Key facts
- Input
- MP4, MOV and M4V in every modern browser; WEBM and MKV in Chrome, Edge and Firefox (Safari reads WEBM but not every MKV)
- Output
- MP3 at 128, 192 (default), 256 or 320 kbps
- File size
- MP4, MOV and M4V: no fixed cap — only the audio track is read, so long 4K and HEVC videos work. WEBM and MKV are decoded whole: up to about 400 MB on a computer and 200 MB on a phone.
- Works on
- Safari on iPhone and iPad, and current Chrome, Edge, Firefox and Safari on Windows, Mac and Android
- Privacy
- Converted inside your browser. The file is never uploaded to a server.
- Price
- Free. No sign-up, no watermark, no daily limit.
What people turn into MP3
- Lectures, webinars and meetings — listen on a commute or at the gym. At 128 kbps an hour of speech is about 58 MB as an MP3, a fraction of the video.
- Interviews and podcasts recorded on camera — an MP3 is what most transcription services and audio editors ask for.
- Music videos you made or own — a rehearsal, a gig filmed on your phone, your own track's video.
- A voice note recorded as a video — keep the words, drop the picture and most of the file size.
Format by format
- MP4, M4V and MOV — only the audio track is read, so there is no fixed size limit and phone videos of any length work. iPhone recordings have their own guide: MOV to MP3; for plain MP4 files see MP4 to MP3.
- WEBM — common for browser and screen-capture downloads. Decoded whole, so keep it under about 400 MB on a computer and 200 MB on a phone. Works in Safari, Chrome, Edge and Firefox.
- MKV — decoded whole with the same size limits. Chrome, Edge and Firefox read most MKV files; Safari does not read every MKV, so use a computer with Chrome if one fails.
- AVI, WMV and FLV — browsers cannot read these containers. Convert the video to MP4 first, then extract the MP3 here.
Only convert what you have the right to use
This tool converts video files that are already on your device; it does not download anything from YouTube or other websites. Converting your own recordings, or videos you have permission to use, is the safe rule.
Private conversion
Your file is opened by your own browser and converted on your device. Nothing is uploaded, so there is no queue, no file-size quota and no copy left on someone else's server. You can even disconnect from the internet after the page has loaded and the conversion still works.
By Furkan Kaya, developer of File Converter App · Updated