Oct 26, 2018 · What Is an XLSX File? XLSX files are files used in Microsoft Excel, a spreadsheet application that uses tables to organize, analyze, and store data. Each cell can contain text or …

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What Is an XLSX File? A file with the XLSX file extension is a Microsoft Excel Open XML Format Spreadsheet file. It's a ZIP-compressed, XML-based spreadsheet file created by Microsoft …

Jul 19, 2023 · Features Create, Edit, Export Sheets from xlsx format Files More than 100 formulas, functions for calculation Auto generate chart, table AI Assistant: Auto summarization, …

Learn the key differences between XLS and XLSX file formats in Excel, including compatibility, file size, security, and features.

Mar 3, 2022 · It stores data in worksheets, which contain cells arranged in a grid of rows and columns, and may also contain charts, mathematical functions, styles, and formatting. XLSX …

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Jun 18, 2025 · Free XLSX Viewer is a convenient productivity tool for you to open and view diverse document formats, including XLSX, XLS, CSV, RTF, and MS Word, without needing …

Dec 2, 2025 · Excel Viewer Online is a web-based tool that lets you upload and view .xlsx, .xls, .csv, and other Excel files directly into your browser for free, without installing any additional …