XLSX to XLS Converter

Convert your XLSX files to XLS in seconds — free and online.
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Select or drag & drop files to begin.

How to convert XLSX to XLS?

Just three simple steps — no downloads, no hassle.
Click the “Choose files” button and upload your XLSX file.

You can drag and drop it too — we’re flexible!

Choose “XLS” as the output format, then click “Convert”.

We’ll take care of the rest — it only takes a few seconds.

All done! Your file is now in XLS format.

Just download it and enjoy. Easy, right?

At a glance: XLSX to XLS

🔁 Conversion: XLSX to XLS ⏱ Average conversion time: 20 seconds 💳 Cost: Free 📂 Category: Spreadsheets ✳️ Extensions: .xlsx → .xls 📏 Max file size: 75 MB 👩‍💻 Works on: Windows, Linux, macOS, iOS, Android

About XLSX

XLSX is the modern Excel spreadsheet format introduced with Microsoft Office 2007. It uses ZIP compression and an XML-based structure, resulting in smaller files and better compatibility. XLSX supports advanced spreadsheet features and is widely used in business and data analysis.

About XLS

XLS is the original spreadsheet file format for Microsoft Excel (up to version 2003). It stores data in rows and columns, with support for formulas, charts, and macros. XLS files have been largely replaced by the newer XLSX format.

Why Convert XLSX to XLS with MiConv?

Because it's quick, easy, and made for people like you.

No software needed

Convert your .xlsx files to .xls right in your browser — no downloads, no installs. Everything happens securely in the cloud.

Your files stay private

We never store your files permanently. Only you can access them, and they’re automatically deleted from our servers within 2 hours.

Fast, free, and effortless

Turn your XLSX files into XLS in just a couple of clicks. No registration, no limits — and it’s 100% free.

More XLSX conversions you can try

Explore other formats you can turn your XLSX files into — it's easy!

XLSX to XLS Converter Quality Rating

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