XLSM and XLSX are both modern OOXML Excel formats — the only difference is that XLSM contains VBA macro code while XLSX explicitly prohibits macros. Both use the same ZIP-compressed XML structure for worksheets, formulas, formatting, charts, and pivot tables. The .xlsm extension signals to Excel that the file may contain executable macro code.

Many organizations block XLSM files in email attachments and file sharing as a security measure, since VBA macros can contain malicious code. Converting to XLSX removes the macro payload, allowing the workbook to pass through email filters and security scanners without triggering alerts.

XLSX is also preferred when sharing spreadsheet data with external parties who don't need the automation. Stripping macros reduces file size, eliminates security concerns, and produces a cleaner deliverable focused purely on the data and analysis.

LibreOffice opens the XLSM file and saves as XLSX, preserving all OOXML worksheet content while omitting the VBA project storage. Cell values, formulas, formatting, conditional formatting, charts, pivot tables, data validation, named ranges, and sheet structure are all preserved identically — the underlying XML structure is virtually the same. Only the vbaProject.bin binary storage (containing VBA modules, forms, and class modules) is removed.

No worksheet data is lost. Only VBA macro code is removed. All formulas, formatting, and features are preserved.

Yes. Standard Excel formulas are preserved and functional. Only VBA-driven automation is removed.

No. Once converted to XLSX, the VBA code is permanently removed. Keep the original XLSM if you need macros.

Yes. All OOXML features are preserved identically — charts, pivots, conditional formatting, data validation.

Renaming doesn't remove the VBA project storage. Excel may reject the file or behave unpredictably. Proper conversion removes macros cleanly.

Device	XLSM	XLSX
Windows PC	Partial	Partial
macOS	Partial	Partial
iPhone/iPad	Partial	Partial
Android	Partial	Partial
Linux	Partial	Partial
Web Browser	No	No

特徴	XLSM	XLSX
正式名称	Excel Macro-Enabled	Microsoft Excel Spreadsheet
拡張子	.xlsm	.xlsx
最適な用途	VBA macros	Spreadsheet

Convert XLSM to XLSX — Free Online Converter

XLSMからXLSXへの変換について

XLSMをXLSXに変換する理由

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XLSMから他の形式への変換

他の形式からXLSXへの変換

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XLSMとXLSXの比較

XLSMを他の形式に変換

他の形式をXLSXに変換