Convert FLAC to MP3
Convert lossless FLAC audio to universal MP3. Reduce file size up to 85% with perceptibly identical quality. Free, in your browser.
.flac · up to 100 MB
Why convert FLAC to MP3
From audiophile archive to universal format
80-85% size reduction
From 30-50 MB FLAC to 5-8 MB MP3: libmp3lame at 192 kbps with quality virtually indistinguishable from the original.
Total privacy
Your audio never leaves your device. FFmpeg.wasm processes everything locally, no server uploads.
Compatible everywhere
MP3 works in any player, platform, streaming service, or device in the world.
Instant after first load
The FFmpeg engine downloads once and is cached. All subsequent conversions start immediately.
How it works
Three steps, no hassle
Select your FLAC file
Drag or select your .flac file — a CD rip, high-fidelity recording, or lossless music archive. No registration required.
MP3 compression with libmp3lame
FFmpeg.wasm uses libmp3lame to encode the FLAC audio to MP3 at 192 kbps. Everything happens on your device, no server uploads.
Download your MP3
The resulting MP3 is up to 85% smaller than the original FLAC with virtually indistinguishable quality. Ready to share or play on any device.
FAQ
Got questions?
FLAC (Free Lossless Audio Codec) is an open-source audio format developed by the Xiph.org organization, created by Josh Coalson in 2001. Unlike MP3, FLAC compresses audio without any loss of information: the decompressed file is bit-for-bit identical to the original. It is the preferred format for audiophiles, musicians, and for archiving high-quality music collections.
FLAC is lossless, while MP3 is lossy. The conversion does involve a reduction of data. However, at 192 kbps the difference is practically inaudible to most listeners under normal conditions. At 256 kbps or 320 kbps, the difference is practically imperceptible even for audiophiles with high-end equipment.
The reduction is significant: a FLAC file of 30-50 MB becomes an MP3 of approximately 5-8 MB at 192 kbps — an 80-85% reduction. FLAC compresses without loss but files are still large; MP3 applies the psychoacoustic model to eliminate auditorily irrelevant data, achieving much smaller files.
Keep original FLACs for music production, archiving collections (especially ripped CDs), and for audiophile listening with high-fidelity equipment. FLAC is the standard archival format precisely because it allows perfect recovery of the original audio. For everyday use — portable players, streaming, sharing music — MP3 is completely adequate.
When converting from FLAC: 192 kbps is good for general use and practically indistinguishable from the original for most listeners; 256 kbps is very good, recommended if you have storage space; 320 kbps is the maximum MP3 quality, recommended for audiophiles or professional distribution. This tool uses 192 kbps as the default, which is the industry standard.
FLAC uses Vorbis comments for its metadata (artist, title, album, year, cover art). During conversion to MP3, FFmpeg transfers these metadata to the ID3 format used by MP3. Most standard tags are preserved correctly, including album artwork. Very specific or custom tags may not transfer.
FLAC to MP3: FLAC history (Xiph.org, Josh Coalson 2001), lossless vs lossy compression, CD ripping workflows, and the audiophile community
FLAC (Free Lossless Audio Codec) was created by Josh Coalson and published by the Xiph.org organization in 2001 as a response to the need for an open-source, patent-free lossless audio format. Xiph.org, founded in 1994, is the same organization behind the Theora video codec, the Vorbis audio codec, and the Ogg container. FLAC uses a linear prediction algorithm to compress audio such that the decompressed file is bit-for-bit identical to the original, with typical compression ratios of 40-60% compared to the equivalent WAV. This makes it the format of choice for archiving music collections.
The audiophile community adopted FLAC as the de facto standard for CD ripping and high-quality music distribution. The typical workflow involves ripping CDs with programs like Exact Audio Copy (EAC) or dBpoweramp to FLAC to create a permanent, perfect archive, then converting to MP3 or AAC for everyday use in portable players or streaming. Platforms like Bandcamp offer FLAC downloads; Tidal and Qobuz stream FLAC to their premium subscribers. The technical difference between FLAC and high-quality lossy compression is the subject of perpetual debate on forums like Hydrogenaudio and Reddit's r/audiophile.
FLAC-to-MP3 conversion is the bridge between perfect archiving and universal compatibility. While FLAC is not compatible with many car players, older devices, or most mid-to-low-range portable players, MP3 works absolutely everywhere. The libmp3lame library, used by this tool, was originally developed by Mike Cheng as an open-source project in 1998 and has become the reference MP3 encoder: it is the same one used by FFmpeg, VLC, Audacity, and virtually all open-source audio programs in the world.