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Convert MP4 to WEBM

Counter MP4 → WEBM
Drop your files here .mp4 .m4v

    Turn MP4 files into WEBM in seconds. WebM is an open, royalty-free video format optimised for the web.

    • Free
    • No sign-up
    • Batch conversion

    Why convert MP4 to WEBM?

    To convert MP4 files to WEBM, drop them on the counter above.

    Most files convert in seconds: no queue, no email address, and the WEBM result saves straight to your computer or phone.

    How to convert MP4 to WEBM

    1. Add your MP4 files

      Drag your MP4 files onto the counter or pick them with Choose files. You can add several at once.

    2. Check the settings

      The defaults suit most cases. Change quality, size or other options if you like; after a change, one click converts again.

    3. Conversion starts by itself

      Each file is converted to WEBM and its row is stamped CONVERTED.

    4. Download your WEBM file

      Get the file with Download. With several files you can download them all as one ZIP.

    MP4 vs WEBM

    PropertyMP4WEBM
    Full nameMPEG-4 Part 14WebM
    TypeVideoVideo
    CompressionLossyLossy
    Created byMPEG (ISO/IEC 14496-14)Google
    Year20012010
    Extensions.mp4 .m4v.webm
    MIMEvideo/mp4video/webm

    About the formats

    MP4

    MPEG-4 Part 14

    MP4 is the most common video format in the world. It usually carries H.264 video and AAC audio and plays smoothly on phones, browsers, TVs and social networks.

    All MP4 conversions

    WEBM

    WebM

    WebM is the open video format Google built for the web. It carries VP9 or AV1 video with Opus audio, and screen recordings and videos recorded in the browser are often WebM.

    All WEBM conversions

    Frequently asked questions

    Is converting MP4 to WEBM free?

    Yes, completely free. No account, no daily limit, no watermark and no queue.

    Does it work on a phone?

    Yes. It works on iPhone, iPad and Android, with no app to install.

    Is there a file size limit?

    There is no size limit set by us. Files of hundreds of MB convert too; very large files take longer and are handled more comfortably on a computer than on a phone.

    Other conversions
    Family Give → Get What you gain
    WEBM MP4 plays everywhere
    MP4 GIF silent loop
    MP4 MP3 sound only, plays on every device
    MP4 MOV Apple and video editors
    MP4 WAV sound only, lossless, ready to edit
    MP4 M4A sound only, better than MP3 at the same size
    MP4 MKV multiple audio and subtitles
    MP4 AVI works with old players
    GIF WEBM much smaller animation
    MOV WEBM light video for the web · iPhone video
    MKV WEBM light video for the web · OBS and film recordings
    AVI WEBM light video for the web · old camcorder footage
    WMV WEBM light video for the web · Movie Maker video
    FLV WEBM light video for the web · Flash-era video