This is the most direct official solution. Microsoft offers a free, browser-based version of Excel that can be accessed by signing up for a free Microsoft account (Outlook, Live, or Hotmail). Users can create, edit, and share spreadsheets directly in Microsoft Edge or Google Chrome on Windows 10. The web version supports core functionalities: formulas, tables, charts, conditional formatting, and real-time collaboration. While it lacks advanced features like macros (VBA), pivot table advanced options, and external data connections, it is more than sufficient for typical home, student, and light business use.
To access Excel Online, simply sign in with your Microsoft account or create a new one.
For Windows 10 devices with screens smaller than 10.1 inches (e.g., small tablets or older Windows phones), the Microsoft Excel app from the Microsoft Store is free for basic editing and viewing. However, on standard Windows 10 desktops and laptops (screens larger than 10.1 inches), this app requires a qualifying Microsoft 365 subscription for editing; otherwise, it functions only as a viewer.