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Free video to audio, no upload
Video to audio converter, on your phone or computer
Keep just the sound of a video: a lecture, a class, a speech, an interview or a song you recorded. Pick MP3, M4A or WAV, save all of it or one part, and the video never leaves your device.
- MP3, M4A or WAV, your choice
- Works in your phone's browser
- Nothing to install, no login
Save only part of the sound
Type a time like 1:05.5 or 65.5, drag the handles, or play the video and use the current position.
Keep this tab open until it finishes.
How to convert a video to audio
Pick the video
Tap Choose a video. On a phone this opens your gallery or your files; pick the recording you want the audio from.
Choose the audio type
MP3 at 128 kbps keeps speech clear in a small file. Use 192 kbps or more for music, M4A to keep the sound exactly as recorded, or WAV for an editing app.
Choose the part
To keep one talk or one song from a long video, open Save only part of the sound and mark where it begins and ends.
Save the audio file
Tap Make the MP3, Save the M4A or Make the WAV, whichever you picked, then Download. The file lands with your other downloads.
Want to keep the video but shorten it, or take its sound away? Cut a video or Mute a video.
Which audio format to choose
"Audio" can mean several file types. These three cover nearly every need, and the right setting depends on what the recording is:
| What you are saving | Choose | Size for one hour | Why |
|---|---|---|---|
| A lecture, class, meeting or interview | MP3, 128 kbps | 57.6 MB | Speech stays clear, and the file is easy to send and store |
| A song or performance you recorded | MP3, 192 kbps | 86.4 MB | Music needs more detail than speech |
| Sound to edit or transcribe in another app | WAV | About 691 MB at 48 kHz stereo | Every sample is kept, with nothing compressed |
| The original recording, untouched | M4A | Matches the sound track in the video | Copies AAC sound with no re-encoding |
MP3 opens on nearly every phone, computer and audio app. M4A is the audio-only form of MP4 (MDN): most phones and computers play it, and if a player will not, MP3 is the safe choice.
WAV is for when an editing or transcription app asks for it. It is written as 16-bit sound at the video's own sample rate, decoded once with nothing more taken away, and it is big: on a phone, save a long recording as WAV in parts. Like MP3, it needs Safari 26 or later on an iPhone.
Audio is far smaller than the video
Most of a video file is picture. In our test, a 22.2 MB clip, 20 seconds of 1080p, gave an MP3 of 0.48 MB at 192 kbps, and an M4A of 0.32 MB that copied its 128 kbps AAC sound. An hour-long lecture saved as MP3 at 128 kbps is about 58 MB, small enough to keep many on a phone.
So converting video to audio is also a way to keep a recording you only need to listen to, without the space the video takes, and to send it over a slow or costly mobile connection.
On an Android phone or an iPhone
On Android, open this page in Chrome, tap Choose a video and pick the recording. When you press Download, Chrome saves the audio to your downloads; open the Files app, or Downloads in Chrome's menu, to find it (Google).
On an iPhone, use Safari 26 or later for MP3, the first version that can decode sound for the converter (WebKit); older versions can still save M4A when the sound is AAC. Safari puts downloads in the Downloads folder of the Files app, and the Downloads button next to Safari's search field lists them too (Apple).
Converting uses the phone's own processor, not the internet. Keep the page open until it finishes; a long recording can take a little while on an older phone.
The audio of one part of a long video
A long recording often holds more than you need: a full event when you want one speech, or a class when you want one explanation. This works like an audio cutter for videos. Open Save only part of the sound, play the video, and press Use current position at the start and again at the end. You can also type the times, such as 12:30 and 18:05.
Only that part is saved, and nothing from before or after it is kept in the audio file.
Recordings of other people stay with you
Classes, meetings and family events usually have other people in them. Here your phone or computer does the converting, so the recording is not uploaded to uncrop.si or any other server, and no copy of anyone's voice is left behind there. The audio file also leaves out the location and device details a phone stores in its videos.
This tool opens only files you already have; links from YouTube or other sites will not work.
Questions
How do I convert a video to audio?
Choose the video here, pick MP3 or M4A, and press the button. Then press Download. The audio file is made on your device; nothing is uploaded.
Which is better for audio from a video, MP3 or M4A?
MP3 if you want a file that plays everywhere or a smaller file for speech. M4A if you want the sound exactly as recorded, which is possible when the video's sound is AAC.
Can I convert video to audio on my Android phone?
Yes. Open this page in Chrome, choose the video and save the audio. Find it in the Files app or under Downloads in Chrome's menu (Google).
How much space does the audio take?
MP3 at 128 kbps takes 0.96 MB per minute, about 58 MB per hour. At 192 kbps it is 1.44 MB per minute. The tool shows the size before you convert.
Can I get the audio of just one part?
Yes. Under Save only part of the sound, mark where the part begins and ends; only that stretch becomes the audio file.
Is the audio quality the same as the video?
M4A copies AAC sound exactly, so it is the same. WAV holds the decoded sound with nothing more lost. MP3 is encoded again: 192 kbps or more suits music, and 128 kbps keeps speech clear.
Can I save the audio as WAV?
Yes. Choose WAV to get the sound uncompressed, as 16-bit PCM at the video's own sample rate, which suits editing in another app. It is large: about 11.5 MB per minute for stereo sound at 48 kHz.
Does it need an app or an account?
No. It runs in your browser, with no app to install and no account. It is free with no daily limit.
Sources: Google Chrome Help, Download a file on Android, Apple, Where to find downloads on your iPhone or iPad, WebKit, WebKit features in Safari 26.0, MDN, Media container formats
Open-source code this tool runs on your device: Mediabunny (MPL-2.0), unmodified, reads and writes the video and audio files; LAME (LGPL, source at SourceForge), the MP3 encoder (version 3.100), built without its decoder for the browser by @mediabunny/mp3-encoder (MPL-2.0) and loaded only when the new file is an MP3.
Related tools
Video to MP3 Save the sound of an MP4, MOV, WebM or MKV video as an MP3, or as M4A with no quality loss. New MP4 to MP3 Turn an MP4 into an MP3 at 128 to 320 kbps, on your device and with no upload. 
Cut a video Keep the part you want with a fast cut that copies the video, or an exact cut that starts on any frame. New Mute a video Take the sound track out of a video, so it cannot be turned back on, without re-encoding.