What is FLAC (Free Lossless Audio Codec)?
FLAC compresses audio without any loss, typically to about half the size of a WAV file.
FLAC is the format of choice for anyone who wants to keep a perfect copy and still save space. Converting FLAC to MP3 or AAC makes the files small enough for phones while the FLAC stays your master.
File extensions: .flacMIME types: audio/flac
Advantages
- Bit-perfect copy of the original
- Roughly 40 to 60 percent smaller than WAV
- Open, royalty free and well tagged
Disadvantages
- Much larger than MP3 or AAC
- Older Apple devices need extra apps
- Overkill for speech and podcasts
Typical uses
- Archiving CDs and vinyl rips
- Hi-res music libraries
- Master copies before lossy encoding
Compatibility
Plays in all current browsers, Android, Windows and macOS; iPhones support it in the Files app and Apple Music since iOS 11.
Convert FLAC to another format
Convert to FLAC from another format
Frequently asked questions
Are my files uploaded to a server?
No. The conversion runs entirely in your browser with local code. Your files never leave your device, and there is no upload.
Is there a file size limit?
There is no limit on our side, but your browser memory is. Images work for very large files; for videos, files above a few hundred megabytes can fail on devices with little memory.
Will the quality suffer?
That depends on the target format and settings. Use the quality option to balance size and detail; lossless targets keep everything the source contained.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox and Safari. Fast hardware paths are used where available, with a compatible fallback otherwise.