MP4 to MP3 converter
Upload a MP4, get a polished MP3 back in seconds. StandardsPDF handles the conversion in your browser so your files stay yours.
Convert MP4 to MP3
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 MP3 you can share immediately
How it works
Convert MP4 to MP3 in 3 steps
Upload or drag in your MP4 file
Choose your output options if you need them
Download the finished MP3
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 MP3?+
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 MP3. There is nothing to install and no account required.
Is converting MP4 to MP3 free?+
Yes. MP4 to MP3 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 MP3 keep the quality of my MP4?+
StandardsPDF aims for the highest fidelity the MP3 format allows, so your video comes through looking as close to the original as possible. Some format-specific details may adapt where MP3 works differently to MP4.
Can I choose the bitrate when converting MP4 to MP3?+
On the free tier StandardsPDF picks a clean default bitrate for your MP3; Pro lets you set the exact bitrate and sample rate for the MP4 to MP3 conversion.
How long does a MP4 to MP3 conversion take?+
Most MP4 files convert to MP3 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 MP3 conversion?+
Yes. Your MP4 is processed in an isolated worker, never shared, and permanently deleted from our servers within 60 minutes. Most MP4 to MP3 conversions happen right in your browser.
Do I need to install anything to convert MP4 to MP3?+
No. Converting MP4 to MP3 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 MP3?+
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.