Convert WebM to MP4
Free & Secure
Transform WebM videos into universally compatible MP4 files. Works on iPhone, Android, Smart TV, and every major platform — no registration, no watermarks, no quality loss.
Upload WebM File
Select a single file
Max size: 500MB
How to Convert WebM to MP4
Three simple steps — no account, no software, no hassle.
Upload WebM
Select your .webm file. We support WebM files up to 500MB.
Convert
Click Convert — our servers transcode instantly to H.264 MP4.
Download
Download your universally compatible MP4 file immediately.
Why Use Our WebM to MP4 Converter?
Universal Compatibility
MP4 (H.264) plays on every device — iPhone, Android, Windows, macOS, Smart TV, and every major browser without plugins.
High Output Quality
We use high-bitrate H.264 encoding to preserve your original video quality throughout the conversion process.
Secure & Private
TLS 1.3 encryption in transit. Files are processed on isolated cloud servers and automatically deleted within 1 hour — no exceptions.
No Registration
No account, no email, no sign-up required. Just upload your WebM file and download the MP4 — completely anonymous.
Works on All Devices
Use on any phone, tablet, or desktop browser. No software to install — works 100% in your browser.
Powered by FFmpeg
FFmpeg is the open-source engine trusted by VLC, YouTube, and thousands of professional applications — now embedded directly in our conversion pipeline.
When do you need to convert WebM to MP4?
WebM works well in Chrome and Firefox, but falls short when you need to share across platforms, devices, and apps.
Play on iPhone or Apple TV
iOS and macOS do not natively support WebM. Convert to MP4 to play directly in the built-in Photos or Videos app.
Share on Social Media
YouTube, TikTok, Instagram, and Twitter all prefer or require MP4. Convert WebM for seamless uploads.
Open on Smart TVs
Most Smart TVs and media players do not support WebM. MP4 works out of the box on any HDMI-connected device.
Embed in Presentations
PowerPoint and Keynote support MP4 natively. Convert WebM to embed videos directly in slides without browser dependency.
WebM vs MP4 — What's the Difference?
WebM is an open video format developed by Google, primarily designed for efficient streaming inside web browsers like Chrome and Firefox. It uses VP8 or VP9 video codecs and Vorbis or Opus audio codecs. While excellent for web streaming, WebM file support is limited outside of browsers — most iOS devices, Smart TVs, and media players don't support it natively.
MP4 (MPEG-4 Part 14) is the industry-standard container format using H.264 video and AAC audio codecs. It is supported by virtually every device, platform, and application in existence — from iPhones and Android phones to Smart TVs, NLEs (video editors), social media platforms, and desktop media players. Converting WebM to MP4 removes all compatibility barriers.
When to use WebM vs MP4
- Use WebM when embedding video directly on a web page for Chrome/Firefox users — it offers smaller file sizes at equivalent quality via VP9.
- Use MP4 for everything else: sharing, social media, editing, archiving, or playing on any non-browser device.
- Screen recordings from Chrome, OBS Studio, and similar tools often default to WebM — convert to MP4 before sharing or editing.
- Downloaded videos from web apps may arrive as WebM — convert to access them on iPhone, iPad, or offline players.
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Convert Your WebM File Now — Free
No registration. No watermarks. Works on any device. Your MP4 is ready in seconds.