Browser-local by design
The conversion engine works inside your browser without sending media to an upload API.
MP4 to MP3.
Keep the good part.
Turn your video into an MP3, right in your browser.
No media uploads. No account needed.
MP4MP3
Local conversionYour media stays on your device.
Private by defaultBuilt for your browser.Conversion time depends on your file and device.
Your media stays on this device. Conversion runs locally in your browser, so the MP4 file is never uploaded to us.
How to convert MP4 to MP3
Three simple steps. A clear path.
- 01
Choose an MP4 file
Select one MP4 video from your device or drag it into the converter.
- 02
Choose audio settings
Pick an MP3 bitrate. In Advanced settings, optionally set a start and end time to save one audio segment, then convert.
- 03
Play and download
Preview the converted audio and save the MP3 directly from your browser.
Less between you
and your audio.
Just the tools you need to turn a video into something you can listen to.
THE SOUND IS YOURS.
No account required
Choose a file, convert it and download the result without registering or signing in.
Useful audio controls
Select 128, 192, 256 or 320 kbps, with optional sample-rate and channel controls.
One video in.
One audio file out.
This page accepts one MP4 file and outputs MP3. Conventional H.264 MP4 samples with AAC audio have been verified. Other MP4 codec combinations may not decode successfully.
See supported formatsInputMP4 video
OutputMP3 audio
Soft limits500 MiB desktop · 200 MiB mobile
Large files can still exceed the memory available to your device or browser. Results depend on the file, codec and device.
For the parts worth replaying.
Save the spoken audio from a personal MP4 recording.
Create an MP3 copy of a lecture or presentation you are allowed to use.
Prepare portable audio from a compatible camera or screen recording.
Good audio starts
with the source.
A higher MP3 bitrate usually keeps more detail, but it also creates a larger file. The 192 kbps default is a practical middle ground; 128 kbps is smaller, while 256 and 320 kbps use more space.
Converting cannot restore detail already lost in the source. Sample-rate and channel changes do not turn low-quality audio into lossless audio.
A guide to MP3 quality128kbps
DEFAULT
192kbps256kbps
320kbps
Can I save only part of the audio?
Yes. After choosing a file, open Advanced settings and enable Trim audio. Enter start and end times in seconds or hh:mm:ss; the segment must be at least 0.1 seconds long and within the video. If the browser cannot read its length, you can still convert the complete file. Trimming does not bypass input size or memory limits.
Is my MP4 uploaded?
No. The selected media is processed locally in your browser and is not sent to our servers.
Which MP4 files are supported?
This homepage accepts MP4 containers only. We have verified conventional H.264 MP4 samples with AAC audio, but browser memory and codec compatibility can vary by file and device.
Which MP3 bitrate should I choose?
192 kbps is a balanced default for many recordings. Lower bitrates create smaller files; higher bitrates create larger files but cannot restore quality already lost in the source.
How long does conversion take?
Conversion time depends on the file size, media structure, device performance and browser. There is no fixed speed guarantee.
Are MOV and WebM files accepted here?
No. This page is specifically for MP4 to MP3 conversion and clearly rejects MOV, WebM and other containers.
A little more know-how.
All guides01
MP3 Bitrate: 128 vs 192 vs 320 kbps
A practical way to choose MP3 bitrate without treating one number as universally best.
Read guide02
How to Extract Audio Without Re-encoding
Understand stream copy, compatible output containers and the cases that still need transcoding.
Read guide03
MP4 vs MOV vs WebM: Containers and Codecs
Why a file extension identifies a container, not every codec combination that might be inside it.
Read guide04
Why Video to MP3 Conversion Fails
A symptom-based checklist for common local video-to-audio conversion failures.
Read guide05
How to Extract Audio from a Video on iPhone
From choosing a video to finding your download in Files, with MP3 and original-audio options.
Read guide06
How to Convert MOV to MP3 on Mac
Use a MOV from Finder or Photos, save an MP3, or keep compatible AAC audio without another encode.
Read guide07
How to Convert a WebM Browser Recording to MP3
Convert a saved browser recording, find the download and distinguish a missing audio track from recorded silence.
Read guide