How to use the Video to MP3 Converter
- Add one or more video files (up to 50 MB each).
- Choose the MP3 bitrate: 64, 128, 192 or 320 kbps.
- Click Convert, wait for the progress to reach 100%, then download your MP3 files.
About this tool
This tool reads the audio track from a video file and encodes it as a standard MP3 that plays on phones, computers, car stereos and most music apps. It is useful for saving a lecture, an interview, a voice recording or the soundtrack of a clip you made yourself. It also accepts audio files such as M4A, WAV, OGG and FLAC if you want to convert them to MP3.
Which bitrate should I choose?
| Bitrate | Best for | Approx. size per minute |
|---|---|---|
| 64 kbps | Voice notes, lectures, spoken word | 0.5 MB |
| 128 kbps | Podcasts and everyday listening | 1.0 MB |
| 192 kbps | Music with good quality (default) | 1.4 MB |
| 320 kbps | Highest MP3 quality | 2.4 MB |
MP3 is a lossy format. A higher bitrate cannot add detail that was not in the video's audio, so choosing 320 kbps for a low-quality recording only makes a bigger file.
Private by design
The conversion runs inside your browser. Your video is not uploaded to FormatVolt or any other server. The first time you convert, your browser downloads the converter engine (about 30 MB). It is then stored in your browser cache, so later conversions start faster. Conversion speed depends on your device and the length of the file.
Supported formats
Video: MP4, M4V, MOV, MKV, AVI, WebM, FLV, WMV, 3GP and MPEG. Audio: M4A, AAC, WAV, OGG, Opus and FLAC. If a file has no audio track, the tool tells you instead of producing an empty file.
Tips for better results
- Choose 192 kbps for music and 128 kbps for speech if you want a good balance of size and quality.
- Large files take longer. Close other heavy tabs on slower phones.
- The converter keeps the full length of the audio and resamples it to 44.1 kHz, a standard rate supported everywhere.
Frequently asked questions
Is the video converter free?
Yes. There are no sign-ups, watermarks or daily limits. Each file can be up to 50 MB.
Is my video uploaded anywhere?
No. The audio is extracted inside your browser, so the file never leaves your device.
What is the best bitrate for MP3?
192 kbps is a good default for music. Use 128 kbps for speech or podcasts, 64 kbps for small voice files and 320 kbps for the highest MP3 quality.
Why does the first conversion take longer to start?
The browser first downloads the converter engine, which is about 30 MB. After that it is cached, so later conversions start much faster.
Can I convert a YouTube link to MP3?
No. FormatVolt only converts files you choose from your device. It does not download videos from websites or streaming services.
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Last updated: November 6, 2026