- by x32x01 ||
Whether you're a student, data analyst, accountant, or just a tech enthusiast, understanding different Excel file formats can save you from headaches and costly mistakes. Let’s break them down 
The default format for Excel 2007 and later. It supports formulas, charts, and conditional formatting - and offers great compatibility.
Used in Excel 97–2003, this legacy format still works today but lacks some advanced features found in newer versions.
This format supports VBA macros - perfect if you automate tasks in Excel. Always be careful when sharing since macros can contain code.
A comma-separated values format used for data exchange between platforms. Ideal for importing/exporting data to databases or scripts.
The binary format designed for large datasets. It loads faster and consumes less memory - perfect for power users and analysts.
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.XLSX - The Modern Standard
The default format for Excel 2007 and later. It supports formulas, charts, and conditional formatting - and offers great compatibility.
.XLS - Old but Gold
Used in Excel 97–2003, this legacy format still works today but lacks some advanced features found in newer versions.
.XLSM - For Macro Lovers
This format supports VBA macros - perfect if you automate tasks in Excel. Always be careful when sharing since macros can contain code.
.CSV - Universal & Lightweight
A comma-separated values format used for data exchange between platforms. Ideal for importing/exporting data to databases or scripts.
.XLSB - Performance King
The binary format designed for large datasets. It loads faster and consumes less memory - perfect for power users and analysts. Last edited: