UNIVERSAL MEDIA CONVERTER

MP4 to WebM Converter

Convert MP4 into WebM for browser-focused playback and efficient modern web delivery.

MP4MOVMKVWebMMP3WAVFLAC+ more

✓ No signup✓ Batch up to 3✓ Auto cleanup

Converter readyUp to 400 MB per request • 250 MB per file

250 MB per file400 MB per request45 min max video~30 min auto-delete

Drop MP4 files here or click to browse from your device No files selected MP4, MOV, MKV, AVI, WebM, MP3, WAV, FLAC, M4A, AAC, OGG, OPUS + more

Popular:

Convert to Recommended MP4 is recommended for broad video compatibility.

Output quality

Highlarger file Balancedrecommended Smallermore compression

Smart output: MP4Best overall compatibility for video playback and sharing.

Size depends on source

Advanced settingsFine-tune the output

Maximum resolutionNever intentionally upscales; server limit: 1080p. Audio bitrateUsed by compressed audio outputs and video audio tracks. Sample rate48 kHz is common for video production. Output filename

.mp4

Available for single-file conversion. Trim startOptional HH:MM:SS or seconds. Trim endLeave blank to convert to the end. Remove audioCreate silent video output.

✓ Format-aware settings✓ Live queue progress✓ Files expire after ~30 min

RELATED CONVERTERS

More Useful Conversion Paths

Explore closely related formats without digging through a giant list of every theoretical combination.

AVI → WEBMConvert legacy AVI footage into WebM for modern browser-based playback. FLV → WEBMConvert FLV video to WebM for playback, editing, sharing or compatibility with another media workflow. M4V → WEBMConvert M4V video to WebM for playback, editing, sharing or compatibility with another media workflow. MKV → WEBMConvert MKV media into WebM for browser-friendly playback and modern web workflows. MOV → WEBMConvert MOV footage into WebM for browser-oriented publishing and web delivery. MP4 → 3GPConvert MP4 video to 3GP for playback, sharing, editing or compatibility with software and devices. MP4 → AVIConvert MP4 into AVI for older software, devices or legacy workflows. MP4 → FLVConvert MP4 video to FLV for playback, sharing, editing or compatibility with software and devices.

FORMAT SUPPORT

Video, Audio and Video-to-Audio Conversion

The same FFmpeg-powered engine handles common media workflows without forcing every user through technical codec menus.

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Video Converter

Convert MP4, MOV, MKV, AVI, WebM and other common video files to MP4, MOV, MKV, WebM, AVI or GIF.

MP4MOVMKVWEBMAVIGIF

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Audio Converter

Change MP3, WAV, FLAC, AAC, M4A, OGG, OPUS and other audio files into the format your player or workflow requires.

MP3WAVFLACAACM4AOGGOPUS

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Extract Audio

Upload a video and create MP3, WAV, FLAC, AAC, M4A, OGG or OPUS audio without keeping the video stream.

MP4 → MP3MOV → WAVMKV → FLAC

MP4 TO WEBM GUIDE

Why Convert MP4 to WEBM?

Convert MP4 into WebM for browser-focused playback and efficient modern web delivery.

Recommended starting pointWebM can take longer to encode because it uses a different video codec.

INPUT

MP4

A widely supported multimedia container used for web video, phones, TVs, presentations and general sharing.

Broad playback compatibility and everyday video delivery.

OUTPUT

WEBM

An open media container designed for efficient browser and web delivery, commonly paired with VP9 or AV1 video.

Modern web playback and browser-focused delivery.

How to convert MP4 to WEBM

Upload your MP4 file above.
Keep WEBM selected as the output.
Choose Balanced quality unless your workflow needs another setting.
Open Advanced settings only if you need trimming, resolution, bitrate, sample rate or a custom filename.
Start the conversion and download the finished file when it is ready.

Before you convert

Re-encoding can change quality and file size even when the extension stays familiar. Compatibility outside browsers can vary more than with MP4.

Changing a container or codec cannot recreate quality already missing from the source, so keep an important original when possible.

Explore MP4 conversions Explore WEBM conversions