How to convert MP4 to MP3
Here's how to turn your MP4 files into MP3:
- Add one or more MP4 files — drag and drop them or click to browse.
- Click Convert to MP3 and let the conversion run in your browser.
- Download your new MP3 files individually or as a batch.
What is MP4?
MP4 is the most widely compatible video format in the world. Using efficient H.264 compression, it balances small file sizes with good quality and plays on virtually every device, browser and platform — making it the safe default for sharing video.
What is MP3?
MP3 is the most popular audio format in the world. It uses lossy compression to shrink music and recordings to a fraction of their original size while keeping good sound quality, and it plays on virtually every device ever made.
MP4 vs MP3: how they compare
The two formats are suited to different tasks. Here's a side-by-side look at how they differ.
| MP4 | MP3 | |
|---|---|---|
| Format type | Video | Audio |
| Compression | Lossy (H.264/H.265) | Lossy |
| Quality | Lossy | Lossy |
| Best for | Sharing video anywhere | Music and podcasts |
Why convert MP4 to MP3?
People convert MP4 to MP3 to get a format that fits music and podcasts and sharing audio anywhere — and to make the file easier to open, share and reuse.
What MP3 gives you: plays on every device, small file sizes and adjustable bitrate.
Where MP4 falls short: lossy compression, patent-encumbered codecs and less efficient than newer formats. Converting keeps your content while moving to a format that matches where the file is going.
Tips for the best results
- You can convert several files in one go — add as many MP4 files as you like and download them together.
- Everything runs locally in your browser, so even large files convert quickly and nothing is uploaded.
MP4 to MP3 — frequently asked questions
- How do I convert MP4 to MP3?
- Add your MP4 file, click Convert to MP3, and download the MP3 result. The whole process happens in your browser and takes just a few seconds.
- Is it free to convert MP4 to MP3?
- Yes. This MP4 to MP3 converter is completely free with no sign-up, no watermarks and no limit on the number of files you can convert.
- Are my MP4 files uploaded to a server?
- No. Conversion runs entirely on your device using your browser, so your files never leave your computer or phone.
- Will I lose quality converting MP4 to MP3?
- MP3 uses lossy compression, so a small amount of detail is discarded to keep the file size down. At normal quality settings the difference is hard to notice. Keep your original MP4 if you need an exact copy.
- Can I convert multiple MP4 files at once?
- Yes. Add as many MP4 files as you like and convert them in a single batch, then download each MP3 result.