Convert AVI to MP4 in Seconds

Got an AVI that won't play on your phone or upload to YouTube? Profi PDF converts it to MP4 instantly — free, private, zero installs.

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1.5M users
13,529 reviews

How It Works

AVI to MP4 Converter — Convert AVI Video Files to MP4 Online Free | Profi PDF
1
Upload Your AVI. Drag your AVI file into Profi PDF or click to browse. Old home videos, downloaded clips, legacy recordings — any AVI works.
2
Profi PDF Converts It. Our engine converts your AVI into a clean, modern MP4 in seconds. High quality, fast, no settings to mess with.
3
Download Your MP4. Grab your MP4 and you're done. Plays on any phone, Smart TV, browser, or video editor — no more compatibility headaches.

Your Complete Audio & Video Toolkit

Transcribe, convert, extract — everything audio & video, handled in one place.

AI Transcription

Speech to text with speaker labels, timestamps, and 95%+ accuracy.

Format Conversion

MP3, WAV, M4A, OGG, FLAC — convert any audio or video format instantly.

Video to Audio

Extract audio from MP4, YouTube, Zoom recordings, and more.

Lightning Fast

Most files processed in under three minutes. No waiting around.

No Signup
Start instantly
100% Secure
Auto-deleted
Browser-Based
No installs

People Love These Tools

Podcasters, researchers, marketers, and remote teams use our audio & video tools every day.

Feb 15
Finally got my old home videos on my phone
Had years of family videos stuck in AVI that nothing would play. Profi PDF converted them all to MP4 and now they're on my phone and backed up to the cloud. Priceless.
Sandra MüllerInstagram logo
Sandra Müller
Feb 3
YouTube stopped rejecting my uploads
Was uploading AVI files to YouTube and kept getting format errors. Profi PDF converted them to MP4 and everything went through first try. Should've done this ages ago.
Kwame AsanteInstagram logo
Kwame Asante
Jan 26
Fast, clean, no watermarks
Converted a big batch of old AVI clips in one session. Profi PDF was fast, the quality held up perfectly, and there was no watermark or sign-up wall. Exactly what I needed.
Tara LindqvistInstagram logo
Tara Lindqvist
824 people converted files today
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Trusted and Secured by Industry Experts

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Why People Pick Our Audio & Video Tools

Works on Everything Now

AVI is old-school — great in its day, but phones, streaming platforms, and modern editors often choke on it. MP4 is the universal standard. Profi PDF gets you there in one click.

Quality Stays Sharp

Profi PDF converts your AVI to MP4 while keeping the video and audio quality as close to the original as possible. No blurry output, no weird artifacts.

Upload to YouTube & Social

YouTube, Instagram, TikTok — they all prefer MP4. Profi PDF converts your AVI so you can upload straight away without any format rejection nonsense.

Batch Convert the Whole Archive

Got a folder full of old AVI files to modernize? Profi PDF lets you queue them up and convert back to back. No repetitive uploading, no wasted time.

Transcribe the Audio After

Once you have your MP4, run it through Profi PDF AI transcription to pull out subtitles, captions, or a full text transcript. One platform, full workflow.

Encrypted & Auto-Deleted

Your video is locked with encryption on upload and wiped from Profi PDF servers the second conversion is done. Zero data stored, zero risk.

Works on Everything Now

AVI is old-school — great in its day, but phones, streaming platforms, and modern editors often choke on it. MP4 is the universal standard. Profi PDF gets you there in one click.

Quality Stays Sharp

Profi PDF converts your AVI to MP4 while keeping the video and audio quality as close to the original as possible. No blurry output, no weird artifacts.

Upload to YouTube & Social

YouTube, Instagram, TikTok — they all prefer MP4. Profi PDF converts your AVI so you can upload straight away without any format rejection nonsense.

Batch Convert the Whole Archive

Got a folder full of old AVI files to modernize? Profi PDF lets you queue them up and convert back to back. No repetitive uploading, no wasted time.

Transcribe the Audio After

Once you have your MP4, run it through Profi PDF AI transcription to pull out subtitles, captions, or a full text transcript. One platform, full workflow.

Encrypted & Auto-Deleted

Your video is locked with encryption on upload and wiped from Profi PDF servers the second conversion is done. Zero data stored, zero risk.

AVI to MP4 Online

No signup needed. Just pick a tool and go.

Convert AVI to MP4
4.6
1,340 reviews
4.5
13,920 reviews
4.6
4,550 reviews

Frequently Asked Questions

Quick answers about our audio & video transcription and conversion tools.

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AVI to MP4 Converter — Convert AVI Video Files to MP4 Online Free | Profi PDF - Profi PDF