XLSX is the modern XML-based spreadsheet format used by Microsoft Excel for data analysis, calculations, and charting.
Excel Macro-Enabled Template, spreadsheet template with macros — stored as application/vnd.ms-excel.template.macroenabled.12 — uses lossless encoding to handle business spreadsheets with macros, automated reporting. Typical file sizes: varies by content.
Reach for XLSX when your priority is spreadsheets, data analysis, calculations — its efficient compression makes sharing fast and storage minimal.
Reach for XLTM when your priority is business spreadsheets with macros, automated reporting — its uncompromising quality ensures every detail is preserved.
Convert XLSX files to XLTM online for free. High-quality conversion with no registration required.
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.xlsx,.XLSX (max 100MB)
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XLSX (XLSX spreadsheets) - Spreadsheet format for data analysis and calculations. Best for spreadsheets, data analysis, calculations.
XLTM (XLTM) - Excel Macro-Enabled Template, spreadsheet template with macros. Ideal for business spreadsheets with macros, automated reporting.
Yes, GoConvertFile offers free conversion of XLSX to XLTM for files up to 100MB. No registration required.
Most XLSX to XLTM conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.
XLTM is ideal for business spreadsheets with macros, automated reporting. Excel Macro-Enabled Template, spreadsheet template with macros
No, converting XLSX to XLTM does not cause additional quality loss — XLTM uses lossless compression. However, any artifacts already present in the original XLSX file will persist in the XLTM output.
XLTM files are typically 2-5x larger than equivalent XLSX files because XLTM preserves all pixel data. This is expected and necessary for lossless quality.
Leave blank to convert all pages.