To convert MP4 to MP3, open the free File Converter, add the video, choose MP3 and tap Convert. You get an MP3 file with the sound of the video, at the quality you choose from 128 to 320 kbps. It works in your browser on phones and computers, and the video is never uploaded.
- Works with MP4, MOV, WebM, MKV, AVI and 3GP videos.
- 192 kbps is a good default. Use 320 kbps for music.
- You can convert several videos at once and download a ZIP.
- Nothing is uploaded, so it also works for private recordings.
Step 1: Add the video
Open the File Converter and tap Choose files. On a phone you can pick the video from your gallery or files.
Step 2: Choose MP3 and the quality
Pick MP3 next to the file. Tap Options to choose the audio quality: 128 kbps for speech and lectures, 192 kbps for most uses, or 256 to 320 kbps for music.
Step 3: Convert and save
Tap Convert. Most videos are read directly by your browser, so the MP3 is ready in seconds. If your browser cannot read the video format, the converter downloads its video engine once (about 31 MB) and uses that instead.
Other audio formats
The same tool can save the sound as WAV (no quality loss, bigger file) or M4A (small and plays well on iPhone). It can also convert audio files, for example WAV, M4A, OGG, FLAC, AMR or WMA, to MP3.
Tips
Long videos take longer on phones because all the work happens on your device. For a one-hour video, a computer is faster. Make sure you have the right to use the audio before you share it.
Frequently asked questions
Is MP4 to MP3 free?
Yes. It is free, with no sign-up, no watermark and no daily limit.
Does it work on iPhone?
Yes. Open the converter in Safari, choose the video from Photos or Files, and the MP3 is saved to Downloads in the Files app.
What bitrate should I choose?
192 kbps for most uses, 128 kbps for speech to keep the file small, and 320 kbps for music.
Is my video uploaded?
No. The conversion runs in your browser, so the video stays on your device.
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