AVI to MP4 converter
Turn your AVI into a clean, ready-to-use MP4 in a couple of clicks – no software to install, nothing to sign up for.
Convert AVI to MP4
Drop your files to try StandardsPDF. This tool is available in the full workspace.
Keeps the video stream and audio track in sync
Lets you pick a quality preset to balance size and clarity
Batch several AVI files in a single conversion
Downloads a ready-to-use MP4 you can share immediately
How it works
Convert AVI to MP4 in 3 steps
Select the AVI you want to convert
Start the conversion – most finish in seconds
Grab your new MP4, 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 AVI to MP4?+
Upload your AVI file (or drag it onto the box above), wait a few seconds while StandardsPDF converts it in your browser, then download the MP4. There is nothing to install and no account required.
Is converting AVI to MP4 free?+
Yes. AVI to MP4 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 MP4 keep the quality of my AVI?+
StandardsPDF aims for the highest fidelity the MP4 format allows, so your video comes through looking as close to the original as possible. Some format-specific details may adapt where MP4 works differently to AVI.
Will the audio from my AVI stay in sync in the MP4?+
Yes – when converting AVI to MP4 the audio track is muxed back with the video so playback stays perfectly in sync.
Can I convert AVI to MP4 on my phone?+
Yes – the AVI to MP4 converter is fully responsive and works in Safari, Chrome and other modern browsers on iOS, Android and iPadOS.
How long does a AVI to MP4 conversion take?+
Most AVI files convert to MP4 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 AVI file kept private during AVI to MP4 conversion?+
Yes. Your AVI is processed in an isolated worker, never shared, and permanently deleted from our servers within 60 minutes. Most AVI to MP4 conversions happen right in your browser.
Do I need to install anything to convert AVI to MP4?+
No. Converting AVI to MP4 runs entirely in the browser – no desktop software, no extensions and no account for the free tier.