1
Select MP4 Videos
Click the upload area or drag and drop your MP4 video files. Select one or multiple videos at once.
Click to Select MP4 Videos
Or drag and drop files here
How to Convert MP4 to MP3
2
Choose Settings
The default settings work great for most use cases. Audio is extracted as uncompressed WAV for maximum quality.
3
Download WAV
Click Extract and download your WAV audio files. Everything happens in your browser — no server upload needed.
When Do You Need to Convert MP4 to MP3?
Extracting MP3 audio from MP4 video files is one of the most common conversion needs. Music lovers save audio from music videos and concert recordings. Students extract lectures and podcast audio for offline listening during commutes. Language learners pull audio from video lessons for repeated practice.
Content creators extract voiceovers and soundtracks from video projects. Podcast producers convert video interviews to audio-only MP3 format. Anyone who wants to listen to video content without watching the screen benefits from MP4 to MP3 conversion.
With OneWeeb, you can extract MP3 from MP4 without uploading your videos to any server. Your personal videos, recorded meetings, and downloaded content stay on your device throughout the entire extraction process.
MP4 vs MP3 — What's the Difference?
| Feature | MP4 (Video) | MP3 (Audio) |
|---|---|---|
| Content type | Video + Audio | Audio only |
| Typical file size | 50-500 MB per hour | 1-2 MB per minute |
| Device support | ✅ Universal | ✅ Universal |
| Streaming | Requires video bandwidth | Low bandwidth |
| Background play | ⚠️ Often restricted | ✅ Always works |
| Best for | Watching content | Listening on the go |
OneWeeb vs Other MP4 to MP3 Converters
| Feature | OneWeeb | Others |
|---|---|---|
| Uploads files to server | ❌ No — 100% local | ✅ Yes |
| Requires signup | ❌ No | ✅ Often required |
| Daily limits | ❌ Unlimited | ✅ 3–10 per day |
| Works offline | ✅ Yes | ❌ No |
| Batch conversion | ✅ Yes, free | 💰 Often paid |
| Custom background color | ✅ Yes | ⚠️ Rarely |
| Quality control | ✅ Adjustable slider | ⚠️ Limited |
| Cost | ✅ Free forever | 💰 Free tier + paid |
Why Use OneWeeb to Extract MP3 from MP4?
No Upload Required
Your video files stay on your device. Nothing is sent to any server.
Batch Extraction
Extract audio from multiple MP4 files at once. No limits on file count.
High Quality Audio
Extract audio at high bitrate for clear, crisp MP3 output.
Free & Unlimited
No daily limits, no signup, no watermarks. Free forever.
Frequently Asked Questions
How do I convert MP4 to MP3?▼
Select your MP4 file in OneWeeb's converter and click Extract. The tool extracts the audio track from your video entirely in your browser — no upload to any server. Download your MP3 file instantly.
Will I lose audio quality?▼
The extracted audio maintains the quality of the original video's audio track. OneWeeb extracts at 192kbps by default, which provides excellent quality for music and speech.
Does this tool upload my videos?▼
No. OneWeeb extracts MP3 from MP4 entirely in your browser. Your videos never leave your device. This is especially important for private recordings and sensitive content.
How long does extraction take?▼
Extraction speed depends on the video length and your device's processing power. Most clips under 10 minutes process in seconds. Longer videos may take a minute or two.
Can I extract audio from other video formats?▼
This tool is optimized for MP4 files. For WAV audio extraction, try our MP4 to WAV converter. The main converter at OneWeeb.com supports additional formats.
Is extracting audio from videos legal?▼
Extracting audio from your own videos or videos you have rights to use is legal. Extracting audio from copyrighted content for redistribution may violate copyright law.