CSV to Excel Converter
Need to convert this file type? Drop it below — or drop any other file and we'll auto-switch. Outputs are auto-deleted after 2 hours; share links expire after 4.
Or paste a link to a file
Drop multiple images to combine them into one PDF, Word document, or PowerPoint presentation — or convert each image separately.
Drop
Drag your CSV file or click to browse.
Convert
XLSX is preselected, or pick a different format below.
Download
Get your file or share a 1-hour link.
Tested example ·
Arabic CSV: names, phone numbers and leading zeros
Two synthetic records retain Arabic names, codes 00123 and 00456, and phone numbers beginning with zero. The multiline note remains inside one cell. All cells are text, so convert calculation columns to numbers yourself in Excel.
Input size: 201 bytes; output: 5,042 bytes.
Reproduce this result
Download the UTF-8 CSV, upload it above, choose XLSX and convert. Open the result and compare the code, phone and note columns with the sample output.
This small example does not test every encoding or delimiter. UTF-8 and BOM-marked UTF-16 are supported; check the detected columns. Missing zeros in the original cannot be recovered.
Original synthetic test files, released under CC0 for reuse and redistribution.
Convert CSV to Excel online
Convert CSV to XLSX when plain-text data needs to become a real spreadsheet — for reviewing in Excel or Google Sheets, adding formulas and formatting, or sharing with people who expect a workbook instead of a raw text file.
When should you convert CSV to Excel?
- Turn an export or database dump into an editable Excel workbook
- Add formulas, formatting, and charts on top of raw data
- Open comma or delimiter-separated data without import errors
- Share a file colleagues can open directly in Excel or Sheets
Before you convert
Column types are detected automatically
Numbers, dates, and text are read from the CSV values; review the result if a column needs a specific format like leading zeros or currency.
One sheet, no extra workbook features
The output is a single-sheet XLSX. Formulas, multiple tabs, and styling can be added afterward in Excel or Sheets.
What happens to your file
CSV fields are written as text cells. Leading zeros, long identifiers and literal formula-like text are preserved without guessing their meaning.
Settings this conversion runs with
| Encoding | UTF-8 / UTF-16 (BOM) |
|---|---|
| Delimiters | Comma, semicolon, tab or pipe; detected automatically |
| Cell type | Text, including numbers and dates |
What changes
- Convert only the columns you need to numbers in Excel before calculating. Keep identifier and phone columns as text. Check the detected delimiter in the output.
- Other encodings must be saved as UTF-8 first. This cannot restore zeros already missing from the source.
About CSV and Excel files
CSV file
Strengths
- universally supported
- plain text and lightweight
- easy to process
Limitations
- no formulas or formatting
- single table only
Excel spreadsheet
Strengths
- formulas and formatting
- multiple sheets
- standard for office data
Limitations
- needs spreadsheet software
- not plain text
CSV vs XLSX
| Format | CSV | XLSX |
|---|---|---|
| Compression | — | — |
| Transparency | — | — |
| Best for | importing and exporting data, simple tables | spreadsheets and tables, data with formulas |
Guides for this conversion
- CSV to Excel: encodings, delimiters, and the leading-zero problem
CSV looks like the simplest file format there is. It is also the one that quietly corrupts phone numbers, dates, and product codes. Here is why, and how to convert without losing data.
Related tools
Frequently asked questions
- How does the CSV to XLSX conversion work?
- CSV fields are written as text cells. Leading zeros, long identifiers and literal formula-like text are preserved without guessing their meaning.
- What should you know before converting CSV to XLSX?
- Convert only the columns you need to numbers in Excel before calculating. Keep identifier and phone columns as text. Check the detected delimiter in the output.
- Is this CSV to XLSX converter free?
- Yes. You can convert CSV to XLSX online for free, with no account and no watermark.
- Do I need to install software or sign up?
- No. Use the converter from your browser without installing software or creating an account. Files are uploaded to our servers for processing.
- Are my files safe?
- Yes. Files are processed only to complete the conversion and are auto-deleted after 2 hours. We never share them.
- Can I convert multiple CSV files at once?
- Yes. Drop several files to convert them in a batch and download the results as a single ZIP.