FLAC は音質を一切落とさない可逆圧縮形式です。CD 品質を保ったまま約半分の容量にでき、タグや cue にも対応します。
Typical use: 保存用は FLAC、持ち出しや再生機器向けには MP3 に変換します。
About the FLAC format
FLAC は音質を一切落とさない可逆圧縮形式です。CD とまったく同じ音を保ちながら、容量はおよそ半分になります。タグや cue シートにも対応します。
保存用は FLAC、持ち出し用は MP3/AAC という二段構えがよく採られます。可逆なので将来どの形式にも劣化なしで作り直せるのが利点です。
Strengths
- ✓ 劣化なしで容量削減
- ✓ タグ/ cue に対応
- ✓ 将来も形式変換が自由
Limitations
- ✗ MP3 よりは大きい
- ✗ 古い携帯プレイヤーは非対応の場合
- ✗ Overkill for casual listening
- Compression
- Lossless (~50–60% of PCM)
- Quality
- Bit-perfect
- Compatibility
- Players, Android, hi-res rigs
- Best for
- Music collections and archival
Convert FLAC to…
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Frequently asked questions
What is a FLAC file?
FLAC is the audiophile’s lossless codec: bit-perfect audio compressed to roughly half its raw size.
How do I convert FLAC files online?
Pick a target format from the "Convert FLAC to…" list below, drop your file and hit convert. Everything runs in your browser — no install, no upload, no watermark, no limits.
Is it safe to convert FLAC files here?
Yes. Every conversion is performed by your own device inside the browser — files never leave for a server, and the page keeps working even offline.
Which formats can FLAC convert to?
This page lists all 47 directions across documents, images, audio, video, spreadsheets and archives — each one is its own free converter page.