MP4 Converter
Convert MP4 video files to WebM, MOV, MKV, AVI, FLV and WMV and 18 more formats — free, in batches, files up to 10 GB, with no sign-up and no watermark.
Drop your MP4 file
Choose the format you need
Download the result
Choose file
or drag & drop — video files
Free · Unlimited · No sign-up · Max 10 GB
Your privacy is our mission. Most files are converted right in your browser and never leave your device. Only large files, or formats a browser cannot process, are sent to our server over an encrypted connection — they are never stored, never shared, and deleted as soon as your download is ready.
What Is an MP4 File?
MP4 is the default video format of phones, cameras, browsers and social networks. It wraps compressed video and audio — usually H.264 and AAC — in a container almost every device can play. MP4 is a container rather than a compression method — container, usually H.264 or H.265 video with AAC audio. What is inside decides the quality.
MP4 Facts
| Full name | MPEG-4 Part 14 |
|---|---|
| File extension | .mp4 |
| Type | Video |
| How it stores data | Container, usually H.264 or H.265 video with AAC audio |
| Created by | Moving Picture Experts Group (ISO/IEC), 2001 |
| Best for | sharing, uploading and playing video on any device |
| Watch out | it holds fewer codec and subtitle types than MKV |
| Opens with | every phone, browser, TV and media player |
How to Open an MP4 File
A .mp4 file opens with every phone, browser, TV and media player. If none of those is at hand — or the file has to go into a program, device or website that refuses MP4 — convert it: WebM, MOV and MKV are the usual choices.
Convert MP4 to Another Format
Convert Other Formats to MP4
MP4 Compared
Frequently Asked Questions
What is an MP4 file?
MP4 is the default video format of phones, cameras, browsers and social networks. It wraps compressed video and audio — usually H.264 and AAC — in a container almost every device can play.
How do I open a .mp4 file?
With every phone, browser, TV and media player. If your device or program does not accept it, convert the file to a format it does.
How do I convert an MP4 file?
Drop the file into the converter on this page, choose the target format — WebM, MOV, MKV, AVI and FLV and others — and press Convert. It is free, there is no account and several files can be converted at once.
Is MP4 lossy or lossless?
MP4 is a container rather than a compression method — container, usually H.264 or H.265 video with AAC audio. What is inside decides the quality.
What is MP4 good for, and what are its limits?
Best for: sharing, uploading and playing video on any device. Watch out: it holds fewer codec and subtitle types than MKV.
Is the MP4 converter free, and how big can the files be?
It is free, with no account, no watermark and no daily limit. Files can be up to 10 GB each.
Which formats can be converted to MP4?
WebM, MOV, MKV, AVI, FLV, WMV, 3GP, TS, OGV and VOB.