XLSX to XLS Converter — Convert Excel 2007+ Spreadsheets to Excel 97-2003

• Converts XLSX to XLS while preserving cell formatting, formulas, and charts
• Processes hundreds of files in one batch — no manual "Save As" per file
• Works entirely offline — your data never leaves your PC
• Includes a command-line interface for automation and scripting
• 30-day free trial with no limitations, no email required

Download Total Excel Converter and start converting XLSX spreadsheets to the XLS format today.

XLSX vs XLS: What Is the Difference?

XLSX is the default spreadsheet format in Microsoft Excel since version 2007. It is based on the Office Open XML (OOXML) standard and stores data in a compressed ZIP package of XML files. XLSX supports up to 1,048,576 rows and 16,384 columns per sheet, along with modern features like conditional formatting rules, sparklines, and advanced chart types.

XLS is the binary spreadsheet format used by Microsoft Excel from version 97 through 2003. It supports a maximum of 65,536 rows and 256 columns per sheet. Despite these limits, XLS remains in active use. Many legacy ERP systems, accounting packages, VBA macro workflows, and database import tools expect XLS input. Regulatory archives in some industries also require data in the XLS format that was standard at the time of creation.

While Excel 2007 and later can open both formats, older software cannot read XLSX at all. If you need to share spreadsheets with users on Excel 2003 or feed data into a system that only accepts .xls, converting XLSX to XLS with a dedicated tool is the cleanest solution.

How to Convert XLSX to XLS

• Step 1. Launch Total Excel Converter. The left panel displays a folder tree for quick navigation.
• Step 2. Browse to the folder that contains your XLSX files. The file list in the center shows all supported spreadsheets.
• Step 3. Check the XLSX files you want to convert. Use Check All to select every file in the folder for batch conversion.
• Step 4. Click XLS in the format toolbar at the top of the window.
• Step 5. Set the destination folder and adjust any settings in the conversion wizard (sheet selection, header/footer, encoding).
• Step 6. Press Start. The converter processes all selected files and saves the XLS output to your chosen folder.

The entire conversion takes seconds, even for large batches. Your original XLSX files remain untouched.

Command-Line Conversion

Total Excel Converter includes a command-line interface for scripted or scheduled conversions:

ExcelConverter.exe C:\Data\report.xlsx C:\Output\report.xls

You can specify sheet selection, encoding, and other parameters directly in the command. This makes it easy to integrate XLSX-to-XLS conversion into automated workflows, nightly ETL jobs, or server-side processes using .bat files or PowerShell scripts.

Why Use Total Excel Converter?

Batch processing. Select hundreds of XLSX files and convert them to XLS in one run. Processing an entire folder takes about as long as converting a single file.

Formatting preservation. Fonts, cell colors, borders, merged cells, number formats, and conditional formatting survive the conversion. Your XLS files look just like the XLSX originals.

Formula translation. Cell formulas, cross-sheet references, and named ranges are converted accurately. Formulas that use functions available in both formats work identically in the output file.

Built-in viewer. Preview any spreadsheet before conversion to verify that the source data and layout are correct.

No cloud uploads. All processing happens on your PC. Confidential financial data, HR spreadsheets, and trade secrets never leave your machine.

20+ output formats. Besides XLS, convert XLSX to PDF, DOC, HTML, CSV, XML, SQL, ODS, DBF, LaTeX, DIFF, SYLK, and more — all from the same tool.

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Total Excel Converter Customer Reviews 2026

"We have a warehouse management system from 2004 that only imports XLS. Every morning I receive updated inventory sheets in XLSX from headquarters. Total Excel Converter runs as a scheduled task and converts them to XLS automatically before the import job starts. Zero manual intervention."

Martin Kessler IT Systems Administrator

"Our regulatory filing system requires all spreadsheets in XLS format. When auditors send us XLSX workbooks, I batch-convert the entire set before archiving. The command-line mode integrates perfectly into our document processing pipeline. Formulas and formatting come through intact."

Patricia Dunn Compliance Officer

"I regularly need to feed Excel data into a legacy reporting tool that chokes on XLSX. Total Excel Converter handles the downgrade cleanly. The only thing to watch is the 65,536-row limit in XLS — the tool warns you, which is helpful. For files within that limit, it works flawlessly."

Rajesh Nair Data Analyst

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