Convert APK to XLS

A legacy reporting program or device may require the older .xls workbook format for importing tabular data. An APK is not a spreadsheet, so the workable process is to export or extract data from the Android application and then save that data as XLS.

What the APK format is

APK means Android application package. It is a ZIP-based installation archive containing compiled code such as classes.dex, a compiled AndroidManifest.xml, resources, assets, native libraries, and signing information.

Android developers create APKs with Android Studio and Gradle; users encounter them when installing apps outside Google Play, testing software, backing up packages, or inspecting applications. An APK can contain embedded CSV, JSON, XML, SQLite databases, images, or sample documents, but application data is often stored separately on the device or on a remote server. Modern applications may also distribute split APKs, so one package can omit required language files or other components.

What the XLS format is

XLS is the legacy Microsoft Excel 97–2003 workbook format. It can contain worksheets, values, formulas, formatting, charts, and multiple tabs, and it opens in Microsoft Excel, LibreOffice Calc, and Apache OpenOffice Calc.

Use XLS when a receiving application specifically requires it. XLS supports a maximum of 65,536 rows and 256 columns per worksheet; XLSX is preferable for new workbooks because it supports larger sheets and newer Excel features.

How to extract data and create an XLS file

Use the app's export function

1. Do not install an APK from an untrusted source. For uncertain software, inspect a copy with an emulator or isolated test device rather than a personal phone.
2. Run the app and check commands such as Menu → Export, Settings → Backup, or Share. Prefer CSV, XLSX, XML, or JSON export over screenshots or copied text.
3. Transfer the exported file to a computer with USB file transfer, the app's share function, or Android Studio Device Explorer. Device Explorer generally requires a debuggable application or emulator.
4. Open the CSV, XLSX, XML, or JSON data in Microsoft Excel or LibreOffice Calc. Convert JSON or XML into rows and columns first if the spreadsheet program does not import the structure correctly.
5. In Excel, select File → Save As and choose Excel 97-2003 Workbook (*.xls). In Calc, select File → Save As and choose Excel 97–2003 (*.xls); confirm the format warning when prompted.

Extract embedded files without installing the APK

1. Make a backup copy of the APK and open it with 7-Zip or another ZIP archive utility. Renaming the extension to .zip is unnecessary, and changing the extension alone never converts the file.
2. Inspect assets/, res/raw/, and files with .csv, .json, .xml, or .db extensions. These may contain sample data, templates, or application databases rather than a user's current records.
3. Open a CSV directly in Excel or Calc, checking the delimiter, character encoding, date interpretation, and leading zeros during import.
4. For a SQLite database, use DB Browser for SQLite to inspect the schema and export the required table as CSV. Open that CSV in Excel or Calc and save it as XLS.
5. For JSON or XML, use Excel's import tools, a script, or a data-transformation utility to map nested records into columns before saving the result as XLS.

Inspect application behavior only when necessary

JADX can reveal database names, export routines, and API endpoints in many APKs, although obfuscation and incomplete decompilation can make the output unreliable. Android Studio and an emulator can expose files created while an app runs, but encrypted databases, authenticated downloads, and proprietary binary formats may require the application's own export process.

Online and desktop conversion options

Microsoft Excel and LibreOffice Calc are the most controllable desktop options because they let you review columns, encoding, formulas, and compatibility before writing XLS. Services such as Zamzar and Convertio commonly provide CSV-to-XLS conversion in a browser; upload only data that contains no private, regulated, or proprietary information, and verify the resulting workbook before delivery.

No reputable general-purpose service can infer spreadsheet rows from arbitrary APK code. An online service advertising direct APK-to-XLS conversion may only rename the file, extract a conveniently embedded document, or process the APK without understanding its application data. A direct conversion is meaningful only when the APK contains a recognizable tabular resource and the tool documents how it extracts that resource.

Quality and compatibility limits

Package extraction may produce no usable records because the app stores data in encrypted files, downloads it from a server, separates it into Android app data, or uses a proprietary binary database. An APK may also contain only static examples rather than live user data.

Saving structured data as XLS can change unsupported formatting, formulas, data types, Unicode characters, date values, column widths, or features introduced after Excel 2003. Check row and column limits before export, preserve the original CSV or database as an archive, and use XLSX when the receiving system accepts it.