XLS to CSV Converter

Select files for conversion or just drag and drop them to the upload area

How to convert XLS files to CSV online?

Step 1.

Upload XLS-file

Click "Choose File" button to select a xls file on your computer. XLS file size can be up to 50 Mb.
Step 2.

Convert XLS to CSV

Click "Convert" button to start conversion.
Step 3.

Download your CSV

Let the file convert and you can download your CSV file right afterwards.

Information about XLS and CSV file formats

Name XLS CSV
Full name XLS - Microsoft Excel Binary File Format CSV - Comma-Separated Values
File extension .xls .csv
MIME type application/vnd.ms-excel text/csv
Developed by Microsoft Informational RFC
Type of format Spreadsheet multi-platform, serial data streams
Description Microsoft Excel up until 2007 version used a proprietary binary file format called Excel Binary File Format (.XLS) as its primary format. Excel 2007 uses Office Open XML as its primary file format, an XML-based format that followed after a previous XML-based format called "XML Spreadsheet". In computing, a comma-separated values (CSV) file stores tabular data (numbers and text) in plain text. Each line of the file is a data record. Each record consists of one or more fields, separated by commas. The use of the comma as a field separator is the source of the name for this file format.
Technical details OpenOffice.org has created documentation of the Excel format. Since then Microsoft made the Excel binary format specification available to freely download. The CSV file format is not standardized. The basic idea of separating fields with a comma is clear, but that idea gets complicated when the field data may also contain commas or even embedded line-breaks. CSV implementations may not handle such field data, or they may use quotation marks to surround the field.
Associated programs Microsoft Office, LibreOffice, Kingsoft Office, Google Docs. Microsoft Excel, LibreOffice Calc
Wiki https://en.wikipedia.org/wiki/Microsoft_Excel#File_formats https://en.wikipedia.org/wiki/Comma-separated_values