Choose your CSV
Select a .csv file from your computer or drag it into the upload area.
FREE · PRIVATE · NO ACCOUNT
Convert CSV to Excel
Turn your CSV files into clean Excel spreadsheets in seconds. Your files are processed in your browser and are not uploaded to our servers.
CSV to XLSX converter
Choose a CSV file to get started.
🔒 Your file stays on your device. Conversion happens locally in your browser.
✓ No registration✓ Free to use✓ Excel-compatible XLSX
SIMPLE BY DESIGN
How to convert CSV to Excel
Three quick steps — no software installation needed.
Convert the file
Click the convert button. Gitconvert45 reads your file locally in your browser.
Download Excel
Save your new .xlsx workbook and open it in Microsoft Excel or a compatible spreadsheet app.
MADE FOR EVERYDAY WORK
A straightforward CSV to XLSX tool
Quick conversion
Convert data in your browser without waiting for a server upload.
Privacy-first
Your selected file is processed locally and is not sent to Gitconvert45.
Excel workbook
Download an XLSX spreadsheet that works with Excel and many other spreadsheet apps.
Works in your browser
Use the tool on desktop or mobile without creating an account.
HELP CENTER
Frequently asked questions
Is Gitconvert45 free?
Yes. The converter is free to use and does not require an account.
Are my CSV files uploaded?
No. Conversion runs in your browser using a JavaScript spreadsheet library. Your file contents are not uploaded to our server. The library itself is loaded from a third-party CDN.
What is the difference between CSV and XLSX?
CSV is a plain-text format that stores values separated by delimiters. XLSX is an Excel workbook format that can store worksheets, formatting, and other spreadsheet features.
Can I convert large files?
The interface accepts CSV files up to 25 MB. Very large files may use significant memory and may run slowly on older devices.
Will the converted file preserve CSV formatting?
CSV files contain values, not rich spreadsheet formatting. The converter transfers the data into an XLSX worksheet; you can apply formatting in Excel afterward.
Your spreadsheet is a click away.
Convert a CSV file to Excel right in your browser.
Back to converter ↑