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Convert to and from WebM

Easily convert video files to or from WebM directly in your browser — no uploads, complete privacy, and your files never leave your device.

Conversion Engine Ready to Start

Initialize the conversion engine to start converting your files. This process loads the necessary library for file conversion.

Convert to WebM

MP4 to WebMConvert →AVI to WebMConvert →MOV to WebMConvert →MKV to WebMConvert →M4V to WebMConvert →FLV to WebMConvert →GIF to WebMConvert →

Convert from WebM

WebM to MP4Convert →WebM to AVIConvert →WebM to MOVConvert →WebM to MKVConvert →WebM to M4VConvert →WebM to FLVConvert →WebM to GIFConvert →WebM to MP3Convert →WebM to WAV/WAVEConvert →WebM to OGGConvert →WebM to AACConvert →WebM to FLACConvert →WebM to M4AConvert →WebM to AIFF/AIFConvert →WebM to OpusConvert →

WebM Format Properties

Media Type:Video
Audio Support:✓ Supported
Max Resolution:
MIME Type:video/webm
Browser Support:Modern

Supported Formats

Convert between all major formats with our privacy-first converter

Video Formats

Convert between all major video formats including MP4, WebM, AVI, MOV, and more

MP4
WebM
AVI
MOV
MKV
M4V
FLV
View detailed format comparison

In Development

  • Document conversions (PDF, DOCX, etc.)
  • Archive conversions (ZIP, RAR, etc.)
  • Additional image formats (TIFF, PSD, AI, RAW)
Request a format

All Supported Video Conversions

Browse all video format conversion combinations available on OfflineConvert.

Video Conversions

Convert between all major video formats including MP4, WebM, AVI, MOV, and more

MP4 to WebMMP4 to AVIMP4 to MOVMP4 to MKVMP4 to M4VMP4 to FLVMP4 to GIFMP4 to MP3MP4 to WAV/WAVEMP4 to OGGMP4 to AACMP4 to FLACMP4 to M4AMP4 to AIFF/AIFMP4 to Opus
WebM to MP4WebM to AVIWebM to MOVWebM to MKVWebM to M4VWebM to FLVWebM to GIFWebM to MP3WebM to WAV/WAVEWebM to OGGWebM to AACWebM to FLACWebM to M4AWebM to AIFF/AIFWebM to Opus
AVI to MP4AVI to WebMAVI to MOVAVI to MKVAVI to M4VAVI to FLVAVI to GIFAVI to MP3AVI to WAV/WAVEAVI to OGGAVI to AACAVI to FLACAVI to M4AAVI to AIFF/AIFAVI to Opus
MOV to MP4MOV to WebMMOV to AVIMOV to MKVMOV to M4VMOV to FLVMOV to GIFMOV to MP3MOV to WAV/WAVEMOV to OGGMOV to AACMOV to FLACMOV to M4AMOV to AIFF/AIFMOV to Opus
MKV to MP4MKV to WebMMKV to AVIMKV to MOVMKV to M4VMKV to FLVMKV to GIFMKV to MP3MKV to WAV/WAVEMKV to OGGMKV to AACMKV to FLACMKV to M4AMKV to AIFF/AIFMKV to Opus
M4V to MP4M4V to WebMM4V to AVIM4V to MOVM4V to MKVM4V to FLVM4V to GIFM4V to MP3M4V to WAV/WAVEM4V to OGGM4V to AACM4V to FLACM4V to M4AM4V to AIFF/AIFM4V to Opus
FLV to MP4FLV to WebMFLV to AVIFLV to MOVFLV to MKVFLV to M4VFLV to GIFFLV to MP3FLV to WAV/WAVEFLV to OGGFLV to AACFLV to FLACFLV to M4AFLV to AIFF/AIFFLV to Opus

All conversions are processed entirely in your browser for complete privacy.

Frequently Asked Questions

WebM Modern open-source format optimized for web streaming with superior compression.

To convert WebM files, upload your WebM file using our converter above, select your desired output format, and click convert. The conversion happens entirely in your browser for complete privacy.

Open-source format with excellent compression. Ideal for web streaming.

WebM files can be converted to: video/mp4, video/webm, video/avi, video/quicktime, video/x-matroska, video/x-m4v, video/x-flv, image/gif, audio/mpeg, audio/wav, audio/ogg, audio/aac, audio/flac, audio/mp4, audio/x-aiff, audio/opus, audio/webm. Our converter supports all these output formats with customizable quality settings.

WebM has modern browser support. It works in most modern browsers but may have limited support in older browsers.

Yes, WebM supports audio tracks along with video, making it suitable for complete multimedia content.

WebM supports resolutions up to undefined, making it suitable for high-quality video content.

WebM offers superior compression (~20% smaller than mp4). This makes it suitable for your use case.