.OAT File Extension

File Type:
Android Optimized Application File

Having trouble opening .oat extension? Don't panic! This page explains what oat files are as well as suggests programs you may use to open oat files. You can download these programs through this page.

What is a OAT file?

Oat file extension has Android Optimized Application file type, developed by Google, which is associated with the "developer files" category.

Files in this format are created by the Android OS to improve the loading time of .APK files. When you install an app on an Android device, the operating system automatically optimizes data and generates a corresponding OAT file. Fast APK file loading speed allows to improve the user experience. OAT files first appeared in Android 5.0. The previous version of this operating system used .ODEX files for optimizing executables.  

To learn how you can open the given file, read the information below.

oat file icon
File Type:
Android Optimized Application File
Developer Files

How to open OAT file?

Double click the oat file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .oat extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the oat extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the oat file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open OAT files

  • Android Android
    • Google Android Google Android

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the oat file as well. Download Universal File Viewer for your OS.

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