Convert MP4 to M4A
Extract the audio from your MP4 video and save it as M4A. Free, instant, private.
Drop your MP4 video here, or click to browse
Converts MP4 to M4A — .mp4 files only
Why use PixelTools to convert mp4 to m4a
Clean MP4 to M4A conversion
Converts a video container that carries an audio track alongside the picture into AAC-encoded audio, Apple's default for voice memos and iTunes/Apple Music downloads, using ffmpeg's native encoder so the output sounds exactly as intended.
100% private — no upload
Conversion runs entirely in your browser using WebAssembly. Your MP4 file is never sent to a server, stored, or seen by anyone but you.
No account, no watermark
Free to use with no sign-up, no file limits, and no watermark on your M4A output.
Why convert to M4A
plays natively on Apple devices but is rejected by many car stereos, older Android apps, and Windows software
Works on any device
Fully responsive with touch-friendly controls — convert your MP4 file from your phone, tablet, or desktop without installing anything.
Safe for sensitive recordings
Because nothing leaves your device, this is safe to use on phone recordings, screen captures, and downloaded video files or any other recording you can't upload to a third-party server.
Three steps to convert mp4 to m4a
- 1
Drop your MP4 video
Drag and drop your MP4 video onto the page, or click to browse. Nothing is uploaded — the file stays on your device.
- 2
Conversion runs in your browser
A WebAssembly build of ffmpeg decodes the MP4 audio track and re-encodes it as M4A entirely on your device. A progress bar shows the conversion as it runs.
- 3
Download your M4A file
Preview the result right on the page, then click Download to save the M4A file to your device.
Who converts MP4 to M4A?
Whether you're a podcaster, a musician, or just need one file in a different format — PixelTools converts MP4 to M4A instantly in your browser, with no upload and no account needed.
Working with phone recordings, screen captures, and downloaded video files
MP4 files typically come from phone recordings, screen captures, and downloaded video files. Converting to M4A makes them usable in the apps and platforms that actually need them.
Publishing or sharing as M4A
plays natively on Apple devices but is rejected by many car stereos, older Android apps, and Windows software, which is exactly why people convert MP4 to M4A before sharing or uploading.
Editing and production workflows
Podcast editors, video producers, and musicians convert MP4 to M4A to match the format their DAW, NLE, or publishing platform expects.
Reducing file size for sharing
A M4A file is often far smaller and easier to email, message, or upload than the original MP4, especially when only the audio is needed.
Frequently asked questions
Is the MP4 to M4A converter free?
+
Yes, completely free with no limits. Convert as many files as you want. No subscription, no account, no watermark.
Does this tool upload my video to a server?
+
No. The conversion happens entirely in your browser using WebAssembly. Your MP4 video never leaves your device.
Why convert MP4 to M4A?
+
MP4 is a video container that carries an audio track alongside the picture, typically from phone recordings, screen captures, and downloaded video files. Plays natively on Apple devices but is rejected by many car stereos, older Android apps, and Windows software.
Will the audio quality change?
+
Converting to M4A uses a high-quality encoder setting by default, so the difference from the source is minimal for typical listening — but M4A is a lossy format, so extremely detailed A/B comparisons may reveal small differences from an uncompressed source.
Is there a file size limit?
+
Files up to 2GB are supported. Very large files take longer to process since everything runs on your device's CPU rather than a server.
Can I use the converted M4A file commercially?
+
PixelTools does not claim any rights over files you process. The output is yours to use however you like, subject to any rights the original file's owner holds.
How is an M4A from an MP4 different from the video I started with?
+
An MP4 usually already holds AAC audio, the same codec M4A uses, so the result sounds the same as the video's soundtrack. The M4A is just the audio without the picture, which is what Apple Music, iTunes and iPhone ringtone workflows expect.
Convert MP4 to M4A now
Free, instant, no account needed.