MP4 to MP3 Converter
Extract audio from any video — MP4, MOV, WEBM to MP3 in one click
This can take a bit on longer videos — keep the tab open.
MP3 downloaded — your video was deleted from the server.
MP4 to MP3 Converter — Complete Guide & Instructions
MakeCard MP4 to MP3 pulls the sound track out of any video file and hands it back as a high-quality MP3. Upload the video, we run a professional-grade audio extraction with ffmpeg, and your MP3 downloads automatically. The uploaded video is deleted immediately after conversion — nothing is kept.
How to Use MP4 to MP3 Converter
- 1 Select or drop a video file — MP4, MOV, WEBM, MKV or AVI up to 200 MB.
- 2 Click "Convert to MP3" and keep the tab open.
- 3 The video uploads once and the audio is extracted on the server.
- 4 The MP3 downloads automatically when ready.
Key Features & Capabilities
- Extracts audio from MP4, MOV, WEBM, MKV and AVI.
- ffmpeg-powered VBR MP3 (~165 kbps) — studio-grade encoder.
- Automatic download with the original filename.
- Upload and result are both deleted right after the transfer.
- Clear inline errors — the page never navigates away.
Supported Formats & Specifications
| Parameter | Specification |
|---|---|
| Input | MP4, M4V, MOV, WEBM, MKV, AVI (max 200 MB) |
| Output | MP3 audio (VBR ~165 kbps) |
| Engine | ffmpeg libmp3lame |
| Storage | Files deleted immediately after conversion |
| Cost | Free |
Practical Everyday Use Cases
- Turn a recorded lecture or webinar video into an audio file for listening.
- Extract music or dialogue from a video clip for a project.
- Convert a phone-recorded MOV into a shareable MP3.
- Create an audio-only archive of a video podcast.
Pro Tips for Best Results
- Trim the video first if you only need part of the audio — conversion is faster.
- The output keeps the original quality — the source audio quality is what you get.
- For videos you do not own, extract audio only where you have rights to do so.
Common Problems & Solutions
The video has no sound track or uses a rare codec — check it plays sound locally first.
Videos over 200 MB are rejected — compress the video first or trim it.
Longer videos take longer to upload and process — keep the tab open.
Some screen-recordings have silent tracks — play the video and confirm audio exists.
Privacy & Security
100% Client-Side Execution
Your video uploads once over an encrypted connection, is converted in a temp folder, sent back as MP3 and deleted immediately. No copies, no logs, no storage.
Frequently Asked Questions
Everything you need to know about using MP4 to MP3 Converter
MP4, M4V, MOV, WEBM, MKV and AVI — up to 200 MB.
Variable-bitrate (~165 kbps average) via the libmp3lame encoder — a good balance of size and fidelity.
No — the upload and the produced MP3 are both deleted as soon as the file is sent to your browser.
Use the Video Downloader — it lists an audio-only option for supported public videos.
The video stream is dropped entirely; only the compressed audio track is kept.
Related FreeToolsBazaar Tools
Get the audio out of a video?
100% free, browser-based, and private. No installation, registration, or file upload to external servers required.
Start Using MP4 to MP3 Converter