Convert CSV to XLSX
Choose file to convert
Drop files here. 100 MB maximum file size or Sign Up
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.
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 | 🔵 .csv The .csv (Comma-Separated Values) format is a plain text format used for representing tabular data. Each line in the file corresponds to a row in the table, and columns in a row are separated by commas. This format is widely supported by many applications, including spreadsheet and database software. It's commonly used for exchanging data between different programs and for exporting and importing large amounts of data due to its simplicity and wide compatibility. |
| Technical details | 🔵 The `.csv` (Comma-Separated Values) format is a simple text format for tabular data, with each line representing a table row and fields separated by a delimiter, typically a comma, though alternatives like semicolons or tabs are also used. As a plain text format, it's universally compatible and easy to edit. The structure consists of delimited rows and fields without a standard schema, treating all data as strings, with interpretation dependent on the importing application. CSV files may include optional headers and support various text encodings like UTF-8 and ASCII. Special handling is needed for fields containing delimiters, usually by enclosing them in quotes and escaping internal quotation marks. Due to its simplicity and flexibility, CSV is favored for basic data exchange and import/export tasks across different programs, despite not being suitable for complex or relational data structures. Its broad compatibility with common software, including spreadsheet and database programs, maintains its popularity 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 007 and later versions. It's part of the Office Open XML specification and uses XML and ZIP compression for smaller file sizesThe .xlsx format supports complex spreadsheets with data, formulas, charts, pivot tables, and various formatting. It is more efficient and secure compared to the older .xls format and is widely used in business, education, and personal data organization. |
| Technical details | 🔵 Introduced in Excel 2007 as part of the Office Open XML (OOXML) standard, the `.xlsx` format is a notable advancement from the `.xls` format. It employs XML within a ZIP archive structure for improved data readability and efficient organization of elements like worksheets and shared strings. This format supports extensive datasets, allowing up to 1,048,576 rows and 16,384 columns per sheet, and includes advanced features like formulas, charts, pivot tables, and VBA macros. The use of shared XML files optimizes file size. `.xlsx` enhances cross-platform interoperability, includes security features like digital signatures and encryption, and has a macro-enabled `.xlsm` variant. Its XML structure minimizes file corruption risks and aids in data recovery. Widely compatible with modern spreadsheet software and older Excel versions, `.xlsx` has significantly enhanced Excel workbook functionality and efficiency, making it a preferred format for contemporary spreadsheet tasks. |
| Developer | 🔵 Microsoft |
| MIME type | 🔵 application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
FAQs on csv to xlsx Conversion
❓ How do I change csv to xlsx?
To get started, either pick a file you want to convert from csv and select it or drag and drop it into the conversion tool. Next, select the desired format that you wish to convert your file to. Once you have selected the format, click the "convert" button and wait for the tool to finish converting your file.
⏳ What is the estimated time it will take to convert csv to xlsx?
Typically, image conversions only take a few seconds, so you can expect a speedy conversion when changing csv to xlsx.
🛡️ Can I trust OnlineConvertFree to convert csv to xlsx securely?
Absolutely! We take your security seriously, and guarantee the protection of your uploaded and converted files. No one will have access to your information since we delete all files once the conversion process is complete. You can trust that all types of conversions, including csv to xlsx, are 100% safe on OnlineConvertFree.
📱 Is it possible to convert csv to xlsx without having to install any software?
Yes, that's right! OnlineConvertFree doesn't require any installation, which means that you can convert any files, including csv to xlsx, on your computer or mobile device, completely online.