MP4 to MP3 Converter β Convert Online Free
Free online MP4 to MP3 converter. Fast, secure, no signup required.
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Need to convert MP4 to MP3? MegaConvert makes it easy. Upload your MPEG-4 Part 14 (MP4) file and get a MPEG Audio Layer III (MP3) file in seconds β no software to install, no signup required. Whether you need this conversion for social media, video editing, device compatibility, web streaming / archival, our online converter handles it instantly. Free for files up to 25MB, with support for larger files up to 2GB.
How to Convert MP4 to MP3 Online
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1
Upload your MP4 file
Click the upload area or drag and drop your MP4 file. Files up to 25MB are free. Larger files are supported with pay-per-use.
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2
Choose MP3 as output format
MP3 is automatically selected on this page. You can adjust conversion settings if needed.
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3
Click Convert
Hit the Convert button to start processing. Your file will be converted using our high-performance servers.
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4
Download your MP3 file
Once conversion is complete, click Download to save your new MP3 file. Free files are available for 1 hour.
Why Convert MP4 to MP3?
- **Extract music** β Save the audio track from music videos as MP3 for offline listening.
- **Create podcasts** β Extract audio from video recordings for podcast episodes.
- **Save storage** β Audio-only MP3 files are 10-20x smaller than video MP4 files.
MP4 vs MP3 β Format Comparison
| Feature | MP4 | MP3 |
|---|---|---|
| Full Name | MPEG-4 Part 14 | MPEG Audio Layer III |
| Developer | Moving Picture Experts Group (MPEG) | Fraunhofer Society |
| First Released | 2001 | 1993 |
| Category | Video | Audio |
| Extension | .mp4 | .mp3 |
| MIME Type | video/mp4 | audio/mpeg |
Re-encoding video may reduce quality. Use MKV for lossless container conversion.
About MP4 Format
Most widely used video container format supporting H.264, H.265, and multiple audio codecs.
Full name: MPEG-4 Part 14
Developer: Moving Picture Experts Group (MPEG) (2001)
About MP3 Format
Most popular lossy audio compression format, widely used for music distribution.
Full name: MPEG Audio Layer III
Developer: Fraunhofer Society (1993)
Frequently Asked Questions
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How to Extract Audio from Video (Any Format to MP3)
To extract audio from video, upload MP4, MOV, or any video to MegaConvert.io and select MP3 β the audio track downloads separately in seconds. Free.
How to Convert MOV to MP4 (iPhone Video for Any Device)
To convert MOV to MP4, upload your iPhone video to MegaConvert.io β quality preserved, now plays on Windows, Android, Smart TVs, and everywhere. Free.
How to Convert MKV to MP4 (Play on Any Device)
To convert MKV to MP4, upload your .mkv to MegaConvert.io β video quality stays identical but now plays on iPhones, Smart TVs, and everywhere else. Free.
