Convert HEVC to MP4 Online — No Upload, No Watermark
HEVC (H.265) MP4 files often fail to play on Windows 10 without a paid codec, on older Macs, or in Chrome — re-encoding to H.264 MP4 fixes that. Converting to MP4 gives you a file that plays on every phone, browser, and editor without re-encoding at playback time.
Drag & drop your video here, or click to browse
Max file size: ~2 GB (memory permitting)
Where HEVC files come from
HEVC, also called H.265, is what phones record when they are set to save space. Every recent iPhone and most Android flagships default to it, as do modern drones and action cameras, because it halves the file size of H.264 at the same quality.
What changes when you convert HEVC to MP4
| Video | HEVC re-encoded to H.264, which roughly doubles the bitrate for the same picture |
|---|---|
| Audio | Re-encoded to AAC |
| Compatibility | Plays without a codec purchase on Windows and in every browser |
Worth knowing first
The file will get bigger, and that is the point. H.264 needs roughly twice the data of HEVC for the same picture, which is the price of playing everywhere without a decoder. If size matters more than compatibility, keep the HEVC and use the Video Compressor instead.
FAQ
Why does the converted file get larger?
HEVC is about twice as efficient as H.264, so undoing it costs bitrate. Expect the result to be one and a half to two times the original for equivalent quality. You are trading size for the ability to play the file anywhere.
Why does Windows ask me to buy a codec for my phone videos?
Microsoft does not include an HEVC decoder in Windows by default because of the patent licensing, and sells an extension in the Store instead. Converting to H.264 sidesteps the purchase entirely, since H.264 support has always been built in.
Is HEVC the same as H.265 and HVC1?
Yes. HEVC and H.265 are two names for one standard, and hvc1 or hev1 are the tags identifying it inside an MP4. All of them convert here the same way.
Is this HEVC to MP4 converter really free and without upload?
Yes. The tool runs entirely in your browser using FFmpeg compiled to WebAssembly. Your HEVC file never leaves your device — open the DevTools Network tab to verify zero uploads. No signup and no watermark. The practical size limit is the memory your browser gives this tab, which is generous on a computer and a few hundred megabytes on a phone.