Convert MP4 to MP3
100% private — runs on your device, never uploaded. Works offline once loaded.
Most of the time the picture is the part you do not want: a recorded lecture you would rather listen to on a walk, an interview heading for transcription, a podcast recorded to video, a piece of music from a clip you filmed. Extracting the sound leaves a file a fraction of the size that plays on anything, and because the audio inside an MP4 is usually AAC rather than MP3, this decodes it and encodes an MP3 at the bitrate you pick — 192 kbps for music, 96 or 128 for speech, where the extra data is wasted. Nothing is uploaded, which matters when the recording is a meeting, a lecture or an interview you were trusted with.
Frequently asked questions
What bitrate should I choose?
192 kbps is a safe default for music. For a lecture, an interview or a podcast, 96 or 128 kbps sounds the same and makes a much smaller file.
Can I get better quality than the original?
No. The MP3 can only be as good as the audio already in the video, and re-encoding always costs a little. Choose M4A or WAV on the Convert Audio tool if you want to avoid that.
Is my video uploaded?
No — the audio is extracted in your browser, so even a two-hour recording never leaves your device.
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