OGG to M4A Converter
Convert OGG to M4A free — no upload, no signup
To convert OGG to M4A, drop your OGG audio files into the box below and click Convert. Fylo converts with ffmpeg running inside your browser, so nothing is uploaded and there's no signup or watermark. Make OGG audio work on Apple devices.
Drop audio files here
or tap to browse · paste with Ctrl+V · add many at once
Your files never leave your device
Advanced
How to convert OGG to M4A
Add your OGG files
Drag and drop OGG files into the box or tap to choose them. The converter engine (about 31 MB) downloads once, the first time you convert.
Pick a bitrate
192 kbps suits music and 128 kbps or less suits speech. Sample rate and mono/stereo are under Advanced.
Convert and download
Click Convert, then download each M4A file or all of them as one ZIP.
Why convert OGG to M4A?
iPhones and iTunes handle M4A natively, but not OGG.
What happens when you convert OGG to M4A?
Fylo re-encodes to AAC at 160 kbps in an M4A container.
How does Fylo convert OGG to M4A?
Fylo decodes the Vorbis audio in the OGG with ffmpeg compiled to WebAssembly and encodes it with FFmpeg's AAC encoder at 160 kbps inside an MPEG-4 (M4A) container. Both formats are lossy, so each conversion discards a little detail — start from the highest-bitrate OGG you have. A 3-minute song is ≈ 3.6 MB at 160 kbps as OGG and ≈ 3.6 MB at 160 kbps as M4A. The original sample rate and channel layout are kept unless you change them under Advanced.
What's the difference between OGG and M4A?
Ogg is an open container from the Xiph.Org Foundation; Vorbis, the audio codec most .ogg files use, reached version 1.0 in 2002. Vorbis was created as a free, unpatented alternative to MP3 and sounds better at the same bitrate.
M4A is an MPEG-4 container that holds only audio — usually AAC, or Apple Lossless (ALAC). Apple popularised the extension with the iTunes Store in 2003; iPhone Voice Memos and many podcasts also use it. Audiobooks often use the related .m4b extension.
Learn more: OGG format guide · M4A format guide
| Property | OGG | M4A |
|---|---|---|
| Compression | Lossy (Vorbis) | Lossy (AAC) or lossless (ALAC) |
| Typical bitrate | 96–320 kbps | 128–256 kbps |
| 3-minute song | ≈ 3.6 MB at 160 kbps | ≈ 3.6 MB at 160 kbps |
| Tags and cover art | Yes (Vorbis comments) | Yes (full, with cover art) |
| Compatibility | Android, Chrome, Firefox, games; limited on Apple | Apple devices, Android, Windows 10+, browsers |
| Best for | Games, open-source projects, web audio | iTunes/Apple Music libraries, voice memos, audiobooks |
| Introduced | 2002 | 2003 |
Frequently asked questions
Will it sync to my iPhone?
Yes, M4A is fully supported by Apple devices.
Is quality lost?
Slightly, as both formats are lossy.
Is my OGG file uploaded to a server?
No. Fylo runs ffmpeg, the same engine used by professional video tools, compiled to WebAssembly inside your browser. Your OGG file is read directly from your device and never sent anywhere.
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