What happens when you convert MP3 to FLAC
| Compression | Lossy → Lossless |
|---|---|
| Size per minute | MP3 ≈ 1.4 MB → FLAC ≈ 6.4 MB |
| Quality | No further loss, but the FLAC cannot restore what MP3 compression removed |
| Tags | Title, artist and album tags are copied when the target format supports them |
| Opens in | Android, Windows 10/11, macOS and audiophile players; older stereos do not |
Sizes are typical values; your files will vary with content and settings.
MP3 MPEG-1 Audio Layer III
MP3 is the most compatible audio format in existence. Every phone, car stereo, browser and editor plays it, and 128 to 320 kbps gives small files that sound good for music and speech.
MP3 converterFLAC Free Lossless Audio Codec
FLAC compresses audio losslessly to around 50 to 60 percent of WAV size. Decoding gives back the exact original samples, so it is the format of choice for archiving music.
FLAC converterHow to use the MP3 to FLAC Converter
- 1
Choose a MP3 file or drop it onto the page.
- 2
Review the audio options. The defaults suit most files.
- 3
Click Convert and download your FLAC when processing finishes.
Why convert MP3 to FLAC?
MP3 is the format of most music downloads, podcasts and audio libraries. It is lossy, so re-encoding repeatedly reduces quality. Choose FLAC to keep the audio lossless at roughly half the size of WAV.
Frequently asked questions
Will the FLAC lose quality?
FLAC is lossless, so the conversion keeps every pixel or sample that is in your MP3 file. It cannot bring back detail that MP3 compression already removed, and the FLAC file will usually be larger.
Will the FLAC be smaller than the MP3?
No, usually larger: a minute of audio takes about 1.4 MB as MP3 and about 6.4 MB as FLAC. FLAC is lossless, so its size depends on the audio rather than a bitrate setting.
Questions about privacy, file-size limits or conversion speed are answered in the general FAQ.