How do I convert MP4 to MP3 on Windows, Mac or a phone?
Open this page in any browser, drop the MP4 file and download the MP3. Nothing needs to be installed, because the conversion happens inside the page on every system.
Convert MP4 to MP3
Extract the audio from an MP4 video and save it as an MP3 file.
Your files never leave this device.
Drop your MP4 video here, keep MP3 selected and download the audio. MP4 is the most common video format, and this page reads its sound track and saves it as a separate MP3 you can play anywhere. The conversion runs in your browser, so the video is not uploaded, and you can convert several MP4 files at once.
How to use
- Drop one or more MP4 files onto the page.
- Keep MP3 selected and pick a bitrate; 192 kbps is the default.
- Set start and end seconds if you want only part of the video.
- Download each MP3, or all of them together as a ZIP.
Frequently asked questions
Will the MP3 sound worse than the MP4?
Slightly, if at all. The MP4 sound is already compressed, and the MP3 compresses it again. At 192 kbps most people hear no difference; choose 256 or 320 kbps for music you care about.
Why is my MP3 so much smaller than the MP4?
Because the picture is gone. In a video, the image takes up most of the file, while the sound is a small part, so an MP3 of the same recording is usually a fraction of the size.
Can I convert just one section of an MP4?
Yes. Enter a start and an end second before converting and only that part is saved. This helps for taking one song from a long video.
Can I turn an MP4 from the internet into MP3?
Only if you have already saved the MP4 file on your device. This page cannot take a link and does not download anything, so it works with your own files only.
Is there a size limit for the MP4 file?
The limit is on sound length, not file size: up to 2 hours of audio per file. A very large video can still be too heavy for a phone's memory, so use a computer or trim it.
Why does my MP4 give an error?
Usually the file has no sound, or it is protected, for example a purchased movie. Protected files cannot be opened here. If a browser fails on a normal file, try another browser.
What is an MP4 to MP3 conversion good for?
An MP4 holds both picture and sound, and often you need only the sound. Common cases are a lecture you want to listen to while walking, a recorded meeting you want to review, an interview you will transcribe, or the soundtrack of your own clip. A screen recording of a podcast or webinar is a typical one: the picture adds nothing, but the voice is what you want.
The MP3 plays on almost every phone, car stereo and music app, and it is a fraction of the size of the video, so it is easier to send or keep.
How do I get the best MP3 from an MP4?
The quality of the MP3 can never be higher than the sound inside the video, so a better bitrate does not rescue a muffled recording. For speech, 128 kbps is clear and small. For music, use 192 kbps or more. If there is a single speaker, the mono option halves the amount of audio and keeps the voice clear.
When you have many clips, add them all at once and download the ZIP. All the settings are explained on the main video to MP3 converter, which this page opens with MP3 already selected.
What if the video came from my iPhone or is only audio?
Videos recorded on an iPhone or saved by QuickTime on a Mac are often MOV files; the MOV to MP3 page covers them. If what you have is already a sound file, such as a voice memo, use M4A to MP3.
Then share the result. If you are making notes from the recording, the word counter helps you check how long the written text will take to read aloud.
What should I check before I delete the video?
Play the MP3 from the start to the end at least once, especially if you trimmed it. Check that the right section was kept and that the volume is fine, because the conversion does not fix a quiet recording. Keep the original video until you are sure, since an MP3 cannot give you the picture back.
How it compares
| This tool | Upload-based services | |
|---|---|---|
| Do files leave your device? | No | Yes |
| Account required | No | Often |
| Daily limit | None | Often |
| Watermark | None | Sometimes |
Limits and privacy
- It works only with MP4 files on your device; downloading from links is not possible.
- The output is audio only, so you cannot save the video part.
- Protected (DRM) MP4 files cannot be opened.
- Very long or very large videos can fail on phones with little memory.