what is excel file extension
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1,111,111 TRP = 11,111 USD
1,111,111 TRP = 11,111 USD
1,111,111 TRP = 11,111 USD
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An Excel file extension refers to the suffix at the end of a filename that indicates the file is a spreadsheet created or used by Microsoft Excel. The most common extensions are:
.xlsx (Default for Excel 2007 and later): The standard format for workbooks, based on XML and ZIP compression for smaller file sizes.
.xls (Legacy format for Excel 97–2003): Binary format with compatibility limitations but still used in older systems.
.xlsm (Macro-enabled workbook): Stores VBA macros; identical to .xlsx but supports automation.
.xlsb (Binary workbook): Faster for large datasets but lacks XML-based transparency.
.csv (Comma-separated values): Plain-text format for data exchange, though it loses Excel-specific features.
Excel also uses .xltx (template), .xlam (add-in), and .xlw (workspace) for specialized purposes. The extension ensures compatibility and functionality—e.g., .xlsx files cannot run macros, while .xlsm does. Modern versions prioritize .xlsx for security (no macro risks) and efficiency. Legacy .xls files may require conversion for full features.