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File converter / Video / Audio / Convert to MP4 / MP3 converter / MP4 to MP3

Convert MP4 to MP3

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Choose file to convert to .mp3
or drag and drop file

You can convert MP4 video files to MP3 as well as to variety of other formats with free online converter. Our service will save audio quiality of your mp3 files choosing the most appropriate bit rate.

How to convert mp4 to mp3?

How to convert mp3 to mp4?
Step 1

Upload mp4-file

Select mp4 file, which you want to convert, from your computer, Google Drive, Dropbox or drag and drop it on the page.
Step 2

Convert mp4 to mp3

Select mp3 or any other format, which you want to convert.
Step 3

Download your mp3-file

Wait till your conversion process will be completed and click download converted mp3 file.

Online and free mp4 to mp3 converter

Fast and easy
Just drop your mp4 files on the page to convert mp3 or you can convert it to more than 250 different file formats without registration, giving an email or watermark.
Don't worry about security
We delete uploaded mp4 files instantly and converted mp3 files after 24 hours. All files transfer with secured an advanced level of SSL encryption.
All in the cloud
You don't need to install any software. All mp4 to mp3 conversions make in the cloud and don't use any resources of your computer.

MPEG-4 Video File

File extension .mp4
File category video
Description The MP4 files (MPEG-4 part 14 files) are the multimedia files used with multiple stations and video players simultaneously. They can store digital audio streams and digital video, and other suitable amounts of data like subtitle tracks. MP4 video format is a widespread file format due to its very own container format. It is also used with multiple platforms such as iTunes, PlayStation, and portable PSP. It is also a popular file format for streaming over the Internet. For instance, YouTube videos have MP4 extension.
Technical details The technical details of MP4 files differ in significant aspects and are unique as well, first released in 2001 under ISO/IEX 14496-1:2001 standards. It uses an AAC encoding to wear off unauthorized users from copying the data. The main purpose is streaming rather than sending video or audio information. MP4 files can be used to store audio streams and text information, subtitles, and still images. At the same time, MPEG format can’t do this. Anyhow the processing of data into MPEG-4 part 14 requires private streams such as the use of hint tracks to include the information.
Programs
Microsoft Windows Media Player
VLC media player
MPlayer
Eltima Elmedia Player
Winamp
Apple QuickTime Player
Apple iTunes
Developer Moving Picture Experts Group
MIME type
audio/mp4
video/mp4

MP3 Audio File

File extension .mp3
File category audio
Description

MP3 (formally MPEG-1 Audio Layer-3 or MPEG-2 Audio Layer-3) is a digital format for storing audio files and audio streaming. MPEG programmers designed the format. It is one of the most required codecs for digital coding. The format is widely used in various file-sharing sites for evaluation downloading.

Due to lossy compression in this audio format, it is possible to compress CD tracks up to 1/10 of their original size while maintaining high playback quality. Moreover, it can be encoded at higher or lower bit rates to adjust the resulting quality. Overtones, which cannot be perceived by a human ear, are removed. Complex algorithms allow for a smaller size of tracks. As a result, one compact disk can contain several hundred songs. MP3 is compatible with all the most popular operating systems and is supported by most modern DVD-players and music systems.

Technical details

Before MP3 introduction, MPEG-1 had been widely used. That format contained not only audio data but images as well. MP3 breaks an audio file into parts of the same length. When the processing is over, each part is packed into its frame. It involves the spectral limit technology that requires a continuous input signal to provide the use of two adjacent structures.

When spectral deleting is over, the file is to be compressed with mathematic methods. If necessary, the compression rate can be changed, even inside the same frame. Files of 128 kbit/s have 11-fold compression. Further reduction of the file size will lead to a significant deterioration in sound quality.

Programs
Microsoft Windows Media Player
VLC media player
MPlayer
jetAudio
Zune
Audacity
Apple iTunes
Plex Media Center
Amarok
Xine
Totem
Developer Moving Picture Experts Group
MIME type
audio/mp3
audio/mpeg3
audio/mpg
audio/mpeg
audio/x-mpeg
audio/x-mpeg-3
audio/mp3
audio/x-mpegaudio
audio/x-mpg
audio/x-mp3

FAQ

❓ How can I convert mp4 to mp3?
Firstly, select a mp4 file you want to convert or drag and drop it. Secondly, select mp3 or any other format you want to convert your file to. Then click convert and wait until your file is converted
⏳ How long should I wait to convert mp4 to mp3?
Video conversion usually takes a few seconds. You will convert mp4 to mp3 very quickly.
🛡️ Is it secure to convert mp4 to mp3 on OnlineConvertFree?
Sure! We delete your uploaded and converted files, so nobody has access to your information. All types of conversion on OnlineConvertFree (including mp4 to mp3) is 100% safe.
📱 Can I convert mp4 to mp3 without software installation?
Absolutely! OnlineConvertFree doesn’t require installation. You can convert any files (including mp4 to mp3) online on your computer or mobile.