris

The values land in the same order, separated by commas, with one line per row.

What carries over, and what does not

It is worth knowing exactly what survives the trip, because CSV is a deliberately simple format. What you keep is the data, the values in your cells, laid out as a plain table. What you lose is everything a CSV cannot hold: formatting and colours, formulas (a formula is replaced by the value it had worked out), charts, and any sheets beyond the first, since the tool converts that one. None of that is a flaw, it is the nature of CSV, and it is exactly why the format is so portable.

That portability is the whole point of converting. A CSV slips easily into databases, scripts, and other software that would choke on a full Excel file, which makes this the right move whenever a system asks you to import data rather than open a spreadsheet. To go the other way, CSV to Excel rebuilds a workbook, and the Excel Viewer lets you preview a spreadsheet first.

Questions people ask

Does it keep formatting and formulas?

No. CSV holds only values, so formatting and charts are dropped, and a formula is replaced by the result it had calculated. You get the data itself as plain text.

What happens with multiple sheets?

The tool converts the first sheet of the workbook. CSV files hold a single table, so only that one sheet's data goes into the result.

Why convert to CSV at all?

Because CSV is universally readable. Databases, scripts, and countless tools accept it for importing data, where a full Excel file would be harder to work with.

Is my file uploaded?

No. The conversion runs entirely in your browser, so your spreadsheet stays on your device.


Bhabin Khadka

Bhabin Khadka is a software engineer and graduate student at the University of New England with experience in backend development and scalable systems. He has a particular interest in file systems and the kinds of technical utilities that depend on dependable handling of structured data. At Eon Tools, he reviews file and document tools, as well as encode and decode tools.

Other Tools