Audio to MP3
Convert audio to MP3 with bitrate control.
Add audio
MP3, WAV, M4A, OGG, FLAC, OPUS — or a video to pull audio from.
Choose an output
Convert audio to MP3 with bitrate control.
Fine-tune
Optional — sensible defaults are already set.
About Audio to MP3
MP3 is still the format that plays everywhere: car stereos, old MP3 players, smart TVs, web pages and every phone. This tool decodes WAV, FLAC, M4A, OGG, Opus or the audio track of a WebM/MP4 file and encodes it with the LAME MP3 encoder at the constant bitrate you choose.
When it helps
- Making a FLAC or WAV album playable on a car stereo or USB stick that only reads MP3
- Turning a WhatsApp or Telegram voice note (Opus/OGG) into something any email recipient can open
- Pulling the soundtrack out of an MP4 or WebM clip as a standalone MP3
- Converting M4A downloads for software or hardware that does not support AAC
Tips
- 192 kbps (the default) is transparent for most listeners on most music. Go to 256 or 320 kbps if the source is lossless and you want headroom; 96 or 128 kbps is plenty for speech.
- If your source is already lossy (AAC, Opus, OGG), every re-encode throws away a bit more detail. Pick a bitrate at or above the original rather than below it.
- Choosing a bitrate higher than the source cannot restore quality that was already lost; it only makes the file bigger.
Good to know
Quick answers about audio to mp3 in your browser.
For music, 192 kbps is a sensible middle ground and 320 kbps is the highest MP3 allows. For podcasts, lectures and voice memos, 96 to 128 kbps keeps files small without hurting intelligibility.
Yes. MP3 is lossy, so some audio data is discarded. At 256 to 320 kbps the difference is very hard to hear, but keep your FLAC originals if you may need to convert again later.
Yes. There is no sign-up, no watermark and no limit on how many files you process.
No. Files are read and processed locally in your browser, so they never leave your device.
Related tools
Part of the Audio Converter collection.