Video & audio converter
MP4 to MP3 Converter
Pull the audio track out of MP4 videos and save it as MP3. Free, online, no sign-up.
How to convert MP4 to MP3
- Add your files: drag them into the box above, or click "Choose files".
- Click "Convert to MP3" and wait a few seconds while we process them.
- Download your MP3 files. Uploaded files are deleted right away, and converted files are removed from our server after 30 minutes.
Why convert MP4 to MP3?
Converting MP4 to MP3 keeps only the sound of a video, which is perfect for listening to talks, lessons, interviews or your own recordings on the go. MP3 files are small and play on any phone, car stereo or music app. ConvertKiwi uses high-quality variable bitrate encoding (around 190 kbps), so voices and music stay clear.
- You recorded a lecture, meeting or interview on video and only need the audio.
- You want to listen to your own video content like a podcast.
- You need an audio file to edit or to send to someone for transcription.
Tips for the best result
- Only convert videos you own or have permission to use.
- If you plan to edit the audio professionally, MP4 to WAV gives you an uncompressed file.
- For other video formats like MOV, WEBM or MKV, use the MP3 converter, which accepts them all.
About these formats
MP4: The most widely supported video format. It plays on phones, browsers, TVs and social networks, with good quality at a reasonable size.
MP3: The most popular audio format. It compresses sound to a small size while keeping good quality, and it plays on any device.
Frequently asked questions
What quality is the MP3?
We use high-quality variable bitrate (LAME V2, around 190 kbps), which is transparent for most listeners.
Does it keep the full length of the video?
Yes. The MP3 has the same duration as the video.
Can I convert a large MP4?
Yes, up to 100 MB per file. You will see the upload and conversion progress with the time left.