CSV to Excel
Create an XLSX workbook without guessing which values are numbers. Product codes and long identifiers stay as text.
- Comma, semicolon, tab and pipe input
- Text cells, optional header and frozen first row
- Download a real .xlsx workbook
No account. Files stay in your browser.Your CSV,
Your CSV,
ready for Excel.
Convert, check, and fix your table files. Keep the leading zeros, spot delimiter problems, and see your data before you download.
Free tools · Browser-local processing · Up to 5 MiB
product-export.csv → Data.xlsxTEXT PRESERVED
| # | product_id | postal_code | reference |
|---|---|---|---|
| 1 | 00127 | 02108 | 12345678901234567 |
| 2 | 00904 | 00123 | 98765432109876543 |
| 3 | 00008 | 00501 | 00000000000000001 |
✓ Saved as textExample data, not your file
Keep identifiers intactText cells preserve codes, zeros and long references.
Preview before you exportSee the records and any structural warnings first.
No file uploadsProcessing runs on your device, in this browser.
The toolbox
A better next step for your CSV.
Two focused tools. A clear result.
CSV check & repair
Inspect separators, choose the source encoding, and export a consistent UTF-8 file for your next import.
- Delimiter preview and record-width checks
- UTF-8 validation and manual encoding selection
- Optional byte order mark and formula protection
Understand the fix
All guides →Small problems, explained clearly.
01
Keep leading zeros when converting CSV to Excel
02Treat product codes and postal codes as text, before a spreadsheet changes them.
Why your CSV opens in one column
03Check the separator, preview the records, and export the delimiter you need.
Fix garbled characters in a CSV
04Understand UTF-8, the byte order mark, and what an encoding change can recover.
Handle commas, quotes and line breaks in CSV
Read a tricky record correctly instead of splitting on every comma.
Your file is yours.
These tools do not upload file contents. They use local browser processing, with no account or saved file history. Website hosting still involves ordinary connection information.