FLAC to MP3
Compress FLAC audio as MP3 – free in browser
Why FLAC → MP3?
FLAC offers lossless quality but creates very large files. MP3 drastically compresses the file with acceptable quality – ideal for mobile use. Directly in the browser, no upload.
Frequently Asked Questions
What is FLAC?
FLAC (Free Lossless Audio Codec) is a lossless audio format. It offers perfect sound quality, but the files are significantly larger than MP3.
Are my files safe?
Yes, 100%. Your audio files are never uploaded to a server. The conversion happens entirely locally in your browser.
Is the conversion free?
Yes, wandlio.de is completely free. No registration, no limits, no ads.
About MP3
MP3 (MPEG-1 Audio Layer III) was finalized in 1993 as ISO 11172-3 and revolutionized the music industry as the first format to achieve near-CD quality at compression ratios of approximately 10:1. The algorithm uses psychoacoustic models that remove frequencies inaudible to the human ear and typically achieves bitrates of 128 to 320 kbps. Development began in 1987 at the Fraunhofer Institute under Karlheinz Brandenburg, who is considered the father of MP3. The format enabled the rise of Napster, the iPod, and the entire digital music distribution ecosystem. MP3 supports ID3 tags for metadata such as artist, album, and cover art, variable bitrates, and streaming. The essential patents expired in 2017, making MP3 royalty-free. While AAC and Opus deliver better quality at the same bitrate, MP3 remains the format with the highest compatibility - every playback device, browser, and software from the last 25 years supports it.
About FLAC
FLAC (Free Lossless Audio Codec) was developed by Josh Coalson in 2001 and is the most widely used format for lossless audio compression. FLAC files are about 50 to 60 percent smaller than uncompressed WAV files while preserving the original quality bit-for-bit. The format is patent-free, maintained by the Xiph.Org Foundation, and was published as RFC 7900 in 2014. FLAC supports sample rates up to 655 kHz, bit depths up to 32 bits, and up to 8 channels, embedded cuesheets for continuous album playback, ReplayGain volume adjustment, and Vorbis comments for metadata. The codec is supported by virtually all modern playback devices and software players, including Spotify, Apple Music, Tidal, and Amazon Music, which all offer FLAC for HiFi streaming. FLAC is the standard among audiophiles and music archives where no quality loss is acceptable. For everyday mobile use, converting to AAC or Opus is recommended since FLAC files at typical album sizes consume considerable storage.
Why convert FLAC → MP3?
FLAC (Free Lossless Audio Codec) compresses audio losslessly to typically 50-60% of WAV size with bit-perfect quality. It's ideal for archiving and HiFi playback, but files are still often too large for mobile use and streaming — a typical FLAC album is 300-500 MB. Converting to MP3 creates a space-saving version (MP3, OGG) for mobile players, streaming, or email delivery, while keeping FLAC as the quality archive. MP3 makes FLAC files practical for everyday use. MP3 is the most universal audio format — playable on every device and player, ideal for mobile use and sharing.