Convert video to MP4

Free online conversion of 3GP, AVI, FLV, GIF, MKV, MOV, MPG, WEBM, WMV to MP4

Local-first

Drop files here

or click to select files. Supports MP4, AVI, MPG, MOV, FLV, 3GP, WEBM, MKV, WMV, GIF.

Our multi-format video to MP4 converter tool is the ideal solution for processing various video files, supporting multiple formats such as AVI, MPG, MOV, FLV, 3GP, WEBM, MKV, WMV, GIF and more. With this tool, you can easily convert video files to the widely compatible MP4 format, ensuring a high-quality playback experience. Multi-format compatibility: Supports a variety of common video formats including AVI, MPG, MOV, FLV, 3GP, WEBM, MKV, WMV, and GIF to meet your needs for processing various video files. High-quality output: No matter what format the original video is in, this tool can convert it into high-quality MP4 files to meet your high standards for video playback quality.

Convert any video to MP4 online

MP4 (H.264) is the most widely supported video format — it plays on phones, browsers, TVs, editors and social platforms without extra codecs. This free tool converts AVI, MOV, MKV, FLV, WMV, 3GP, WEBM and MPG files to MP4 right in your browser, so your clips work everywhere.

Runs in your browser, files stay private

Conversion uses WebAssembly (ffmpeg.wasm) and happens entirely on your device — nothing is uploaded to a server. There is no sign-up, no watermark and no file-count limit, so you can convert as many videos to MP4 as you need.

Control quality, resolution and size

You can adjust the video bitrate, resolution, frame rate and audio settings before converting, which lets you balance MP4 quality against file size — useful for shrinking a large recording or preparing a clip for upload.

Frequently asked questions

How do I convert a video to MP4?

Open the tool, drop in your AVI, MOV, MKV, FLV, WMV, 3GP, WEBM or MPG file, keep MP4 as the output and click convert. The MP4 is produced in your browser and downloads immediately — no upload needed.

Is the video to MP4 converter free?

Yes, it is completely free with no sign-up, no watermark and no limit on the number or size of files you convert.

Why convert to MP4?

MP4 with H.264 is the most compatible format available — it plays on virtually every phone, browser, TV and editor, which makes it the safest choice for sharing, uploading or archiving video.

Are my videos uploaded to a server?

No. All processing runs locally in your browser through WebAssembly, so your videos never leave your device — safe even for private footage.

Can I convert MOV or MKV to MP4?

Yes. The tool converts MOV, MKV, AVI, FLV, WMV, 3GP, WEBM and MPG to MP4, and you can set the bitrate and resolution to control the output quality.

Will converting to MP4 reduce quality?

Converting re-encodes the video, so some change is possible, but a higher bitrate keeps the MP4 visually close to the source. You can tune the settings to favour quality or a smaller file.