MP4 to MP3 Converter
Convert MP4 and other videos to MP3 in your browser. Extract the audio at 128 to 320 kbps, trim it, or save as M4A or WAV. No upload, no limits.
Loading MP4 to MP3 Converter…
Your files never leave your device
How to use MP4 to MP3 Converter
- 1
Open MP4 to MP3 Converter on this page. It loads right in your browser.
- 2
Add your file, text or values and adjust the settings.
- 3
Copy the result or download it. Nothing is uploaded or stored.
About this tool
This MP4 to MP3 converter pulls the soundtrack out of a video and saves it as an MP3 you can play anywhere: on your phone, in the car, in a podcast app or in a video editor. It works with MP4, MOV, WebM and MKV videos and with audio files too. Everything happens inside your browser, so even a long or private video is never uploaded to a server and there is no file size limit beyond your device's memory.
How to convert MP4 to MP3
- Drop your video on the page or click to choose it.
- Pick the output format: MP3, M4A (AAC) or WAV.
- Choose the quality: 128, 192, 256 or 320 kbps.
- Optionally enter a start and end time to keep only part of the audio.
- Click Convert, listen to the result and download it.
Which bitrate should I choose?
| Bitrate | Best for | Size per minute |
|---|---|---|
| 128 kbps | Speech, lectures, podcasts | about 0.94 MB |
| 192 kbps | Most music and videos | about 1.4 MB |
| 256 kbps | Music you care about | about 1.9 MB |
| 320 kbps | Highest MP3 quality | about 2.3 MB |
A higher bitrate cannot add quality that the video never had. If the video's own audio is 128 kbps AAC, converting at 320 kbps only makes a bigger file.
MP3, M4A or WAV?
- MP3 plays on every device and app. The safe choice.
- M4A (AAC) sounds slightly better than MP3 at the same size and is the native format on iPhone.
- WAV is uncompressed: large files, but ideal for editing in Audacity or a DAW.
Common uses
- Save a lecture, sermon or interview to listen to offline.
- Turn a screen recording or meeting video into an audio file for transcription.
- Extract background music or a voice-over from your own video project.
- Make a ringtone from a short clip using the trim fields.
Only convert videos you own or have the right to use. Need to make the video itself smaller instead? Use the video compressor. Want text instead of audio? The text to speech tool works the other way round.
Features
- Convert MP4, MOV, WebM and MKV videos to MP3
- Choose 128, 192, 256 or 320 kbps
- Also saves as M4A (AAC) or WAV
- Trim the start and end before converting
- Mono option for speech and podcasts
- Runs in your browser: the video is never uploaded
Frequently asked questions
How do I convert MP4 to MP3 for free?
Drop the MP4 on this page, choose MP3 and a bitrate such as 192 kbps, and click Convert. The audio is extracted in your browser and you can download the MP3 straight away, with no sign-up.
Is my video uploaded to a server?
No. The conversion runs entirely in your browser using your device. The video never leaves your computer or phone.
Can I convert MOV, WebM or MKV to MP3?
Yes. Besides MP4 you can use MOV from iPhone, WebM and MKV videos, and audio files such as M4A, WAV, OGG and FLAC.
What is the best bitrate for MP3?
192 kbps is a good default for music and most videos. 128 kbps is enough for speech, and 320 kbps is the highest MP3 quality.
Can I extract only part of the audio?
Yes. Enter a start and end time in seconds or as minutes and seconds, for example 1:30, and only that part is converted.
Is there a file size limit?
There is no fixed limit. Very long videos depend on your device's memory; most laptops and phones handle videos of an hour or more.