WebM to MP4 Converter
WebM is the format browsers record in — and the format almost nothing else wants. Fixpio’s webm to mp4 converter turns a WebM clip into an MP4 that plays and imports where WebM cannot: on iPhones and iPads, in QuickTime and Windows players, in editors like Premiere, and in PowerPoint. It works by playing your clip and re-recording it as MP4 inside your browser, so nothing is uploaded and short clips suit it best.
Convert WebM to MP4
Add a WebM video below and download it back as an MP4.
1Add your WebM video
Drop your WebM file here
or choose a file stored on this device
Works with WebM video files (.webm) — the kind saved by screen recorders, browser recordings and downloads from sites like Discord and Reddit.
Good to know: MP4 recording is not available in every browser. This page checks your browser first. If MP4 recording is not available here, try Safari, which can record MP4.
Keep this tab open while your clip plays — the MP4 is recorded in real time as it plays.
Processed on your device — no upload takes place.
Why people convert WebM files to MP4
WebM belongs to the browser. MP4 belongs almost everywhere else.
Watch it on your phone
A WebM clip saved on a computer often will not open on an iPhone or iPad at all. As an MP4, the same clip plays in the Photos app and can be sent on to friends and family without a special player.
Edit your screen recordings
Screen recorders and browser capture tools save in WebM, but editors such as Premiere, iMovie and most presentation tools will not import it. Converting first turns a stuck recording into footage you can actually cut, caption and publish.
Share without the rejection message
WhatsApp, social apps, slide decks and TVs routinely refuse WebM files or show a black screen. An MP4 with standard encoding is the format they are built to accept, so the clip just plays.
About this converter
People usually need to convert webm to mp4 at the moment a clip leaves the browser: a screen recording that an editor will not import, a funny moment saved from Discord that will not play on a phone, a web capture that has to go into a presentation. This page is built for exactly that moment. It is a webm to mp4 converter that runs online in your browser — your file is played and re-recorded as MP4 on your own device, so there is no upload, no queue and no program to install before you can start.
Because the work happens locally, the tool suits short clips you would rather not hand to a third-party server: a work recording, a tutorial capture, a family video. The result is a standard MP4 that opens on iPhones and Android phones, in Windows and QuickTime players, in video editors and in PowerPoint — the places WebM cannot reach. Reach for this free webm to mp4 converter whenever a .webm file is the only thing standing between you and pressing play.
Frequently asked questions
Straight answers about compatibility, timing and privacy.
How do I convert a WebM file to MP4 on this page — and how long does it take?+
Add your WebM file using the upload box — drag it in or browse for it — then press Convert to MP4. Your browser plays the clip and records it as MP4 in real time, so conversion takes roughly as long as the video lasts: a 30-second clip takes about 30 seconds. Keep the tab open while it plays, then download the finished MP4. Short clips suit this method best; a very long recording would have to play through in full, which is rarely practical.
Why won’t my WebM file play on my iPhone, and will MP4 fix it?+
A downloaded WebM file will not open in the iPhone’s or iPad’s built-in player or Photos app, and QuickTime on a Mac turns it away too — those apps simply do not support the WebM format for local files. MP4 is the format Apple devices play natively, so converting your clip to MP4 on this page gives you a file that opens, plays and shares on iPhone and iPad without a special player app.
Why won’t my WebM import into Premiere, iMovie or PowerPoint?+
Most video editors and presentation tools were built around MP4 and do not include support for WebM: editors may refuse the file or show an error, and PowerPoint can import the audio only or display a black frame. Converting the clip to MP4 first is the straightforward fix — MP4 imports cleanly into Premiere, iMovie, other common editors, PowerPoint and Keynote, with no extra codecs or plugins to install.
Are my videos uploaded to a server?+
No. Fixpio’s converter runs entirely in your web browser, on your own device. Your file is not sent anywhere, not stored by us and not seen by anyone else — the video is played and re-recorded locally, and when you close the tab, nothing of your clip remains with us, because it never left your machine in the first place. That makes it a sensible choice for screen recordings and other clips you would rather keep private.
Is this WebM to MP4 converter free — and what if my browser cannot record MP4?+
Yes. Converting a clip costs nothing, and there is no account, sign-up or software installation involved. One honest condition: the converter relies on your browser being able to record MP4, and not every browser can. The page checks your browser before you start and will tell you plainly if MP4 recording is unavailable — it will never hand you a WebM file renamed as MP4. If that happens, try Safari, which can record MP4, or a browser on a platform where MP4 recording is supported.
Will the MP4 look as good as the original WebM?+
The MP4 is a fresh recording of your WebM as it plays, so its quality depends on the source: a clear, high-quality WebM produces a clear MP4, and converting cannot add detail the original never had. For the short screen recordings and web clips this tool is built for, the result holds up well for watching, sharing and editing. If quality matters most, start from the highest-quality WebM you have and keep a copy of the original.