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XLS to XML Converter — Free, Online, No Signup
Convert XLS files to XML online with no signup required.
XLS at a glance
XLS
XLS is tied to the BIFF-based legacy Excel ecosystem that later gave way to OOXML-based workbook formats such as XLSX.
XML at a glance
XML
XML was developed by the W3C in the late 1990s as a simpler, web-friendly subset of SGML, then became one of the defining interchange layers for publishing, configuration, document, and enterprise integration workflows.
Format comparison
| Feature | XLS | XML |
|---|---|---|
| File type | Spreadsheet | Other |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1987 | 1998 |
| Inventor | Microsoft | W3C XML Working Group (Tim Bray, Jean Paoli, C. M. Sperberg-McQueen, Eve Maler, Francois Yergeau) |
| Status | active | active |
| Primary use cases |
|
|
| Vector scaling | Not supported | Not supported |
| Reflowable text | Not supported | Supported |
| Structured data | Supported | Supported |
When to use each format
When to use XLS
- Your source file is already in XLS.
- Preserve source expectations before exporting to XML.
- XLS is commonly used in spreadsheet workflows.
When to use XML
- Your target workflow expects XML.
- Improve delivery compatibility with XML.
- XML is commonly used in other workflows.
FAQs
Why convert XLS to XML?
Convert to XML when the receiving system expects hierarchical tagged data, validation against schemas, or document-style structured exchange.
It is appropriate for enterprise integration, publishing workflows, standards-based interchange, and data sets where formal structure matters.
For lighter-weight developer-facing payloads, JSON is often simpler.
What changes when converting XLS to XML?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to XML adds reflowable text.
What should I review after converting XLS to XML?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.