Convert Video to MP3 for Free
MP3, WAV, FLAC, M4A, AAC, OGG are supported — as well as video, whose audio track will be extracted
Drag a file here or
MP3, WAV, FLAC, M4A, AAC, OGG are supported — as well as video, whose audio track will be extracted
Done!
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How it works
Converto extracts and encodes the audio track from your video, or converts an existing audio file straight to MP3, using an FFmpeg build compiled to WebAssembly. Everything runs locally in your browser tab — your video or audio file is never uploaded, so conversion stays private and works even with large files, limited mainly by your device's memory.
Frequently asked questions
Can I convert video to MP3 without losing audio quality?
Yes — choose the High (192 kbps) quality option before converting to keep the audio close to the original bitrate; Medium (128 kbps) is a good balance of quality and file size.
Which video and audio formats can I convert to MP3?
You can upload MP4, MOV, MKV, AVI, WebM video, or WAV, FLAC, M4A, AAC and OGG audio — Converto extracts or re-encodes the audio track and saves it as an MP3 file.
Is this MP3 converter really free, with no watermark or file limit from the server?
Yes. There's no server involved at all, so there's no per-file limit, no watermark and no account required — the conversion runs entirely on your own device.