Is this converter free to use?

Yes, this converter is completely free to use with no limits. Convert as many CSV files to XLSX as you need, with no file size restrictions or waiting periods.

Your files are temporarily uploaded to secure cloud storage for conversion, then automatically deleted immediately after processing. Files are encrypted in transit and at rest, and are never accessed by humans or used for any purpose other than conversion.

What is the file size limit?

There are no file size limits. Convert CSV files of any size to XLSX format. Larger files may take longer to process.

Do I need to create an account?

No account required for conversions. Simply upload your file and convert it. Creating a free account unlocks additional features like saving converted files to your workspace.

Can I convert multiple files at once?

Yes! You can convert multiple CSV files to XLSX simultaneously. All files are processed in parallel for faster conversion with no limits on the number of files.

Convert CSV to Excel

Convert your csv files to excel format with our free online converter. No installation required.

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Click anywhere to select filesor drag and drop files here

Accepts CSV files

Trusted by over 60,000 every month

How to convert CSV to Excel

Upload your CSV files using drag-and-drop or the file picker
Select multiple files at once or drag a batch of files. All files will be converted simultaneously with no file size limits.
Preview your data before conversion to verify the file contents
Check that your CSV data is correctly parsed and ready for conversion.
Wait for the secure cloud-based conversion to complete
Files are encrypted in transit and automatically deleted after conversion. Processing typically takes seconds.
Download your converted Excel files individually or as a ZIP
Click the download button for each file, or download all converted files at once.
View or edit the converted Excel files directly in our viewer
After conversion, click "View" to open the file in our interactive data viewer for further analysis.
Process hundreds of files in a single batch for maximum efficiency
Our converter handles large batches efficiently, saving you time compared to converting files one by one.

Converter Features

Fast conversion

Convert your csv files to excel in seconds, even with large datasets

Batch processing

Upload and convert hundreds of files at once with no file size limitations

Downloadable results

Get all your converted files immediately after conversion

Data integrity

Preserve your data structure and types during conversion with high-fidelity transformations

Format optimization

Automatically optimize output files for size and performance based on the target format

No code required

Convert files without writing a single line of code, perfect for data analysts and business users

How to convert CSV to Excel in Python

First, we need to install pandas

pip install pandas

Then we can load the csv file into a dataframe

df = pd.read_csv('path/to/file.csv')

Finally, we can export the dataframe to the xlsx format

df.to_excel('path/to/file.xlsx', index=False)

How to convert CSV to Excel using DuckDB

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