Convert MP3 to FLAC
Free online MP3 to FLAC converter.
Choose .mp3 files
or drag and drop — multiple files supported
Max 200 MB for video · 100 MB for other files
Why convert MP3 to FLAC?
Converting MP3 to FLAC allows you to use your files in applications and platforms that require the FLAC format. The conversion is fast, free, and preserves the quality of your original file.
Common use cases
- Using MP3 files in applications that require FLAC
- Sharing files with people who need FLAC format
- Preparing files for platforms that accept FLAC
How to convert MP3 to FLAC
- Click "Choose a .mp3 file" or drag and drop your MP3 file into the upload area.
- Select your preferred quality level — high quality keeps the best fidelity, smaller file prioritizes file size.
- Your file uploads directly to our secure servers and conversion starts automatically.
- Once finished, click "Download" to save your converted FLAC file.
Tips for MP3 to FLAC conversion
- High quality preserves the most detail from your original MP3 file.
- The converted FLAC file can be used on any device or platform that supports the format.
- Files are automatically deleted from our servers within 24 hours for your privacy.
About MP3 and FLAC formats
.MP3 format
MP3 is the most popular audio format worldwide. It uses lossy compression to dramatically reduce file size while maintaining acceptable audio quality. Universal compatibility.
.FLAC format
FLAC (Free Lossless Audio Codec) compresses audio without any quality loss. Files are 50–70% the size of WAV while being bit-for-bit identical to the original.
Frequently asked questions
Is MP3 to FLAC conversion free?
Yes, ConvertThis offers free MP3 to FLAC conversion with no signup required. There are no watermarks, no daily limits, and no hidden fees.
How long does MP3 to FLAC conversion take?
Most conversions complete in 2-15 seconds depending on file size. Larger files (over 50 MB) may take up to a minute.
Is my file safe during conversion?
Yes. Files are encrypted during upload using 256-bit SSL, processed on isolated servers, and automatically deleted within 24 hours. We never access, share, or store your files.
Convert MP3 to other formats
Convert other formats to FLAC
Privacy and security
Your files are encrypted during upload using 256-bit SSL and are automatically deleted from our servers within 24 hours. We never share, sell, or access your files. All conversions happen on isolated, ephemeral servers.