WAV to MP3

Compress a WAV to MP3 at the bitrate you choose, in your browser.

Select an audio file

Your WAV is encoded to MP3 at the bitrate you pick — entirely in your browser.

点击选择，或将文件拖到此处

如何 WAV to MP3

1
Add the WAV
Drop in your WAV file — nothing is uploaded.
2
Choose a bitrate
Pick 128–320 kbps depending on the size/quality trade-off you want.
3
Download the MP3
Save the compressed MP3.

Which bitrate should I pick?+

192 kbps is a good default. Use 256–320 for music you care about, 128 for voice or when size matters most.

Is my file uploaded?+

No. The WAV is decoded and the MP3 encoded in your browser with a JavaScript port of the LAME encoder.

How much smaller will it be?+

Usually 8–12× smaller than the WAV, depending on the bitrate you choose.

Is any quality lost?+

MP3 is lossy, so yes — but at 192 kbps and above it's hard to hear on most material.

你们会把我的文件上传到服务器吗？+

不会——这里的每个工具都完全在你的设备上处理文件，不会向服务器上传任何内容。唯一的例外是 AI 工具，它们会把提取的文本（而非文件本身）发送给 Claude 来完成工作。

有文件大小限制吗？+

我们没有人为设置限制，但由于处理过程在你的浏览器中进行，非常大的文件（超过 500MB 或 1000 页）会受到你设备内存的限制，而非我们的限制。