Convert OGG to MP3
Your files are processed on your device. We never upload them.
Audio is read and written with Mediabunny. MP3 files are made with LAME and FLAC files with libFLAC; browsers without their own AAC encoder use FFmpeg's. Apple Lossless files follow Apple's ALAC code.
How to convert OGG to MP3
- 01A ▸Choose an OGG, OGA, or OPUS file, or drop it on the page.
- 02A ▸Pick a quality. Smaller file (128 kbps) is plenty for voice messages.
- 03A ▸Select Convert to MP3, listen to the result, and download it.
About OGG to MP3
Where OGG files come from
OGG files hold Vorbis or Opus audio. They come from WhatsApp and Telegram voice messages, game files, Wikipedia and Wikimedia Commons, and Linux apps. Older iPhones, Windows Media Player, and many car stereos and upload forms can't play them, so people convert them to MP3.
What changes
- The Vorbis or Opus sound is decoded and compressed again as MP3, so a little detail is lost.
- Opus always decodes at 48 kHz; the MP3 is saved at 48 kHz too, which every player handles.
- Title and artist tags are copied across when the OGG has them.
- Voice messages stay mono, so the MP3 stays small.
Measured
Our three-minute music-like sample (stereo, 44.1 kHz, the length of a typical song), saved as OGG Vorbis (about 94 kbps) and as Opus (96 kbps), each converted at the High setting (192 kbps) in Chrome on a laptop. Phone timings are still to be measured.
| OGG Vorbis file | 2.0 MB |
|---|---|
| Opus file | 1.7 MB |
| MP3 file (from either) | 4.1 MB |
| Time in Chrome (laptop) | 1.8 seconds, including loading the MP3 encoder |
In your browser
Chrome, Edge, and Firefox decode Vorbis and Opus with their own built-in decoders, inside a background worker. Recent Safari decodes both too; older versions may not read OGG files at all. No browser writes MP3 itself, so the first conversion downloads a 0.1 MB encoder (LAME), cached after that.
Limits
- OGG files that hold FLAC or Speex audio (rare) may not open.
- MP3 holds at most two channels, so surround OGG files are mixed down to stereo.
Other options
- OGG to M4A (audio converter): smaller than MP3 at the same quality, and plays on every iPhone.
- Trim audio: keep just part of a long voice message.
- Increase volume: make a quiet voice note easier to hear.
Questions
Can I convert WhatsApp and Telegram voice messages?
Yes. Their voice notes are Opus audio in an OGG file (WhatsApp names them .opus or .ogg). Save the voice note to your device, then choose it here.
Are my files uploaded?
No. Your files are processed on your device. We never upload them.
Do OGG files work on iPhone?
Recent Safari on iPhone, iPad, and Mac reads them. Older versions may say the file can't be read; then open this page on a computer with Chrome, Edge, or Firefox.
Does it lose quality?
A little, because the sound is decoded and compressed again as MP3. Pick a bitrate a little higher than the OGG's own (most are 96 to 160 kbps) and the difference is very hard to hear.
What's the difference between Vorbis and Opus?
Both are open audio formats in an OGG file. Vorbis is older and common in games and on Wikipedia; Opus is newer, better at low bitrates, and used for voice calls and messages. This page handles both.