Convert CSV to Excel
Free · no signup · no watermark · runs in your browser · batch up to 20 files
Drop your CSV files here
or click to choose — up to 20 at once
Select CSV fileThis runs entirely in your browser. The file never leaves your machine and nothing is uploaded. Need test files? Try our free sample files.
This free CSV to Excel converter turns your .csv files into .xlsx files. CSV is what spreadsheets and databases export, and it carries no types or structure — everything arrives as flat text.
This conversion runs entirely in your browser. The file is never uploaded, which makes it instant, private and usable on work files you would not want to send to a stranger's server.
How to convert CSV to Excel
- Drop your CSV files onto the box above, or click it to choose from your computer. Up to 20 at once.
- The conversion starts as soon as the file is read — there is nothing to configure.
- Download each converted file, or pick them up one by one from the list.
What changes when you convert CSV to Excel
Both formats can represent the same content here, so nothing meaningful is lost. Expect the file size to change, since CSV and Excel compress differently.
CSV and Excel compared
| CSV | Excel | |
|---|---|---|
| Full name | Comma-Separated Values | Microsoft Excel Workbook |
| Extension | .csv | .xlsx, .xls |
| MIME type | text/csv | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
CSV: The lowest common denominator for tabular data: every spreadsheet and database reads it. It carries no types, so everything arrives as text, and quoting rules are where most import bugs live.
Excel: What most business data actually lives in. Carries types, formulas and multiple sheets, none of which survive a trip through CSV — which is exactly why people need to convert between them rather than just renaming the file.
Frequently asked questions
How do I convert CSV to Excel?
Drop your .csv file onto the box on this page and the .xlsx file is ready to download in a second or two. There is no signup, no email, no watermark and no file limit beyond what your browser can hold in memory.
Is this CSV to Excel converter free?
Yes, completely, with no account, no trial and no watermark on the output. We are a consultancy and these tools exist because we needed them ourselves; there is nothing to buy on this page.
Are my files uploaded anywhere?
No. This conversion runs entirely in your browser using JavaScript, so the file never leaves your computer. You can disconnect from the network after the page loads and it will still work.
Will converting to Excel reduce the quality?
Both formats can represent the same content here, so nothing meaningful is lost. Expect the file size to change, since CSV and Excel compress differently.
Can I convert several CSV files at once?
Yes, up to 20 files in one go. Drop them all onto the box together and each one appears in the results list with its own download button.
Found a problem, or something that could be better? We read every message and we fix things quickly.
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