M4A to OGG converter
Convert M4A to OGG in seconds, free and unlimited. No upload, no sign-up, no watermark: your audio never leaves your device. Re-encodes the audio into OGG.
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Quick answer: To convert M4A to OGG, add the M4A file to the iHateFiles M4A to OGG converter and press Convert. The conversion runs in your browser, so the file is never uploaded, and it is free with no sign-up, watermark or size limit. Re-encodes the audio into OGG.
Should you convert M4A to OGG?
Do this when OGG plays somewhere M4A does not. It is a second round of lossy compression, so set the bitrate at or above the original.
Both M4A and OGG are lossy
M4A (AAC) has already discarded some of the sound, and OGG (Vorbis) will discard a little more. The OGG encoder works from the M4A, not the original recording, so pick a bitrate at or above the source. A lower one saves space and costs quality you cannot get back.
Where the OGG will play
OGG plays on Android, Firefox, Chrome and games, but not Apple Music or older players.
M4A and OGG side by side
| M4A | OGG | |
|---|---|---|
| Inside the file | AAC | Vorbis |
| Compression | Lossy | Lossy |
| Carries sound | Yes | Yes |
| One minute of stereo | 1 to 1.9 MB | 0.7 to 1.5 MB |
| Plays on | Apple devices, Android, browsers and most modern players | Android, Firefox, Chrome and games, but not Apple Music or older players |
| Here | Read and write | Read and write |
What usually goes wrong
About the M4A. M4A, M4B, M4R and AAC are largely the same thing with different extensions. Renaming usually works, though it is not something to rely on.
About the OGG. Ogg is the container, Vorbis is the codec, and an .ogg file can also contain Opus or FLAC. That is why one .ogg plays somewhere another will not.
How to convert M4A to OGG
- Add your M4A file. It is read from your disk and stays there.
- Check the settings. The output format is already set to OGG.
- Press convert and the OGG file is saved back to your device.
Questions
How do I convert M4A to OGG?
Open this page, add your M4A file, and press convert. The file is decoded and re-encoded by your own browser and saved back to your device. Nothing is uploaded.
Is this M4A to OGG converter free?
Yes, completely. There is no account, no sign-in, no watermark and no daily limit, because there is no server doing the work. Your own device does it.
Are my files uploaded anywhere?
No. There is no upload endpoint. The conversion runs inside this browser tab, so your file never leaves your device. You can open your browser's network panel and watch: nothing carrying your file is sent.
Is there a file size limit?
No fixed limit. Because the work happens on your machine there is no server quota. The only ceiling is your own device's memory, which for video means very large files may be slow.
Will converting to OGG lose quality?
OGG is a lossy format, so some detail is discarded. The quality control on this page decides how much. The default is set high enough that most people cannot see the difference.
Can I convert several M4A files at once?
Yes. Add as many as you like and they are converted one after another, then offered as a single ZIP.