MP4 to MP3 free
Pull the audio out of an MP4 and save it as MP3 up to 320 kbps. Your video is never uploaded, so even a 1 GB file is quick.
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How to convert MP4 to MP3
- Drop up to 5 MP4 videos above. MOV, WebM and MKV work too.
- MP3 is already selected. Pick a quality: 128, 192 or 320 kbps.
- Click Convert to MP3.
- Download the files one by one or all at once as a ZIP.
Which MP3 quality to choose
| Bitrate | Best for | One minute of audio |
|---|---|---|
| 128 kbps | speech, lectures, podcasts, webinars | about 1 MB |
| 192 kbps | music, the right choice for most people | about 1.4 MB |
| 320 kbps | the highest MP3 quality | about 2.4 MB |
Keep in mind that quality can't get better than the source. If the video was recorded on a phone, 320 kbps just gives you a bigger file. For music videos or recordings made with a good microphone, 192 or 320 is worth it.
Why no upload means faster
Most online converters upload your video to their server first. A 1 GB file on a 20 Mbps connection takes about seven minutes to upload, and then you wait in a queue and download the result. Here the audio is extracted right in your browser on your computer or phone. The video goes nowhere, so the only wait is the processing itself.
What people use it for
- saving a lecture or webinar to listen to on the go;
- getting the music from your own clip or a concert video;
- preparing audio for transcription;
- sending a recorded conversation without the heavy video.
For lossless audio to edit, go with video to WAV. For iPhones there's M4A, and OGG for voice messages, both in the same tool. More on formats on the extract audio from video page.
How big is an MP3?
An hour at 128 kbps is about 60 MB, at 192 kbps about 85 MB, and at 320 kbps about 145 MB. The same hour of video is dozens of times larger, which is why MP3 is easy to keep on a phone and send in chats.
Audio files work too
Have a WAV, M4A, OGG or FLAC? Drop it in the same way and get an MP3.
Long recordings
Files can be up to 2 GB, enough for multi-hour webinar recordings. Processing happens on your device, so a long video takes a little while, but nothing has to be uploaded.
Limits
Free: 20 files a day, up to 5 at a time, up to 2 GB each, no watermarks or audio tags. Pro Audio: no daily limit and up to 50 files at a time, from $1.49 a day with a one-time payment.
FAQ
How do I convert MP4 to MP3 on my phone?
Open this page in your phone's browser, pick the video from your gallery and tap Convert to MP3. No app needed.
What's the maximum video size?
Up to 2 GB per file, up to 5 files at a time.
Which quality is best for music?
192 kbps is the sweet spot, 320 kbps is the maximum.
Is my video uploaded?
No, the audio is extracted in your browser.