Change the bitrate of an audio file
Pick between 64 and 320 kbps and download an MP3 with that exact bitrate. Ideal to pin down a specific quality or compatibility.
Your files never leave your device
How to change the bitrate
- 1
Upload the audio
MP3 or another format: the output will be MP3.
- 2
Pick the bitrate
From 64 kbps (smallest) to 320 kbps (best MP3 quality).
- 3
Download the MP3
With the exact bitrate you chose.
Why use this tool
Exact control
You set the bitrate; no vague "medium quality".
Predictable size
Bitrate times duration gives the size: 128 kbps is about 1 MB per minute.
Private
Your audio never leaves your device: ffmpeg runs inside your browser.
Real engine
ffmpeg, the industry standard, compiled to WebAssembly and self-hosted.
Frequently asked questions
Does raising the bitrate improve quality?
No: re-encoding an MP3 from 128 to 320 kbps does not recover what was lost, it only takes more space. Raise the bitrate only from lossless sources (WAV, FLAC).
Which bitrate should I pick?
96-128 kbps for speech, 192 kbps for well-balanced music, 320 kbps if the source is lossless and you want the best MP3 can do.
CBR or VBR?
We use CBR (constant bitrate): exact size and full compatibility with older players.