Online Excel to CSV Converter

Convert Excel to CSV – Supports multiple files and sheets

How to Use
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Batch Convert Excel to CSV

Convert Excel files to CSV without opening them. Handle multiple files or specific sheets at once, all processed securely in your browser. Free and no registration required.

How to Convert Excel to CSV
STEP1

Upload Excel Files

Drag & drop your Excel files or upload them using the file selection button.

You can upload multiple files at once.

Screen for uploading Excel files
STEP2

Preview & Filter

Uploaded files will be listed as 'Filename_Sheetname.csv'.

Filter sheets by entering keywords or remove unwanted sheets using the ✖ button.

Preview screen with sheet name filtering
STEP3

Convert to CSV & Download

Files displayed in the preview will be converted to CSV.

Single files download as CSV, while multiple files download as a ZIP archive. All CSV files are output in UTF-8 encoding.

CSV download screen
Key Features

Supports batch conversion of multiple Excel files

Convert multiple sheets to CSV at once

Fast & Secure: Files are not sent to a server

Free & No Registration Required: Use instantly

User-friendly preview function

Correctly extracts and converts calculation results of formulas and functions (e.g., HYPERLINK)

Ideal For

Batch convert multiple Excel files or sheets to CSV in one go

Prepare clean CSV files for database and system imports

Process spreadsheet data quickly without opening Excel software

Convert spreadsheets on any device without software installation

Frequently Asked Questions (FAQ)
Are converted files saved on the server?
No. Files are never sent to a server; all processing occurs directly in your browser. You can use the tool with confidence.
Will character encoding issues be avoided?
Yes. Files are saved in UTF-8 with BOM, which helps prevent character encoding issues when opened in Excel.
Does it support Excel files with multiple sheets?
Yes. Each sheet is converted into a separate CSV file, clearly labeled with both the original filename and sheet name.
Can I use it on smartphones and tablets?
Yes. It works on PCs, as well as any device with a web browser.
What will be the filename after conversion?
Files will be named 'Filename_Sheetname.csv'. Special characters are automatically replaced with underscores.
How are cells containing functions like HYPERLINK output?
Even for cells with functions, the displayed string, calculation result, or target URL is prioritized. This prevents the issue of cells becoming empty when exported to CSV.
Why Use This Tool?

Convert Excel files to CSV in bulk without opening each one. Filter by sheet name, and download everything at once.

Try it now — convert Excel to CSV in seconds.

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