CSV to XLSX Converter

Our API allows custom integrations with your app. You pay only for what you actually use, and there are huge discounts for high-volume customers. We provide a lot of handy features such as full Amazon S3 integration. Check out the CloudConvert API.

Convert CSV to XLSX

Use this CSV to XLSX Spreadsheet converter tool to quickly convert your CSV files to XLSX in bulk.

Select Files to Convert
Or drag and drop files here
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How to use the CSV to XLSX File Converter Tool

The CSV to XLSX file converter is free, simple, fast, privacy-focused, requires no email address to use, and does not use watermarks. Convert your files in bulk while never having to worry about your privacy. Your files are converted in the web browser without our server ever knowing about them, making ConvertSimple.com’s file converter the most privacy-concious tool on the web.

1. Upload your CSV files by dragging and dropping them into the box at the top, or by clicking Select Files to Convert.
2. You can change what type of file you want to convert your CSV files to by changing the Convert to option near the top of the page.
3. Click the Convert button to begin the bulk CSV to XLSX conversion.
4. The files will be converted. You can download the converted files individually or click Download All to download a ZIP file with all of your converted XLSX files.
5. Your files are secure. ConvertSimple’s file converter does not send your files to our servers for conversion, the process is done completely in your web browser. That’s what makes ConvertSimple’s file converter the safest and fastest file converter out there.

Conversion library used: ImageMagick

CSV Format

Name	CSV
Full form name	Comma-Separated Values
File extension	.csv
Type of format	Spreadsheet
MIME type	text/csv, application/csv, application/x-csv, text/comma-separated-values, text/x-csv, text/x-comma-separated-values

XLSX Format

Name	XLSX
Full form name	Microsoft Excel Open XML Spreadsheet
File extension	.xlsx
Type of format	Spreadsheet
MIME type	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

CSV to XLSX Converter

CloudConvert is an online document and spreadsheet converter. Amongst many others, we support PDF, XLSX, XLS, CSV, ODS. Thanks to our advanced conversion technology the quality of the output will be as good as if the file was saved through the latest Microsoft Office 2021 suite.

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CSV

CSV is a file extension that can store comma separated numeric and alpha numeric data in simple text format. CSV is used while data transferring and it can contain records contained with a lot of fields. Each record has same number of fields.

XLSX

XLSX is a proprietary spreadsheet file of Microsoft Excel that contains data. It contains data in rows or columns as well as charts. XLSX supports several mathematical functions also. It uses Open XML standard for containing data. It supports MS Office 2007 and above versions.

+200 Formats Supported

CloudConvert is your universal app for file conversions. We support nearly all audio, video, document, ebook, archive, image, spreadsheet, and presentation formats. Plus, you can use our online tool without downloading any software.

Data Security

CloudConvert has been trusted by our users and customers since its founding in 2012. No one except you will ever have access to your files. We earn money by selling access to our API, not by selling your data. Read more about that in our Privacy Policy.

High-Quality Conversions

Besides using open source software under the hood, we’ve partnered with various software vendors to provide the best possible results. Most conversion types can be adjusted to your needs such as setting the quality and many other options.

Powerful API

Our API allows custom integrations with your app. You pay only for what you actually use, and there are huge discounts for high-volume customers. We provide a lot of handy features such as full Amazon S3 integration. Check out the CloudConvert API.

Convert CSV to EXCEL Online

Use CSV to Excel converter to export CSV files to Excel format online. Our free conversion service will parse the content of the original CSV file to the smallest detail and recreate the content in the target Excel format.

You can use the CSV to Excel Converter completely free, at any time, and from any device.

CSV to Excel Converter Online

Converting from CSV to Excel format is one of the most common operations. We often need both of the features that CSV and Excel formats provide. CSV and Excel formats complement each other in some cases.

Convert CSV file to Excel Online

To convert CSV to Excel format, simply drag and drop a CSV file into the data upload area, specify the conversion options, click the ‘Convert’ button, and get your output Excel file in seconds.

Free CSV to Excel Converter is based on Aspose software products, which are widely used around the world for programmatic processing of CSV and Excel files with high speed and professional quality of the result.

How to convert CSV to Excel

1. Upload CSV files to convert them to Excel format online.
2. Specify CSV to Excel conversion options.
3. Click the button to convert CSV to Excel online.
4. Download the result in Excel format for viewing.
5. You can send download link by e-mail, if you would like to get the results later.