Browser-local by design
The conversion engine works inside your browser without sending media to an upload API.
MP4 to MP3.
Keep the sound.
Leave the video.
Turn an MP4 into an MP3 for listening, sharing or your next project. Choose a file to get started.
No media uploads Free, no signup
MP4 videoMP3 audio
See what you can make START WITH YOUR FILE
MP4MP3
Local conversionYour media stays on your device.
Private by default192 kbps by defaultOptional trimming · 128–320 kbps
Your file. Your device.
LOCAL PROCESSINGYour media stays on this device. Conversion runs locally in your browser, so the MP4 file is never uploaded to us.
A SIMPLE WORKFLOW
From video to audio. In three steps.
Choose. Convert. Keep.
- 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.
BUILT AROUND YOUR AUDIO
Less between you and your audio.
A lecture for your commute. An interview to review. A sound to use in your next edit. Start with the file you already have.
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.
KNOW YOUR FORMAT
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.
Large files can exceed your browser’s available memory. Results depend on the file, codec and device.
- INPUT
- MP4 video
- OUTPUT
- MP3 audio
- STARTING POINT
- 192 kbps by defaultOptional trimming · 128–320 kbps
- INPUT SOFT LIMIT
- 500 MiB desktop200 MiB on mobile. Available memory may be lower.
LESS VIDEO. MORE POSSIBILITY.
What do you need
from your video?
A lesson for the commute. An interview to revisit. Start with the video you already have.
THE RESULT
Take the lesson on your next walk
Turn a saved course recording into an audio companion. Revisit the explanation without keeping the video on screen.
Settings & steps
- 192 kbps
- Sample rate: Auto
Choose your MP4 and keep the default 192 kbps. Convert, preview the audio, then download the MP3 for a compatible player.
Best for spoken lessons that make sense without the slides.
Tested input: H.264 video + AAC audio
THE RESULT
Keep just the answer that matters
Pull one useful answer out of a longer interview. Keep a short reference clip ready for your next writing session.
Settings & steps
- Trim: 00:30–01:15
- 192 kbps
Open Advanced settings, enable Trim audio and enter 00:30 to 01:15 for a recording at least that long. Convert and download your excerpt.
Example times. Set the range to the part you want to keep.
Tested input: H.264 video + AAC audio
THE RESULT
Give your voice recording a smaller home
Make an MP3 of a spoken video message for someone who only needs the audio. Choose mono when a single channel is enough.
Settings & steps
- 128 kbps
- Channels: Mono
Choose 128 kbps, then set Channels to Mono in Advanced settings. Convert and listen before downloading and sharing the file yourself.
Mono combines the source channels; it does not remove noise.
Tested input: H.264 video + AAC audio
Your file. Three steps. Done.
Choose a video. Convert. Download your audio.
Illustrative workflows. Use a local file you own or have permission to process.
A LITTLE CONTROL GOES A LONG WAY
Good audio starts
with the source.
A higher MP3 bitrate usually keeps more detail, but creates a larger file. Start at 192 kbps for a practical middle ground, or choose the setting your player or project needs.
Conversion cannot restore detail already lost in the source. A new sample rate or channel setting cannot turn low-quality audio into lossless audio.
A guide to MP3 qualityYOUR MP3, YOUR CHOICEFind your balance.
Smaller file More audio data
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.
GOOD TO KNOW
A little more know-how.
01020304050607
MP3 Bitrate: 128 vs 192 vs 320 kbps
A practical way to choose MP3 bitrate without treating one number as universally best.
How to Extract Audio Without Re-encoding
Understand stream copy, compatible output containers and the cases that still need transcoding.
MP4 vs MOV vs WebM: Containers and Codecs
Why a file extension identifies a container, not every codec combination that might be inside it.
Why Video to MP3 Conversion Fails
A symptom-based checklist for common local video-to-audio conversion failures.
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.
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.
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.