Focused purpose
What this tool does
Convert CSV or TSV to Excel XLSX locally with a chosen sheet name, practical widths, frozen headers and formula-safe text. Download without an account.
- ✓ Custom sheet name
- ✓ Practical column widths
- ✓ Frozen header row
- ✓ Formula-injection protection
Workflow
How to use it
- 01
Open CSV or TSV and review parsed values.
- 02
Choose workbook presentation and safety settings.
- 03
Generate, validate and download XLSX.
Available controls
Available options
- Name the worksheet.
- Freeze the first row.
- Limit automatic column width.
- Export risky formula prefixes as safe text.
Formula-safe contacts
Example before and after
Spreadsheet-like values must remain literal text in the workbook.
Before
name,note Ada,"=2+3" Linus,"+123456"
After
Workbook: contacts.xlsx Sheet: Contacts Header frozen Risky cells stored as text
Expected result: A checked XLSX opens with frozen headers and no executed formulas.
Practical scenarios
Common use cases
Deliver a CSV as a friendly workbook.
Freeze headers for review.
Protect text imports from formula execution.
HONEST LIMITS
Important limitations
- iThe export creates values, not formulas, macros or charts.
- iXLSX row and column limits still apply.
FAQ
Questions about this tool
Are CSV formulas executed?
No. Formula-like values are written as safe text and the workbook contains no macros.
Can I choose the sheet name?
Yes. Invalid Excel characters and length are validated before generation.
When is the XLSX library loaded?
Only after an XLSX file is opened or an XLSX export is requested.