Is converting MP3 to FLAC free?
Yes. This tool is completely free with no limits, watermarks or sign-up requirements.
Free MP3 audio converter
Convert MP3 to FLAC
Convert MP3 audio to FLAC for free, right in your browser. Upload a .mp3 file, pick FLAC from the output menu and the converted audio appears instantly in a player you can listen to before downloading. Everything is re-encoded locally — no uploads, no accounts, no watermarks.
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What is MP3 to FLAC conversion?
MP3 (MP3) and Free Lossless Audio Codec (FLAC) are two popular audio formats, but not every player or editor reads them all. This free converter decodes your .mp3 file and re-encodes it as a valid .flac file. The whole conversion runs in your browser, so your audio stays private.
How it works
- 1Upload a .mp3 audio file.
- 2Choose FLAC from the output format menu — the conversion starts automatically.
- 3Preview the converted audio in the browser player.
- 4Download the converted .flac file. No signup needed.
Why this tool
- 100% private. The conversion runs entirely in your browser. Your audio file is never uploaded to a server.
- Free, no signup. No accounts, no watermarks, no file size limits. Convert as many audio files as you like.
- 7 output formats. Pick AAC, AIFF, FLAC, M4A, MP3, WAV or WMA from the dropdown next to the preview.
Frequently asked questions
Are my audio files uploaded to a server?
No. The conversion happens entirely in your browser with FFmpeg WASM, so your MP3 file never leaves your device.
How do I convert MP3 to FLAC?
Upload a .mp3 file, choose FLAC from the output menu and the converted audio is previewed immediately. Click Download to save the .flac file.
What output formats can I choose?
AAC, AIFF, FLAC, M4A, MP3, WAV, WMA — the dropdown next to the preview switches between them.
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