Convert OGG to MP3
OGG files from games, voice notes and open-source apps, turned into MP3s that every device plays.
- Nothing is uploaded
- Works offline after first use
- Open source
- No sign-up, no watermark. The limit is your device’s memory (phones hold less).
Convert OGG Vorbis and Opus audio to MP3 in your browser. Game sounds, WhatsApp voice notes, Linux recordings. It is free, needs no account and adds no watermark, and your files are not uploaded: everything runs in your browser on your device. The limit is your device’s memory, which is smaller on a phone, and after your first run the page works offline.
Your iPhone may take a few seconds to prepare the video first, longer if it's stored in iCloud.
Done
Open the network tab. Your files never appear in it.
Add files and run the tool to see every request this tab makes.
Your files are processed on this device and never sent to a server. Reload the page to clear everything from memory.
OGG is an open container, and the audio inside is usually Vorbis or Opus. You get OGG files from more places than you might expect: sound effects and music ripped from video games, recordings made with Audacity or a Linux voice recorder, Wikipedia and Wikimedia Commons audio, some radio and podcast archives, and WhatsApp or Telegram voice notes exported from a desktop app. iPhones, older car stereos, many smart speakers and most DJ and video editing software will not play them.
Your browser already has Vorbis and Opus decoders built in, so the OGG is decoded right here in the tab, then the LAME encoder running in the page writes the MP3. There is no server step at all. That matters for voice notes and private recordings, which are exactly what people convert most, and it means there is no queue and the size limit is your device’s memory (phones hold less): a two-hour recording converts as quickly as your device can manage.
This page starts at 192 kbps stereo, which keeps music transparent for most listeners. Game audio and short sound effects are fine at 128. For voice notes, pick 96 kbps and mono: a ten-minute memo comes out around 7 MB.
How it works
- Drop one or more .ogg, .oga or .opus files, or tap to pick them.
- Keep 192 kbps for music, or drop to 96 kbps mono for voice notes.
- Convert. Each MP3 downloads; a batch arrives as one zip.
In your browser, not on a server
Your browser decodes the sound track with the same audio decoders it uses to play media on any website (AAC for MP4, MOV and M4A; Opus or Vorbis for WebM; FLAC, WAV and MP3). The samples are resampled to 44.1 kHz and handed to LAME, the reference MP3 encoder, compiled to WebAssembly and served by this site. WAV files are written directly by a few lines of code in the page. Everything happens in memory in your tab.
Compared with upload-based tools: Online converters upload the whole video just to keep its sound, cap free files at a few hundred megabytes, and make you wait in a queue. Home videos, lectures and voice memos are personal. Here the file never leaves your device, so a 1 GB video converts as fast as your computer can read it, and the limit is your device’s memory (phones hold less).
Verify it yourself. Give the page a short while after your first run to save itself for offline use, then turn off Wi-Fi or switch to airplane mode and run the tool again. Or open your browser's developer tools (F12, or Cmd-Option-I on a Mac), pick the Network tab, and watch it while you convert. The panel above does the same count for you.
Questions
Will converting OGG to MP3 lose quality?
A little, as with any conversion between two lossy formats: Vorbis already threw some detail away, and MP3 throws away a bit more. At 192 kbps or higher the difference is very hard to hear. Keep the OGG if you might want the best copy later.
My OGG will not convert. Why?
A few players write OGG files with FLAC or Speex audio inside, which some browsers cannot decode, and Safari on older iPhones and Macs has no Vorbis decoder at all. Try the same file in Chrome, Edge or Firefox on a computer. The page tells you when it cannot read the audio, so nothing fails silently.
Are the tags kept?
No. The title, artist and album from the OGG are not copied into the MP3. The file name stays the same apart from the extension.
Is the file uploaded anywhere?
No. There is no server in this process. The page is a static file and the work is done by code running inside your browser tab. Give the page a short while after your first run to save itself for offline use; then you can turn off Wi-Fi and it still works.
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Guides
- How to convert a video to MP3This is different from muting a video: you want the sound saved as its own file. Most devices have no built-in way to do that.
- A free Zamzar alternative with no daily limitZamzar's free service limits how many files you can convert and how big each can be. Here is an alternative with no such cap.
- A free FreeConvert alternative with no processing time capFreeConvert's free plan limits the processing time for each file and for the day. Here is an alternative with nothing to time out.
- Is CloudConvert safe?For most files, yes: it is an established, certified service. The real question is whether a given file should leave your computer at all.
- Is FreeConvert safe?FreeConvert is a legitimate service with a clear deletion policy. Whether it is safe for a particular file depends on whether that file should be uploaded anywhere.