Free Online MP4 to MP3 Converter
Change MP4 to MP3 — Quick, Private, and Free
Got an MP4 and just need the audio? This MP4 to MP3 converter pulls the sound track out of any .mp4 file and hands you a clean MP3 — whether it is a phone recording, a downloaded clip, or a screen capture. Everything runs in your browser, so the file never touches a remote server. Drop your MP4, pick a quality setting, and the MP3 is ready in seconds.
Drop files here or click to browse
Supports images, audio, and video files
When You Need to Convert MP4 to MP3
MP4 is the default recording format on nearly every smartphone, camera, and screen recorder. That means most of the video files sitting on your device right now are MP4s. Here is when converting MP4 to MP3 makes life easier.
Phone Videos You Only Need to Hear
Recorded a voice memo as video by accident? Filmed a speech, a recipe walkthrough, or a bedtime story for the kids? Convert that MP4 to MP3 and keep just the audio — it takes up a fraction of the space and plays anywhere, even with the screen off.
Screen Recordings and Online Meetings
Zoom calls, Teams meetings, and screen recordings are almost always saved as MP4. Turning those MP4 files into MP3 lets you review discussions, training sessions, or interviews as audio — perfect for listening on the go without scrubbing through a video timeline.
Downloaded Clips and Saved Content
Saved an MP4 from social media or a learning platform? Extract the MP3 so you can listen offline in any music or podcast app. Changing MP4 to MP3 strips the visuals and leaves you with a lightweight file that fits easily on any device.
Why Convert MP4 to MP3 with videotoaudio.net
There are dozens of MP4 to MP3 tools out there. Most upload your file to a server, hit you with ads, or cap the number of free conversions. Here is why this converter is different.
Your MP4 Stays on Your Device
This MP4 to MP3 converter never uploads your file anywhere. The conversion happens right inside your browser using local processing, so personal recordings and private content remain completely under your control.
Keeps the Original Audio Clarity
MP4 files typically store audio in AAC. The converter reads that stream and encodes it to MP3 at up to 320 kbps. You choose the bitrate — lower for a smaller file, higher when you want the sound to stay as close to the original as possible.
Handle Multiple MP4 Files at Once
Got a batch of MP4 recordings from a trip or a conference? Drag them all in. The converter processes every MP4 to MP3 in parallel, and you can download the results individually or bundled in a ZIP.
Zero Learning Curve
No menus to dig through, no settings panels to configure. Drop an MP4, see the MP3 output option, hit convert. If you can attach a file to an email, you already know how to use this MP4 to MP3 converter.
Converts Right on Your Phone
Recorded something on your iPhone or Android and want the MP3 immediately? Open videotoaudio.net in your mobile browser, pick the MP4 from your camera roll, and save the MP3 back to your device — no app install required.
Always Free — No Catches
No account, no daily limit, no premium upsell. Convert MP4 to MP3 as many times as you want, whenever you want. The tool is free today and it will stay free.
How to Convert MP4 to MP3 — Three Simple Steps
The whole process takes less than a minute, even on a phone.
Open the Converter and Drop Your MP4
Head to videotoaudio.net on any browser. Drag your .mp4 file onto the page — or tap the upload area to select it from your files. You can add several MP4s at once if you have a batch to convert.
Pick Your MP3 Quality
MP3 is preselected as the output format. Choose a bitrate: 128 kbps is fine for speech, 192 kbps works great for most music, and 320 kbps gives you top-tier audio. For multiple files, one click sets the same quality across the board.
Save Your MP3
Tap convert and the MP3 appears within seconds. Download it straight to your device, or use the ZIP option when you have converted several MP4 files at once. Done — your MP4 to MP3 conversion is complete.
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MP4 to MP3 — Frequently Asked Questions
Does this work with MP4 files from an iPhone or Android phone?
Yes. iPhones and Android phones record video in MP4 (or a compatible container like MOV on some iPhones). This MP4 to MP3 converter handles both. Just pick the file from your camera roll or file manager and the audio will be extracted to MP3.
Is converting MP4 to MP3 the same as just renaming the file extension?
Not at all. Renaming .mp4 to .mp3 does not change the actual data inside the file — it will either refuse to play or sound garbled. A proper MP4 to MP3 converter reads the audio stream from the MP4 container and re-encodes it into a valid MP3 file that any player can handle.
How much smaller is the MP3 compared to the original MP4?
It depends on the video, but the difference is dramatic. A 100 MB MP4 video might produce an MP3 that is only 3–5 MB, because the video track (which accounts for most of the file size) is discarded entirely. Converting MP4 to MP3 is one of the fastest ways to reclaim storage.
Can I convert MP4 to MP3 without losing audio quality?
When you select 320 kbps, the MP3 output is virtually indistinguishable from the original audio inside the MP4. Technically MP3 is a lossy format, but at high bitrates the quality loss is inaudible for the vast majority of listeners.
What if my MP4 file has no audio track?
Some screen recordings or animation exports are video-only with no sound. If the MP4 contains no audio stream, the converter will let you know. There is nothing to extract in that case — an MP3 needs audio data to work with.
Can I convert a long MP4 like a full movie or a two-hour lecture?
Yes. Since the conversion runs locally on your device, there is no server-imposed duration limit. A two-hour MP4 will take a bit longer to process than a short clip, but the converter handles files of any length as long as your device has enough memory.
Is this MP4 to MP3 converter private and secure?
Completely. The file is processed inside your browser tab and never sent anywhere. No one — including videotoaudio.net — can see, access, or store your MP4. Once you close the tab, the temporary data is gone.
Can I convert several MP4 files to MP3 in one go?
Yes. Drop multiple MP4 files into the converter and they will all be processed together. You can download each MP3 separately or grab them all as a single ZIP file. Handy when you have a whole folder of recordings to convert.
Why is MP4 to MP3 the most common audio conversion?
Because MP4 is the default video format for smartphones, cameras, and most video platforms, and MP3 is the most universally supported audio format. When people want audio from a video, the MP4 to MP3 path is almost always the one they need. It covers the majority of real-world use cases.
Does the converter work offline after the page loads?
The core conversion engine loads when you first open the page. After that, the actual MP4 to MP3 process does not require an active internet connection — it runs entirely on your device. However, you do need to be online initially to load the page and its resources.