MP4 to FLAC
Convert MP4 to FLAC in your browser. Your file is never uploaded.
This free MP4 to FLAC converter runs in your browser. Drop in a MP4 file and download a FLAC a moment later, with no upload, no sign-up, and nothing to install. Because the work happens on your own device, your file never leaves it.
What is MP4?
MP4 is the universal video format. It plays on every device and platform, which makes it the safe default for sharing and uploading.
What is FLAC?
FLAC compresses audio losslessly, cutting file size by roughly half while keeping every detail of the original. It is the usual choice for archiving music.
Questions
Is the MP4 to FLAC converter free?
Yes, it is free with no sign-up and no watermark. There is no cap on how many files you can convert, and nothing to install.
Do my files get uploaded to a server?
No. The conversion runs entirely in your browser using code that loads onto your device, so the file is read, converted, and downloaded locally. It never reaches us or anyone else.
Will converting improve the quality?
No. FLAC is lossless, but it can only preserve what is already in the MP4; it cannot restore detail that lossy compression has already discarded. The file may also be larger.