Step 1 / source
Choose the source
Drop one file here
Choose the header-based xlsx worksheet you want to turn into flat record xml.
Checking publication status...LOCAL DATA CONVERTER / EXCEL TO XML
Excel to XML
Export one XLSX worksheet as well-formed record XML using the first row as element names and stored cell values only.
Processed in this browserOne unencrypted .xlsx file up to 15 MB and 50 worksheets. The selected sheet is limited to 50,001 rows, 200 columns, 1,000,000 cells, and 20 MB output.
XLSX - one worksheet
No file upload
This operation runs with browser APIs. Nirmion receives catalogue requests, not the selected source bytes.
Original stays unchanged
The converter creates a separately named output. It never writes back into the source file.
Bounded work
One unencrypted .xlsx file up to 15 MB and 50 worksheets. The selected sheet is limited to 50,001 rows, 200 columns, 1,000,000 cells, and 20 MB output.
Plain-language method
How Excel to XML works
The browser reads stored worksheet values without recalculating formulas, uses row one as headers, creates safe unique child element names, escapes XML-sensitive characters, and writes every remaining non-empty row inside the requested root and record elements.
- 01Choose a valid source
Use an unencrypted XLSX worksheet with a header row and at least one data row. Hidden tabs still count in worksheet order.
- 02Review the conversion choices
XML names must start with a letter or underscore and contain only letters, numbers, dots, hyphens, or underscores.
- 03Inspect the separate result
The XML is UTF-8 and ends in _nirmion_tools_records.xml. Styling, formulas, charts, comments, and additional worksheets are not included.
Useful when
Practical jobs this tool handles
- Create a simple XML feed from an approved worksheet.
- Move flat spreadsheet data into a legacy import.
- Generate deterministic record XML for testing.
Before converting
Check the source and destination rules
- Verify the worksheet number.
- Use meaningful, valid root and row names.
- Review generated element names for blank or duplicate headers.
Know the boundary
Know what the destination format cannot keep
XML output is intentionally flat. Merged cells, formula logic, types, formatting, relationships, and workbook structure cannot be reconstructed from the record document.
Quick answers
Questions before you convert
The conversion contract is deliberately explicit.
Are formulas copied?
No. Only a stored result is read, and formulas are never recalculated.
What happens to invalid header characters?
They are replaced to create safe unique XML element names.
Are empty cells included?
Yes, as empty child elements inside each exported row.