Explore All Tools
VIDEO TOOLS

Convert video to MP4, WebM, MOV

Switch between common video formats without losing quality. Drop a file, pick a target format, and download the result. Everything stays on your device.

PrivateIn-browserUnlimited

Drop file here

or click to browse files

MP4, WebM, MOV, MKV, AVI up to 500 MB

01Why this converter

Any video, the right format.

Four reasons creators, designers, and archivists keep this page open instead of installing HandBrake.

  • 01

    MP4, WebM, MOV, MKV — any direction

    Pop a video in, pick the format you actually need on the other side. The tool handles the codec swap with sensible defaults.

  • 02

    FFmpeg, in the browser

    The same FFmpeg that powers half the video tools on the planet, running locally via WebAssembly. No installer, no command line.

  • 03

    Plays everywhere

    MP4 output uses H.264 + AAC and the +faststart flag — meaning it plays in any browser, on every phone, in any inbox preview.

  • 04

    Footage stays with you

    Internal recordings, client edits, family clips — they all convert locally. Wirelogs never gets a copy of the file.

02How it works

Three steps to a compatible video.

  1. Drop video
    clip.mov84 MB · 0:48

    Step 1Drop the video

    Drag in an MP4, MOV, WebM, MKV, AVI, or M4V up to 500 MB. A preview loads while the tool reads the duration.

  2. Format
    MP4WebMMOVMKV

    Step 2Pick the output format

    MP4 for compatibility, WebM for smaller web files, MOV for Apple workflows, MKV when you want to keep more tracks.

  3. Converted
    clip.mp4MP4 · 62 MB

    Step 3Save the new file

    Click Convert. The browser re-encodes via FFmpeg and gives you a clean file with the right extension. Re-run for a different format anytime.

03Use cases

When the format blocks the share.

Most conversions are about getting a video into the format some platform expects. These are the swaps that come up most often.

  • MOV from iPhone to MP4

    Phones export MOV; most apps and platforms prefer MP4. Drop in, pick MP4, get the universal format the rest of the internet expects.

    IMG_0044.mov → IMG_0044.mp4

  • MP4 to WebM for the web

    WebM is smaller at the same quality and natively supported in browsers. Convert before hosting and your page loads noticeably faster.

    hero.mp4 → hero.webm

  • MKV to MP4 for sharing

    MKV is great for storage but awkward to share — most messengers, email clients, and slide tools want MP4. Convert and send.

    movie.mkv → movie.mp4

  • Editor exports to delivery

    Editors often export MOV with ProRes-style codecs. Convert to MP4 for client review without burning bandwidth.

    edit.mov → review.mp4

  • WebM back to MP4

    Downloaded a WebM but need MP4 for an old player or a CMS that won't accept WebM? Convert in seconds.

    clip.webm → clip.mp4

  • Standardise a folder

    If your archive is a mix of formats, convert everything to MP4 so any device in the future can play any clip without thinking.

    Mixed folder → uniform MP4s

04Supported outputs

Pick the format you need.

Four containers cover every reasonable destination, from a marketing site to an editor's timeline.

05Quick tips

Convert with intent.

Habits that keep the output predictable and the workflow snappy.

  • 01

    MP4 is the safe default

    When in doubt, pick MP4. It's the format every platform, phone, and app handles without complaint.

  • 02

    WebM saves bytes on the web

    If your audience is in modern browsers, WebM is 20–30% smaller at the same quality. Great for hero videos and tutorials.

  • 03

    Convert, then compress

    The converter uses sensible defaults but doesn't aggressively compress. If the result is still too big, run it through the video compressor for another big drop.

  • 04

    MKV preserves more, takes more time

    MKV is best when you need to keep multiple audio tracks or subtitles. For everyday sharing, MP4 finishes faster and plays everywhere.

06Loved by

Creators, designers, and archivists use it weekly.

  • iPhone MOV files used to confuse the CMS we use. Drag them in here, pick MP4, upload. No platform errors, no missing previews.
    Jaden S.
    Creator
  • Switching hero videos from MP4 to WebM dropped page weight 25%. Lighthouse loved it. Conversion takes less time than the meeting it was for.
    Aiko K.
    Web designer
  • Inherited a folder of mixed formats. Standardised everything to MP4 over a weekend. No upload, no subscription, no fuss.
    Bo L.
    Archivist

07Questions

Video conversion, plainly answered.

Quick answers before you convert your first clip. Anything missing? hello@wirelogs.com.

01Which input formats are supported?

MP4, WebM, MOV, MKV, AVI, M4V — basically every common consumer and prosumer video format. Even unusual containers usually work because FFmpeg is doing the heavy lifting.

02Which output format should I pick?

MP4 if you want it to play anywhere. WebM if you're hosting on the modern web. MOV if you're staying inside Apple's ecosystem. MKV when you need to keep multiple audio/subtitle tracks.

03Will conversion change the resolution?

No. The video keeps its original width and height. If you need to resize, do that in an editor or with a dedicated resize tool first.

04Will quality drop?

There's some loss because the video is re-encoded — that's true of any conversion. The defaults are tuned so the difference is invisible for typical content. To keep the highest possible quality, pick the format with the most lenient compression for your use.

05How long does it take?

Roughly the same time as the video's runtime, sometimes faster on shorter clips. WebM is slower than MP4 because libvpx is heavier than libx264.

06What's the maximum file size?

500 MB per file. Most everyday videos are well under that. Larger or longer? Trim first with the video trimmer.

07Is the tool free?

Yes. No usage cap, no watermark on the output, no premium plan, no sign-up.

08Where does my video go?

Nowhere. FFmpeg runs in your browser via WebAssembly. Files never leave your machine, which keeps client work and personal footage private.

08Related tools

Keep working with the video.

Conversion pairs naturally with compress, trim, and the audio/GIF extractors — everything stays in the browser.

Ready when you are

Hit the right format in one click.

Drop any MP4, MOV, WebM, MKV, or AVI into the tool above and pick what you need on the other side. No upload, no sign-up, no watermark.

Convert a videoBrowse all tools
  • 4output formats
  • 500 MBmax file size
  • $0now and always