Convert any file to
MP3, free

Drop in an audio or video file — get an MP3 back in seconds. Runs entirely in your browser, so nothing you upload ever leaves your device.

No upload to a server Up to 320kbps No sign-up
Drop a file here, or click to browse
Supports .wav .m4a .flac .aac .ogg .mp4 .mov .wma
Loading converter…0%
First conversion loads a one-time ~30MB engine — later ones are instant.
Recent conversions
Your converted files will show up here — nothing is stored except the file name and size.
How it works
01
Drop your file
Any audio file, or a video file — we'll pull just the audio track out for you.
02
Pick quality
Choose a bitrate up to 320kbps, or leave it on the recommended default.
03
Download
Preview it right on the page, then save the MP3 to your device.
Supported formats
WAV → MP3 M4A → MP3 FLAC → MP3 AAC → MP3 OGG → MP3 WMA → MP3 OPUS → MP3 MP4 → MP3 MOV → MP3 MKV → MP3 WEBM → MP3
Frequently asked
Is this MP3 converter really free?
Yes — no hidden limits, no sign-up, no watermark on the output. It runs on WebAssembly in your own browser, so there's no server cost being passed on to you.
What file types can I convert to MP3?
WAV, M4A, FLAC, AAC, OGG, WMA, and OPUS audio, plus the audio track from video files like MP4, MOV, MKV, WEBM, and AVI.
Does this upload my files anywhere?
No. Conversion happens entirely inside your browser using WebAssembly — your files never leave your device.
What's the max MP3 bitrate?
320kbps — the highest standard MP3 quality — or pick a lower bitrate for a smaller file.
Is there a file size limit?
Since it processes on your device instead of a server, the practical limit is your device's memory rather than an artificial cap. Most files under a few hundred MB convert smoothly.