Free online WebM→MP4 converter. Fast, private, no sign-up.
Need to turn a WebM file into a MP4 file? This converter does it in seconds and downloads the result automatically. Drop in your WebM file (a .webm) and download a ready-to-use MP4 file (a .mp4) — no software to install, no account to create, and no watermark on the output.
WebM is an open, royalty-free video format built for the web, usually VP9 or AV1 — smaller than MP4 at similar quality and well supported in browsers.
MP4 (H.264) is the most compatible video format in the world — it plays on virtually every device, browser and social platform.
You'll reach for a WebM to MP4 conversion whenever the other end expects MP4 specifically — uploading somewhere, importing into software, or sharing with someone whose device prefers it. The conversion runs through ffmpeg, the industry-standard media engine, re-encoding the streams with sensible high-quality defaults so the result plays cleanly on your target device.
It comes up when publishing online, submitting to a service with strict format rules, or archiving a collection in a single consistent format.
Privacy is the default here. Your WebM file is uploaded over an encrypted connection, converted, downloaded the moment it's ready, and then deleted automatically a short time afterwards. We never keep your files, never build a library of your content, and never make you sign up to download the result.
Ready? Use the converter above, or explore related conversions: turn WebM into a different format, or convert another format into MP4. Everything on Convert Me Pls is free, unlimited and watermark-free.
Yes. Convert Me Pls is completely free with no sign-up, no file-count limits and no watermarks added to your output.
Your files are uploaded over an encrypted connection, converted, and then deleted automatically a short time afterwards. We never keep your files and never build a library of your content.
We use the best available encoders (libvips, ImageMagick and ffmpeg) at high-quality settings for the cleanest possible result.
Conversions run on our servers and support large files comfortably; very large media is processed in a streaming pipeline.