Ailt XLS to XLSX XLSM Converter

Excel → XLSX/XLSM

Ailt XLS to XLSX XLSM Converter is a powerful Excel converter which can batch convert Excel 97-2003(*.XLS) to Excel 2007 2010(*.XLSX,*.XLSM) file with accurately retaining the layout of the original Excel file. More, the conversion speed is very fast. It is easy to use without any technical requirements. Merely a few clicks can finish the conversion.

Free Trial Buy $35.95

One-time license Windows 11 / 10 Free trial

Ailt XLS to XLSX XLSM Converter — Windows application screenshot

Advanced Features

Clean, user-friendly interface.
Convert numerous Excel documents at one time.
Can simultaneously convert Excel 97-2003 format file(*.Excel) to Excel 2007-2010 format file(*.XLSX, *.XLSM) format once.
Add files by dragging and dropping them into the list.
Save and reload your conversion list for repeat jobs.
Convert an entire folder in one go.
Combine each sheet content of Excel Excel to single XLSX, XLSM format file.
Choose where output files are saved.
Automatically open the output folder when conversion finishes.
Save output files next to the source files.

How to use

Download and install the free trial, then open the app on Windows 11/10.
Click Add Files and select the documents you want to convert.
Pick the output format and folder, then click Convert.

Supported formats

Input →

Excel

Output →

XLSX/XLSM

Why choose this tool

Office Batch Windows 11 / 10 Offline

FAQ

Common questions

All Ailtware converters run natively on Windows 11 and Windows 10. They are desktop apps — no internet connection is required to convert.

Yes. Every tool offers a free trial you can download from the Downloads page. The trial is fully functional with a small output limit so you can evaluate it first.

Yes. Ailt Image to Word RTF Converter includes a built-in OCR engine that turns scanned images into editable Word and RTF documents, with 60 language packs available.

Absolutely. Every converter supports folder-level batch conversion so you can process hundreds of files in one run.

Ailtware uses a one-time license — pay once, use forever. No subscription.

We offer a 30-day money-back guarantee if the software does not meet your needs.