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Convert Videos Online Free – Change Format, Resolution & More

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You can convert your videos between MP4, MOV, AVI, WEBM, MPEG, and OGV, right here in your browser, and for free. Our conversion tool also lets you change your video's resolution (from 360p right up to 3072p) during conversion.

Yes, you can do this without install any software or creating an account. No, your video won't have a watermark when it's been converted.

How to Convert a Video

  1. Upload your video — Click "Select Video" or drag and drop your file. The tool accepts most common video formats as input.
  2. Choose the output format — Pick from: MP4, MOV, MPEG, AVI, OGV, or WEBM.
  3. Set the resolution (optional) — By default, the original resolution is kept. If you want to change it, select a new resolution from the dropdown: 360p, 480p, 600p, 768p, 1024p, 1152p, 1200p, 1280p, 1440p, 1600p, 2048p, 2560p, or 3072p.
  4. Click "Convert Video" — Wait for processing, then download your file.

Tip: If you just need to play a video on a different device and don't know which format to pick, choose MP4. It works on practically everything.

Which Format Should You Use?

Choosing the right format depends on what you're doing with the video. Here's a quick guide:

Format Best for Why
MP4 Everything — sharing, uploading, playback Works on all devices, all platforms, all browsers. Smallest file size for the quality. If in doubt, pick MP4 — it's the no-brainer.
MOV Apple devices, Final Cut Pro, professional editing Apple's native format. Slightly larger files than MP4 but preferred in Apple/pro editing workflows.
WEBM Web embedding, HTML5 video players Google's open format. Excellent compression. Used by YouTube internally. Best choice for embedding video on websites.
AVI Legacy Windows software, older devices Older Microsoft format. Large file sizes. Only use if your software specifically requires AVI.
MPEG DVD authoring, older media players Standard format for DVDs and some broadcast systems. Use when compatibility with legacy systems matters.
OGV Open-source projects, Linux Fully open-source format (Ogg Theora). Niche use — mostly relevant for open-source software and Linux environments. Most people will never need this.

Container vs. Codec — What's the Difference?

When people say "convert to MP4," they usually mean changing the container — the wrapper that holds video, audio, and metadata together. The codec is the compression method used inside that container (like H.264 or H.265 for video, AAC for audio).

Think of it this way: the container is the box, and the codec is how the contents are packed inside it. Most playback issues happen because a device doesn't support the container, not the codec. That's why converting to MP4 (the most universally supported container) fixes most compatibility problems.

Common Conversion Scenarios

Convert MOV to MP4

This is the most common conversion. iPhones, iPads, and Macs record video in MOV format. If you need to share that video with someone on Android, Windows, or upload it to a platform that prefers MP4, converting MOV → MP4 solves the problem instantly. File size usually drops too, since MP4 uses more efficient compression.

Convert AVI to MP4

AVI files are typically large because the format uses minimal compression. Converting AVI → MP4 can reduce file size significantly (often 50–80% smaller) while keeping the same visual quality. This is useful when you have old video files taking up storage space.

Convert WEBM to MP4

WEBM plays well in browsers but many desktop video players and mobile apps struggle with it. If you downloaded a WEBM file and can't play it, convert to MP4 for universal compatibility.

Convert MP4 to WEBM

Going the other direction — if you're embedding video on a website and want smaller file sizes with native HTML5 support, WEBM is the better choice for web use.

Change Video Resolution

Not just format conversion — you can also scale the resolution up or down during conversion. Use cases:

  • Downscale to save space — Converting a 4K video to 1080p (1280p in our tool) can cut file size by 60–75%.
  • Match a screen size — Preparing video for a specific display or device.
  • Reduce for upload — Some platforms process videos faster when they're not unnecessarily large.

When Should You Convert a Video?

  • "I can't play this file" — The device or player doesn't support the format. Convert to MP4.
  • "The file is too large" — Convert to MP4 or WEBM and/or reduce the resolution. For more aggressive compression, use our Video Compressor
  • "I need this for a website" — Convert to WEBM for best web performance, or MP4 for widest browser support.
  • "I'm editing in Final Cut Pro — Convert to MOV.
  • "I'm uploading to social media" — MP4 is accepted everywhere. Instagram, TikTok, YouTube, Facebook — all prefer MP4.
  • "My iPhone video won't play on my friend's Android" — Classic MOV → MP4 conversion.

What Makes This Tool Different?

  • Resolution control — Change resolution from 360p to 3072p during conversion. Most free online converters only change the format.
  • 6 output formats — MP4, MOV, AVI, WEBM, MPEG, OGV.
  • No signup — Upload and convert immediately.
  • No watermark — Clean output, free tier.
  • No software — Works in any modern browser.
  • Privacy-first — Videos encrypted, never shared, deleted after 24 hours.

Related Tools

  • Video Compressor — If your main goal is reducing file size (not just changing format), the compressor gives you more control over output size and quality.
  • Video to MP3 — Need to extract audio from a video? Use the dedicated audio extraction tool instead of converting the video.
  • Video Trimmer — Cut your video to the right section before converting. Shorter input = faster conversion.
  • Change Video Speed — Speed up or slow down before converting to final format.
  • Resize for Instagram — After converting to MP4, resize to the correct aspect ratio for Reels, Stories, or Feed.
  • Video to GIF — Convert a short video clip into an animated GIF.

Frequently Asked Questions

How do I convert a video to MP4 online for free? display answer hide answer Upload your video, select MP4 as the output format, click "Convert Video," and download the result. No signup or watermark.
How do I convert MOV to MP4? display answer hide answer Upload your MOV file (recorded on iPhone or Mac), select MP4 as the target format, and click Convert. The output MP4 plays on virtually all devices and platforms.
Can I change video resolution during conversion? display answer hide answer Yes. Select a new resolution from the dropdown — from 360p up to 3072p — or keep the original. Useful for reducing file size or matching a specific screen size.
What video formats are supported? display answer hide answer Output formats: MP4, MOV, AVI, WEBM, MPEG, OGV. The tool accepts most common video formats as input, including MKV, FLV, WMV, and others.
Which format should I choose? display answer hide answer MP4 in most cases. It works on all devices, all platforms, all browsers, and gives the best balance of quality and file size. Use MOV for Apple/editing workflows, WEBM for web embedding, AVI only if required by legacy software.
Does conversion reduce video quality? display answer hide answer Re-encoding between formats can cause minimal quality loss. For the best results, keep the original resolution and convert to MP4 (H.264). Converting from a low-quality format to a higher-quality one will not improve the original quality — you can't add detail that wasn't there.
What's the difference between converting and compressing? display answer hide answer Converting changes the format (container). Compressing reduces file size by lowering bitrate or resolution. This tool does conversion (and optional resolution change). For dedicated compression with more control, use our Video Compressor.
Is this tool free? display answer hide answer Yes — free for videos under 30 seconds. No signup, no watermark. Longer videos are available with premium access.
What is the difference between a container and a codec? display answer hide answer A container (MP4, MOV, etc.) is the file format — the wrapper that holds video, audio, and metadata. A codec (H.264, VP9, etc.) is the compression method used to encode the video data inside. When you "convert a video," you're changing the container and sometimes re-encoding with a different codec.
Can I convert multiple videos at once display answer hide answer Currently, the tool processes one video at a time. Upload, convert, download, then repeat for the next file.