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Excel to .xlsx Converter

Convert .xls files to .xlsx format. Note: Only supports converting old .xls files to new .xlsx format.

Click to upload file or drag and drop file here

Maximum file size: 0MB Supported formats: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/vnd.ms-excel

Key Facts

Category
Format Conversion
Input Types
file, select, text
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

Excel to .xlsx Converter is an online format conversion tool for convert .xls files to .xlsx format. note: only supports converting old .xls files to new .xlsx format. It is especially useful when working with xml, xlsx content.

When to Use

  • •Use it when you need to convert xml, xlsx content quickly in the browser.
  • •Helpful for format conversion workflows that need repeatable inputs and fast results.
  • •A good fit when you want to test with real files before running the same workflow in code or API calls.

How It Works

  • •Provide Excel File, Target Format, Output Filename as input to the tool.
  • •The tool processes the request and returns a file result.
  • •For file workflows, start with representative samples such as xml, xlsx test files to verify edge cases and output quality.

Use Cases

Convert xml, xlsx data during debugging or QA.
Validate expected output before using the API or automation flows.
Test the workflow with representative sample files and edge cases.

Try with Samples

xml, xlsx, xls
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Sample XLSX spreadsheets for worksheet parsing and data extraction testing
title token xlsx
xlsx, xls
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Examples of different text case formats: camelCase, snake_case, kebab-case, PascalCase, and more
preferred input family xml
xml
Windows Serialization - C# Samples
Comprehensive C# serialization examples for Windows platform including JSON, XML, binary serialization, and data transformation
preferred input family xml
xml
Nginx Log Parser Samples
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preferred input family xml
xml

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FAQ

What does Excel to .xlsx Converter do?

Excel to .xlsx Converter helps you convert xml, xlsx content online without setting up a separate local script or app.

When should I use this tool?

Use it when you need a quick convert workflow, want to verify output, or need a browser-based utility for format conversion tasks.

Can I try this tool with sample data?

Yes. This page can recommend related sample files so you can test the workflow immediately.

What inputs does Excel to .xlsx Converter accept?

Excel to .xlsx Converter accepts Excel File, Target Format, Output Filename and supports file uploads for 1 field.

Is there an API for Excel to .xlsx Converter?

Yes. The tool page includes an API endpoint so you can move from manual testing to scripted usage.

API Documentation

Request Endpoint

POST /en/api/tools/excel-version-converter

Request Parameters

Parameter Name Type Required Description
excelFile file (Upload required) Yes -
targetFormat select Yes -
fileName text No -

File type parameters need to be uploaded first via POST /upload/excel-version-converter to get filePath, then pass filePath to the corresponding file field.

Response Format

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}
File: File

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-excel-version-converter": {
      "name": "excel-version-converter",
      "description": "Convert .xls files to .xlsx format. Note: Only supports converting old .xls files to new .xlsx format.",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=excel-version-converter",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

Supports URL file links or Base64 encoding for file parameters.

If you encounter any issues, please contact us at [email protected]