RunConvert

XLT Converter

Convert files to and from XLT online for free. Fast, secure, and high-quality file conversion with no sign-up or software required.

Free to useNo file stored beyond 1 hourEncrypted over TLS 1.2/1.3No watermarks

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How it works

Three steps to your converted file

Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.

01

Upload your file

Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.

02

Choose an output format

Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.

03

Convert & download

Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.

What is an XLT file?

The XLT format is a legacy spreadsheet template file used by Microsoft Excel versions 97 through 2003. It utilizes the proprietary Binary Interchange File Format (BIFF8), storing formatting, formulas, and baseline data in a binary stream rather than the XML structure of modern formats. These templates serve as blueprints for generating new .XLS workbooks with consistent layouts, preventing the overwriting of the original template file upon saving.

How to open an XLT file

Modern versions of Microsoft Excel retain backward compatibility for XLT files, automatically converting them to the newer XLTX or XLTM format upon saving. Third-party applications such as LibreOffice Calc and Kingsoft Spreadsheets can render XLT templates, though complex formatting or legacy macros may require adjustment. Google Sheets supports importing XLT files, converting them to the native Google Sheets format.

XLT Technical Info

Full Name
Excel Binary Template
Developed By
Microsoft
Initial Release
1997
MIME Type
application/vnd.ms-excel

Why RunConvert

The fastest way to convert any file

Purpose-built for speed, privacy, and breadth of format support.

3,000+ conversions supported

Every popular and niche format covered - video, audio, image, document, archive and more. New formats added regularly.

Fast, cloud-powered

No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.

Secure & private

Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.

Free - no account needed

Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.