Online CSV to Excel Converter
Instantly convert your CSV data into Excel format. Paste, upload, and download your XLSX file.
Your CSV Data:
Excel Preview:
| name | age | city |
|---|---|---|
| John Doe | 30 | New York |
| Jane Smith | 25 | London |
| Peter Jones | 42 | Paris |
Why Use Our Converter?
Lightning Fast
Client-side processing for instant results. Your data stays private, always.
Secure & Private
All conversions happen in your browser. No data is sent to our servers.
Dead Simple
Clean UI, no fuss. Just paste or upload your CSV and convert to Excel.
CSV and Excel: Your Questions Answered (FAQ)
About CSV Files
What does CSV stand for?
CSV stands for Comma Separated Values. It's a plain text file format used to store tabular data (numbers and text in plain textual form).
What is a CSV file used for?
CSV files are commonly used for exchanging data between different applications. For example, you might export data from a database or a spreadsheet program (like Microsoft Excel, Google Sheets) into a CSV file, and then import that data into another program.
What is a delimiter in a CSV file?
A delimiter is a character that separates the values (fields) in each row of a CSV file. The most common delimiter is a comma (,), but other delimiters like semicolons (;), tabs (\t), or pipes (|) can also be used.
Are CSV files human-readable?
Yes, because they are plain text, you can open and view CSV files with a simple text editor. However, for large CSV files, spreadsheet software provides a more structured view.
About Excel Format
What is Excel (XLSX) format?
Excel is a spreadsheet program developed by Microsoft. XLSX is Excel's file format based on Open XML standards, introduced in Excel 2007. It's a binary format that can store various data types, formulas, charts, and visual formatting.
What's the difference between XLS and XLSX?
XLS is the older Excel binary format used in versions prior to Excel 2007. XLSX is the newer XML-based format which is more open, typically creates smaller file sizes, and is less prone to corruption. Our converter generates XLSX files.
Can Excel files contain multiple sheets?
Yes, Excel files can contain multiple worksheets. However, our basic converter currently creates a single sheet containing your CSV data.
What are the advantages of Excel over CSV?
Excel files can store formatting (colors, fonts, borders), formulas, multiple worksheets, charts and graphs, cell comments, and much more. CSV files are plain text and can only store the raw data values.
Converting CSV to Excel
Why convert CSV to Excel?
Converting CSV to Excel is useful when:
- You need to apply formatting or visualizations to your data.
- You want to leverage Excel's advanced analytical features and formulas.
- You're sharing data with colleagues who prefer Excel's familiar interface.
- You need to merge your CSV data with existing Excel spreadsheets.
How does this CSV to Excel converter work?
Our tool parses your CSV input (either pasted or from an uploaded file), creates an Excel workbook in memory, populates it with your data, and then generates a downloadable XLSX file. The first row of your CSV is automatically treated as the header row.
Is my data safe and private when using this tool?
Yes. All conversion processing is done directly in your web browser (client-side). Your CSV data is never sent to our servers, ensuring your data remains private and secure.
Can this tool handle large CSV files?
Since the processing is done in your browser, the ability to handle very large files depends on your browser's performance and available memory. For extremely large files (e.g., hundreds of thousands of rows), a dedicated desktop application might be more appropriate.
What if my CSV uses a delimiter other than a comma?
Currently, our simple converter primarily expects comma-separated values. For CSV files using other delimiters (like semicolons or tabs), the conversion might not work as expected. We plan to add options for specifying custom delimiters in the future.
Does the Excel file maintain my CSV's data types?
Our converter attempts to intelligently detect and preserve data types, converting numeric strings to numbers and recognizing dates where possible. This helps ensure your data is ready for calculations in Excel.
Can I convert Excel back to CSV using this site?
This specific page is for CSV to Excel conversion. We plan to launch a separate Excel to CSV converter tool soon! Check our footer for updates.