Convert CSV to XLSX
Choose file to convert
You have the option to convert your csv file to xlsx, as well as a variety of other formats, using our free online converter.
How to convert csv to xlsx?
Step 1
Upload csv-file
You can select csv file you want to convert from your computer, Google Drive, Dropbox or simply drag and drop it onto the page.
Step 2
Select «to xlsx»
Choose xlsx or any of the other 200+ supported formats you'd like to convert to.
Step 3
Download your xlsx file
Please wait for the conversion to complete, then click on the download button to obtain your converted file in the xlsx format.
The security of your files is our priority
Understanding the importance of the security of our users' data, we have implemented a number of measures to ensure reliable file conversion without the risk of information leakage or privacy violations.
Data encryption
All information uploaded to our platform is SSL encrypted, ensuring privacy during transmission.
Safe storage
After the conversion is completed, the files are stored on secure servers for 24 hours and are automatically destroyed, excluding access by third parties.
Harmless scripts
Our file conversion tools are regularly tested for malicious code or vulnerabilities to eliminate the risk of a potential cyber attack.
Best tool to convert csv to xlsx
csv to xlsx Fast and easy
Simply drag and drop your csv files onto the webpage, and you'll be able to convert them to xlsx or over 250 different file formats, all without having to register, provide an email address, or include a watermark.
Secure csv to xlsx Conversion
As soon as you upload your csv files, we instantly delete them. Converted files are then deleted after 24 hours. Furthermore, we ensure that all file transfers are secure through advanced SSL encryption.
No Software Installation Required
You don't have to go through the hassle of installing any software. We handle all csv to xlsx conversions in the cloud, which means that none of your computer's resources will be used in the process.
Comma Separated Values File
| Extension | .csv |
| Category | 🔵 documents |
| Programs | 🔵 Microsoft Excel 🔵 Microsoft Works 🔵 Corel Quattro Pro 🔵 Apache OpenOffice 🔵 LibreOffice 🔵 Microsoft Notepad 🔵 Libre Office 🔵 MobiSystems OfficeSuite Pro 7 |
| Description | 🔵 The .csv (Comma-Separated Values) format is a simple text format used to represent tabular data. Each line in the file corresponds to a row in the table, with columns separated by commas. This format is widely supported by various applications, such as spreadsheet and database software. It is commonly utilized for transferring data between different programs, as well as for exporting and importing large volumes of data due to its ease of use and high compatibility. |
| Technical details | 🔵 The `.csv` (Comma-Separated Values) format is a straightforward text format used for tabular data. In this format, each line represents a row in the table, with fields separated by a delimiter. Typically, a comma is used as the delimiter, but semicolons or tabs can also be used. Being a plain text format, it is universally compatible and easy to edit. The structure of a csv file consists of rows and fields delimited by the chosen delimiter, without a standard schema. All data is treated as strings, with interpretation depending on the application importing the data. Optional headers can be included in `.csv` files, and various text encodings such as UTF-8 and ASCII are supported. When fields contain delimiters, they are usually enclosed in quotes and any internal quotation marks are escaped. Despite not being suitable for complex or relational data structures, the simplicity and flexibility of the `.csv` format make it popular for basic data exchange and import/export tasks across different programs. Its compatibility with common software, including spreadsheets and databases, ensures that it remains favored for straightforward data operations. |
| Developer | 🔵 Microsoft |
| MIME type | 🔵 text/comma-separated-values |
Office Open XML Document
| Extension | .xlsx |
| Category | 🔵 documents |
| Programs | 🔵 Microsoft Office 🔵 LibreOffice 🔵 Kingsoft Office 🔵 Google Docs |
| Main program | 🔵 Microsoft Office |
| Description | 🔵 .xlsx (Microsoft Excel Open XML Spreadsheet) The .xlsx format is the default file format for spreadsheets created in Microsoft Excel, starting with Excel 2007 and later versions. It is a part of the Office Open XML specification and utilizes XML and ZIP compression to reduce file sizes. The .xlsx format allows for the creation of complex spreadsheets containing data, formulas, charts, pivot tables, and various formatting options. It is more efficient and secure when compared to the older .xls format, and is widely utilized in business, education, and personal data management. |
| Technical details | 🔵 Introduced in Excel 2007 as part of the Office Open XML (OOXML) standard, the `.xlsx` format represents a significant advancement from the older `.xls` format. It utilizes XML within a ZIP archive structure to enhance data readability and efficiently organize elements such as worksheets and shared strings. This format can handle extensive datasets, supporting up to 1,048,576 rows and 16,384 columns per sheet. Additionally, it includes advanced features like formulas, charts, pivot tables, and VBA macros. The use of shared XML files helps optimize file size. `.xlsx` promotes cross-platform interoperability, integrates security features such as digital signatures and encryption, and even offers a macro-enabled `.xlsm` |
| Developer | 🔵 Microsoft |
| MIME type | 🔵 application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |