MP4 to M4A converter
Convert MP4 to M4A online for free, with the layout and quality you'd expect from a desktop app but none of the setup.
Convert MP4 to M4A
Drop your files to try StandardsPDF. This tool is available in the full workspace.
Preserves bitrate and channels for clean playback
Handles long recordings and full albums in one job
Batch several MP4 files in a single conversion
Downloads a ready-to-use M4A you can share immediately
How it works
Convert MP4 to M4A in 3 steps
Select the MP4 you want to convert
Start the conversion – most finish in seconds
Grab your new M4A, ready to use
Private by default
Files are encrypted in transit and deleted within 60 minutes.
Fast
Most jobs finish in under 10 seconds. No queueing.
No signup on free tier
5 documents per day, no credit card required.
FAQ
Frequently asked questions
How do I convert MP4 to M4A?+
Upload your MP4 file (or drag it onto the box above), wait a few seconds while StandardsPDF converts it in your browser, then download the M4A. There is nothing to install and no account required.
Is converting MP4 to M4A free?+
Yes. MP4 to M4A conversion is free on the StandardsPDF free tier – no watermark, no signup, and no credit card. A Pro tier lifts the file-size and daily limits if you need more.
Will the M4A keep the quality of my MP4?+
StandardsPDF aims for the highest fidelity the M4A format allows, so your video comes through looking as close to the original as possible. Some format-specific details may adapt where M4A works differently to MP4.
Can I choose the bitrate when converting MP4 to M4A?+
On the free tier StandardsPDF picks a clean default bitrate for your M4A; Pro lets you set the exact bitrate and sample rate for the MP4 to M4A conversion.
How long does a MP4 to M4A conversion take?+
Most MP4 files convert to M4A in a few seconds. Larger or higher-resolution files take a little longer, but there is never a queue on the free tier.
Is my MP4 file kept private during MP4 to M4A conversion?+
Yes. Your MP4 is processed in an isolated worker, never shared, and permanently deleted from our servers within 60 minutes. Most MP4 to M4A conversions happen right in your browser.
Do I need to install anything to convert MP4 to M4A?+
No. Converting MP4 to M4A runs entirely in the browser – no desktop software, no extensions and no account for the free tier.
What is the maximum MP4 file size I can convert to M4A?+
Up to 100 MB per MP4 on the free tier and 2 GB on Pro. If your MP4 is larger, split it first or upgrade for the higher limit.