How to use the Change MP3 Bitrate
- Choose the MP3 (or any audio file).
- Pick the bitrate and CBR or VBR.
- Click Change bitrate.
- Download the new MP3.
CBR or VBR?
CBR (constant bitrate) uses the same number of bits every second; some older devices, DJ software and broadcast systems require it. VBR (variable bitrate) spends more bits on complex passages and fewer on simple ones, giving a smaller file at similar quality.
A note on quality
Lowering the bitrate makes the file smaller and slightly lower quality. Raising it does not improve quality: the original detail is already gone.
Good to know
MP3 encoding uses the LAME encoder. VBR mode uses LAME quality presets matched to the bitrate you pick, which give a similar quality at a smaller average size.
Supported files
MP3, WAV, M4A, AAC, OGG, OGA, FLAC, OPUS, WMA, AIFF, AIF, AIFC, ALAC, AMR, AC3, MP2, M4B, M4R, CAF, AU, WEBA, 3GA, APE and VOC. Files up to 1 GB each.
Frequently asked questions
Are tags kept?
Yes, title, artist, album and other tags are copied to the new MP3.
Is the Change MP3 Bitrate free?
Yes, completely free, with no sign-up and no watermark. Files up to 1 GB each can be converted, and there is no daily limit.
Do you keep a copy of my files?
We never receive them. All processing happens on your device, so there is nothing for us to store or delete.
Can I use it on my phone?
Yes. Open the page in your phone's browser and choose a file. Phones have less memory than computers, so very large files are better converted on a laptop or desktop.