How to convert an Excel file to an application?

There are four practical routes, from easiest to most technical. The most common is a no-code platform: first clean and structure your data with one header row, one data type per column, and no merged cells; put the file in the cloud via Google Sheets, OneDrive, or SharePoint, or upload the CSV or XLSX; then in the builder choose Create app or Import data and connect the source. The platform parses the file and auto-generates a starter layout, and you customize views, add authentication, set permissions, and add automations before publishing. A second route is Microsoft Power Apps, where you format the Excel data as a Table, choose Start with data, upload your workbook, and Power Apps generates a canvas app you can edit. A third route compiles a workbook into a standalone Windows EXE using tools like xlCompiler, which is good for distributing an Excel model rather than a multi-user web app. The fourth is custom code, for example Python with Pandas plus Streamlit or Flask, which gives full flexibility but requires engineering time and ongoing maintenance. No-code and Power Apps keep the app live-synced to your data source, so edits flow both ways. In every route, data hygiene up front determines the quality of the result.