FormatDrop
MP4 Converter

Free MP4 Converter Online

Convert MOV, MKV, AVI, WebM, or WMV to MP4 — or convert MP4 to GIF, MP3, WebM, MOV. Runs in your browser with ffmpeg. No upload, no waiting on a server.

MP4MOVMKVAVIWebMWMVGIFMP3

Convert to MP4

MKV→MP4
WMV→MP4
GIF→MP4
WEBM→MP4
MOV→MP4
AVI→MP4

Convert MP4 to other formats

MP4→AVI
MP4→GIF
MP4→MP3
MP4→WEBM
MP4→WAV
MP4→MOV

Browser ffmpeg

Full H.264, H.265, VP9 support — large file handling up to 500 MB for Pro.

No upload

Your video never leaves your device — nothing sent to a server.

GIF + audio too

MP4 to GIF for Slack/Discord, MP4 to MP3 for audio extraction.

Why MP4 is the universal video format

MP4 (MPEG-4 Part 14) is a container format — it holds video, audio, subtitles, and metadata in a single file. The key is what goes inside: H.264 video + AAC audio is the combination that every device and platform accepts without complaint. Instagram, TikTok, YouTube, Twitter, LinkedIn, iMessage, WhatsApp — they all expect MP4/H.264.

MKV is popular for downloaded video because it supports multiple audio and subtitle tracks, but it fails on most upload flows and won't play on iOS at all. MOV is Apple's container, great on Mac but problematic on Windows and Android. AVI is Microsoft's older format — still widely distributed but not supported natively by most web platforms. Converting any of these to MP4 resolves the problem instantly.

MP4 to GIF is one of the most common conversions online — short clips for Slack, Discord, GitHub comments, and Reddit all work better as GIF than as a video embed. MP4 to MP3 is the quick way to rip audio from a recorded meeting, YouTube download, or music video. Both run in your browser here, free, with no upload.

Common questions

Why should I convert video to MP4?
MP4 with H.264 is accepted by every platform — Instagram, TikTok, YouTube, Twitter, LinkedIn, iMessage, WhatsApp. MKV, MOV, and AVI work fine on desktops but fail silently on most upload flows and mobile devices.
Will converting to MP4 reduce video quality?
Container-only conversions (MKV to MP4 when both use H.264) are lossless. Re-encoding (AVI with an old codec, or WMV) applies compression — we use a high-quality preset to minimise visible loss.
How do I convert MP4 to GIF?
Use the MP4 to GIF converter — drop your clip, set loop and frame rate, and get an animated GIF back instantly. Best for short clips under 10 seconds; longer clips create very large GIF files.
Can I extract audio from an MP4?
Yes. Use the MP4 to MP3 converter to pull the audio track as MP3, or MP4 to WAV for a lossless audio file. The video is never re-encoded — just the audio stream is extracted.

Also try

Video ConverterMP3 ConverterGIF CreatorMKV to MP4