Why convert APK to AAB?
An AAB (Android App Bundle) is the publishing format uploaded to Google Play, from which Google's servers generate optimised APKs per device. An APK is the finished compiled output. Reconstructing an AAB from an APK would require recovering source-level structure that was discarded during compilation.
How to convert APK to AAB
Android Studio FREE
If you have the original source project, build a new AAB via Build > Generate Signed Bundle/APK, then choose Android App Bundle. Google Play has required AAB for new apps since August 2021.
About these formats
.APK
Android Package
An APK file is the installation package for an Android app. On a phone you tap the file, allow "install unknown apps" for the app you opened it from, then confirm. APK cannot be converted…
Open .APK details →
.AAB
Adobe Authorware Binary
A .AAB file is associated with Adobe Authorware Binary, a data file.
Open .AAB details →Quality & what to watch
- Sites claiming to convert APK to AAB either repackage the APK unchanged or return an invalid file - neither is a real AAB.
- If the source project is lost, the AAB cannot be recovered from the APK; you would need to rebuild from scratch.
bundletoolconverts AAB to APK sets, not the other way around - it has no APK-to-AAB command.
Frequently asked questions
Why does Google Play require AAB instead of APK?
AAB lets Google build device-specific APKs containing only the resources and libraries a particular device needs, reducing download size.
Can bundletool convert APK to AAB?
No. bundletool converts AAB to APK sets; it has no APK-to-AAB command.
I downloaded an APK from a mirror site - can I reupload it to Google Play as an AAB?
No. Google Play requires an AAB signed with the developer's upload key and built from a Gradle project; a repackaged APK cannot satisfy those requirements.
