Audio conversion
Convert M4A to OGG
Updated Jul 2026
M4A is the audio format used for voice memos and downloaded music on iPhone and Mac. OGG is an open audio format built for games, Android, and Linux, places that don't lean on Apple software. To convert, open the M4A file in a converter and export it as OGG, all on your own computer without uploading anything.
- Extension
- .m4a
- Type
- Audio
- Typically
- iTunes / voice memos
- Compression
- Lossy
- Extension
- .ogg
- Type
- Audio
- Typically
- Open-source audio, games
- Compression
- Lossy
Convert M4A to OGG on your own computer. Nothing uploads.
How to convert M4A to OGG
- Open Morphjet and drag in the M4A file, or a whole folder of them, that you want to convert.
- Choose OGG as the output format.
- Convert. The OGG files are written next to your originals, and nothing leaves your machine.
M4A vs OGG: what actually changes
| M4A | OGG | |
|---|---|---|
| File size | Compact, similar in size to OGG at a matching quality setting | Compact, similar in size to M4A at a matching quality setting |
| Compatibility | Plays natively on iPhone, Mac, and in Apple's own music and voice apps | Plays in games, many media players, web browsers, and on Android and Linux, but not natively in Apple's music apps |
| Quality | Lossy, good quality at normal bitrates | Lossy, good quality at normal bitrates, though converting from M4A adds a second round of compression on top of the first |
| Metadata and cover art | Stores title, artist, and cover art | Stores similar tags using a different system, so cover art and some fields don't always survive the conversion |
When to convert, and when not to
Convert M4A to OGG when the audio needs to work in a game, on Android, on Linux, or anywhere else that doesn't play nicely with Apple's audio formats.
Keep the M4A if you're staying inside Apple's ecosystem, since it already plays there natively and converting to OGG only adds another round of lossy compression for no real benefit.
Why not just use an online converter?
M4A files are often personal recordings, like voice memos, not just downloaded music, so they're not something you'd want sitting on a server you don't control. An online converter has to receive that audio before it can hand back an OGG file. Converting on your own computer means the recording, whatever it actually contains, never leaves your machine.
Questions
Does converting M4A to OGG lose quality?
A little. Both formats are lossy, so going from one to the other is a lossy to lossy conversion, adding a small extra round of compression on top of what's already in the M4A. At normal bitrates it's hard to hear, but it isn't a perfect round trip.
Will the OGG keep the title, artist, and cover art?
Mostly, but not perfectly. OGG stores that information differently than M4A, so title and artist usually make it across, while cover art and less common fields sometimes get dropped.
Why would I need OGG instead of M4A?
OGG shows up in games, on Android, on Linux, and in various open web audio setups, places where M4A either isn't supported or isn't the expected format. If everything you own is made by Apple, you likely don't need OGG at all.
Can I convert M4A to OGG without uploading the file?
Yes. A desktop app like Morphjet converts it on your own computer, so the audio never has to travel over the internet to become an OGG file.
Morphjet converts M4A, OGG, and 1,800+ other formats, all on your machine. Launching this July.