XLTM to XLSM Converter

The XLTM file is a macro-enabled template format introduced with Microsoft Office 2007, based on the Office Open XML (OOXML) architecture. It combines the templating functionality of XLTX with the ability to store Visual Basic for Applications (VBA) macros (contained in a vbaProject.bin part within the ZIP container). This format allows organizations to deploy standardized spreadsheets that include automation scripts, while preventing users from modifying the base template file.

Microsoft Excel is the primary application for creating and executing XLTM files with full VBA support. While LibreOffice Calc and OpenOffice can open XLTM templates, they may not execute proprietary VBA macros correctly. Mobile versions of Office and web-based viewers typically allow viewing the template structure but disable macro execution for security reasons.

The XLSM format is a macro-enabled spreadsheet file created by Microsoft Excel 2007 and later versions, utilizing the Office Open XML (OOXML) standard (ISO/IEC 29500). Unlike the standard XLSX format, XLSM files store embedded macros written in Visual Basic for Applications (VBA), allowing for automation and complex scripting within the workbook. The file structure relies on ZIP compression to contain XML documents for data, styles, and macro binary parts (vbaProject.bin), presenting a security risk that often requires user authorization to execute active content.

XLSM files open natively in Microsoft Excel (2007+) on Windows and macOS, which provides full VBA execution support. For non-Microsoft environments, LibreOffice Calc, OpenOffice Calc, and WPS Office can open these files and view data, though VBA macro execution compatibility varies significantly. Google Sheets can import XLSM data but strips the VBA macros, converting the file to its native format without automation features.