Drop file here. 150 MB maximum file size.
A CSV is a comma-separated value file commonly used by spreadsheets such as Microsoft Excel or OpenOffice Calc. It contains comma-separated data sets, with each new line of the CSV representing a new data base line and each data base line consisting of one or more fields separated by a comma. Often CSV files are opened by spreadsheets to be organized into cells or used to transfer data between databases.
An XLSX file is a spreadsheet created by Microsoft Excel or another spreadsheet program, such as OpenOffice Calc or Apple Numbers. Data are stored in worksheets, which contain cells arranged in a grid of rows and columns, and may also contain tables, mathematical functions, styles and formatting. XLSX files are commonly used to store financial data and backup simple or complex mathematical models.
Access powerful and secure free online CSV tools to convert, view, edit, merge, split, and compare CSV files β all without installing any software. Our tools support the .CSV (Comma Separated Values File) file extension and run smoothly in any modern browser.
Select a tool below to explore features and manage your CSV files directly from your device with ease.
Chose or drag & drop your CSV file, click Convert to XLSX, and download the XLSX file. No registration needed.
Yes, all uploads are encrypted. Your files are auto-deleted after 24 hours.
Yes, our converter retains layout, fonts, and images as accurately as possible.
Fileproinfo converter engine works fast. You can convert CSV to XLSX in a few seconds to couple of minutes for large size files with complex structure.
FileProInfo support manay file formats that allow you to convert CSV to 100s of file formats, without any limit, registration and downloading, 100% free and online CSV converter.
All converters in this list are manually verified & 100% free and working properly, however you must use these apps according to their respective terms & conditions.
This tool and page updated at: 12-Apr-2025
About FileProInfo: FileProInfo is a trusted platform dedicated to file formats and software programs. We provide accurate technical details, easy-to-use navigation, and advanced search capabilities to help users explore, manage, and convert file types efficiently.
Listed file converters are from the wide range of online file converter.
These are the most polular file/document converters based on the user's review and usage on the FileProInfo.