Video Converter

Convert MP4, MOV, AVI, MKV and more.

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How to use Video Converter

1
Pick the converter for the video format you have or want: MP4, MOV, WebM, MKV, AVI, GIF.
2
Drop your clip into the upload area — files are processed locally with WebAssembly.
3
Choose resolution (1080p, 720p, 480p), bitrate, or a social-media preset (Instagram, TikTok, WhatsApp).
4
Watch the progress bar and download the converted video when it finishes.

Key features

Convert between MP4, MOV, WebM, MKV, AVI, and GIF without re-uploading
Social-ready presets for YouTube, Instagram, TikTok, WhatsApp, and Twitter/X
Trim, crop, and resize in the same workflow as conversion
Hardware-accelerated H.264 encoding for fast turnaround
Extract audio (MP3) or a single frame (JPG) from any video
Privacy-first: clips stay on your device whenever the format allows

Frequently asked questions

What's the best format for sharing video on the web?

MP4 with H.264 video and AAC audio plays everywhere — browsers, phones, smart TVs, social platforms. Use WebM (VP9) when you want smaller files for self-hosted sites.

How do I convert MOV to MP4 without losing quality?

MOV to MP4 re-muxes the H.264 stream when possible (lossless and instant). If re-encoding is required, we use H.264 at the original bitrate.

Can I convert a video to MP4 from my phone?

Yes. Open the converter in Safari or Chrome on iOS/Android, pick the file from your camera roll, and download the result back to your device.

What's the maximum video size I can convert?

There's no hard cap. Most modern phones and laptops handle clips up to 2–4 GB; longer files work but take more time.

How do I convert a video into a GIF?

Video to GIF lets you pick start/end time, frame rate (10–30fps), and width. Tip: keep GIFs under 5 seconds and 480px wide for best quality-to-size ratio.

Will converting reduce my video quality?

Format changes that re-encode lose a tiny amount of quality. Choose the 'High quality' preset or match the original bitrate to keep the loss invisible.

How do I trim a video before converting?

Use Trim Video first to set start/end points, then run the converter on the trimmed file.

Can I convert video for Instagram Reels or TikTok?

Pick the social preset — output is 9:16 vertical, 1080×1920, H.264 MP4 with platform-friendly bitrate.

How do I extract MP3 audio from a video?

Video to MP3 strips the audio track and exports a 128/192/320 kbps MP3 — no re-encoding when the original is already AAC-LC.

Why is my converted video larger than the original?

Some sources (e.g. HEVC from iPhone) compress better than H.264. Use the 'Smaller file' preset or set a lower bitrate to shrink the output.

Does the converter work offline?

Once the page is loaded, conversion runs entirely in your browser. No connection is required during processing.

Can I convert MKV to MP4 with subtitles?

Yes — embedded subtitle tracks are preserved. We can also burn them into the video on request via the 'Hardcode subtitles' option.

How do I convert WebM to MP4 for iMovie or Premiere?

WebM to MP4 outputs H.264 + AAC, which both editors import natively. No additional conversion is needed.

Is video conversion really free?

Yes — no signup, no watermark, no daily limits. Tools Lab PRO is funded by optional Pro features, not by gating free conversions.

Are my videos uploaded to a server?

Format-conversion runs in your browser. Heavy re-encodes may use a transient processing service for speed; nothing is stored after download.

How do I rotate a video that recorded sideways?

Use the rotate option in Trim Video or the converter — choose 90, 180, or 270 degrees and export. The metadata is also corrected so players show the right orientation.