Browse Tools Top 100
JAR APK
Not possible

Convert JAR to APK

Can you convert JAR to APK?
Verified by Adam B.· reviewed by FE Editorial ·updated Jun 29, 2026
QUICK ANSWER
Is it possible to convert JAR to APK?
No - not a direct conversion.

If the app has an Android version, search Google Play for it by name. If you have an old J2ME MIDlet JAR from a feature phone, use a J2ME emulator such as FreeJ2ME or J2ME Loader to run it directly - conversion to APK is not possible.

No direct path
Also to APK: PY · AIR · DEX

On this page

Tested on macOS, Windows & Linux
Last verified Sep 2026

More free converters

HEIC, PNG, WEBP, MP3 and more - every tool here is free.

Open the toolbox

Why convert JAR to APK?

A JAR contains Java bytecode (.class files) for the Java Virtual Machine, which Android does not include. Android uses DEX bytecode compiled for the Android Runtime (ART), together with Android SDK APIs that do not exist in Java SE. Old J2ME MIDlet JARs ran on a CLDC/MIDP phone runtime - also not Android. The only online service that attempted JAR-to-.apk conversion is now defunct.

How to convert JAR to APK

FreeJ2ME EASIEST

For J2ME MIDlet JARs: download FreeJ2ME and load the .jar file to run the MIDlet directly - no APK conversion is needed or possible.

KEmulator FREE

For J2ME MIDlet JARs on Windows: open the .jar in KEmulator to run it directly as a MIDlet emulator profile.

Programs that convert JAR

JAR/JAD to APK Online Converter

About these formats

.JAR Java Archive

A JAR file is a Java Archive - a ZIP bundle of compiled Java bytecode (.class files), resources, and a manifest. To run an executable JAR you need Java installed (OpenJDK/Temurin is free),…

Open .JAR details →
.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 →

Quality & what to watch

  • The JAR-to-APK conversion category was historically tied to J2ME MIDlets from feature phones and was never technically sound; the one real service that attempted it is now defunct.
  • Android developers must build from source using the Android SDK - compiling Java or Kotlin into DEX bytecode - not convert an existing JAR.
  • J2ME Loader on Google Play can run J2ME MIDlet JARs on Android directly without any conversion.

Frequently asked questions

Can I run a JAR file on Android?
Not directly - Android has no JVM. Some Android apps include an embedded Java interpreter, but that is a separate application, not a conversion of your JAR.
I found a website that converts JAR to APK - does it work?
No - the conversion is technically impossible, and the one real service that attempted it is defunct; anything claiming to do it today is either broken or untrustworthy.
I have an old J2ME game as a .jar - can I play it on Android?
J2ME Loader on Google Play can run J2ME MIDlet JARs directly without conversion - that is the practical alternative.