How to Convert Video Online

Drop Your Video

Drag and drop the video onto the box above, or click Choose Files. The request is already filled in: “Convert this video to MP4”. It reads common formats such as MP4, MOV, MKV, WebM, AVI and FLV.

Say the Output Format

Change the request to the format you want: the AI assistant makes MP4, WebM, MKV and MOV, or pulls the sound out as MP3, WAV and other audio formats. Add settings like resolution, frame rate or bitrate if needed, for example “Convert this to WebM in 720p”. For AVI, FLV or TS, use the classic converter.

Convert and Save

The AI assistant converts the video on your own device. When the new file is ready, click Save. Prefer to pick every setting by hand? The classic converter is one click away on this page.

The Most Powerful Online Video Converter

Our online video converter is designed for speed, flexibility, and privacy. Whether you need to convert video to MP4 for better compatibility or change video format to a high-quality MKV, we've got you covered.

As a true movie converter, we support a vast array of input and output formats. You can easily convert MP4 online, transcode AVI to MP4, or prepare your videos for specific devices like iPhones, Android phones, or gaming consoles.

The formats that matter: reads MP4, MOV, MKV, WebM, AVI, FLV and TS; writes all of them, or just the audio as MP3, WAV, FLAC, M4A and more.
Cloud-Free Processing: Your files never leave your browser, ensuring total privacy.
Advanced Settings: Fine-tune your conversion with custom codecs, bitrates, and resolutions.
Nothing to upload: your files stay on your device, up to about 2 GB each (the in-browser engine's memory ceiling), and the classic converter takes as many as you want.

Frequently Asked Questions

What is the fastest video format to convert to?

MP4 with the H.264 codec is typically the fastest and most widely supported format. It provides excellent quality at a relatively small file size.

Can I convert video to audio using this tool?

Yes! You can choose an audio format like MP3 or WAV as your output to extract the audio track from any video file.

Is there a limit on file size for the converter?

There is no upload limit, because nothing is uploaded: files are processed locally in your browser, so large files that upload-based converters reject are fine. The practical ceiling is about 2 GB per file, set by the in-browser engine's memory; very large files work best in a desktop browser. One exception: the AI assistant makes a WebM from an AVI or FLV only up to 512 MB, because that takes an extra copy in memory; MP4, MOV and MKV take them up to the usual ceiling.

Will the converted video have a watermark?

Never. All our tools are free to use and do not add any watermarks to your converted files.

Can I convert MKV to MP4?

Yes, our converter seamlessly handles MKV to MP4 conversion, making your MKV files compatible with almost any device or player.

How do I convert a video for my Android or iPhone?

Choose the MP4 format with the H.264 video codec. This combination is standard for both iOS and Android devices, ensuring perfect playback.

What are the benefits of the H.265 (HEVC) codec?

H.265 (HEVC) offers much better compression than H.264, meaning you get the same quality at roughly half the file size. It's ideal for 4K and high-resolution videos.

Can I convert large 4K video files?

Yes, up to about 2 GB per file. The conversion runs on your own hardware, so there is no upload to wait for; Chrome and Edge are fastest because they use hardware-accelerated decoding.