Convert XLSX to CSV

Q: Is the table structure preserved?

CSV is a simple text format; it stores only the data itself (rows and columns). Formulas, cell formatting, and colors are not transferred because the CSV standard does not support this.

How to convert XLSX table to CSV?

The tool extracts data from Excel files and saves it in delimited text format. This is convenient for further import into databases or program processing:

Select file:Drag the XLSX table into the browser window.
Start processing: The script will parse the table structure.
Download CSV:Get the finished text file as output.

Advantages of local conversion (Client-Side)

When working with financial reports or customer databases, confidentiality is a top priority. Our converter solves this problem technically, and not in words:

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Data security: Files are not uploaded to the cloud. Parsing XLSX occurs exclusively in the RAM of your device. This prevents the leakage of trade secrets.
Working with large files: Since there is no need to transfer data over the network, the conversion speed depends only on your processor, and not on the width of the Internet channel.
Clean format: The output is standard CSV (Comma-Separated Values) in UTF-8 encoding, ready for use on any system.

Frequently asked questions

Is the table structure preserved?

CSV is a simple text format, it stores only the data itself (rows and columns). Formulas, cell formatting, and colors are not transferred because the CSV standard does not support this.

Are my data definitely not going to get on the Internet?

Yes. WebAssembly technology allows you to run the converter code directly in your browser. There is no network activity - you can even turn off the Internet before starting the conversion, and everything will still work.

Are there any file size limits?

There are no hard limits. It all depends on the amount of random access memory (RAM) of your device. Modern browsers can easily handle tables with tens of thousands of rows.