MixMasterAIFLAC to MP3 Converter
FLAC files are lossless and big — usually 60-70% the size of a WAV. MP3 is lossy and small. If you have a FLAC library and you're moving tracks to a phone, a car stereo, or a USB stick that can't read FLAC, this is the conversion.
How it works
Drop the FLAC
FLAC at any bit depth or sample rate. The decoder handles 16, 24, and 32-bit; 44.1, 48, 88.2, 96, 176.4, and 192 kHz.
Up to 200 MB
Pick a bitrate
320 kbps preserves nearly all the fidelity audible from a lossless source. 256 kbps is the sweet spot for size vs quality. Below 192 you start losing high-frequency detail that was preserved in the FLAC.
Encoder: libmp3lame
Download
ffmpeg maps the FLAC's Vorbis comment metadata to ID3v2 tags on the MP3, so artist, title, album, and track number carry across.
Standard MP3 with ID3v2 tags
Frequently asked questions
Will I notice the quality drop from FLAC to 320 kbps MP3?
On most equipment, no. On studio monitors with good listening conditions, you might hear softer cymbal decay and slightly less air on top. For typical phone, car, and laptop listening it's transparent.
Are FLAC tags preserved when converting to MP3?
Yes. ffmpeg automatically copies FLAC's Vorbis comments to ID3v2 tags on the MP3 output — title, artist, album, year, track number, genre, comment all transfer. Album art carries over too if it was embedded.
What bitrate for portable players?
320 kbps for music collections, 256 kbps if storage is tight. Most modern phones and DAPs handle FLAC natively now, so check whether you actually need MP3 before converting an entire library.