FLAC to HCOM Converter
Create Macintosh HCOM audio from lossless FLAC
Lossless Input
FLAC gives HCOM encoding pristine source audio — the best vintage Mac audio quality.
Classic Mac Format
HCOM is Huffman-compressed Mac audio — produce from lossless FLAC sources.
No Vintage Tools
Convert FLAC to HCOM without a Mac emulator — runs entirely online.
How to convert FLAC to HCOM
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose hcom or any other format you need as a result (more than 200 formats supported)
Let the file convert and you can download your hcom file right afterwards
About formats
Frequently Asked Questions
HCOM uses Huffman compression designed for classic Macintosh hardware. Starting from lossless FLAC means no artifacts contaminate the audio before HCOM encoding.
SoX reads HCOM directly, while Mac emulators like Basilisk II and SheepShaver play HCOM through their native audio stacks. Some retro audio archival tools also support it.
Absolutely — FLAC decodes without any loss, so the Huffman encoder in HCOM receives a pristine signal. Lossy sources would bake in compression artifacts permanently.
HCOM is almost exclusively used for vintage Macintosh preservation and classic Mac software archives. It has no role in contemporary audio production or distribution.
Yes — upload your entire collection of FLAC recordings and convertio.tools encodes each one to HCOM in parallel, streamlining retro archive workflows.