Free MP3 to FLAC Converter Online
Professional MP3 to FLAC converter that delivers superior audio quality. Convert your compressed MP3 files to lossless FLAC format for audiophile-grade listening. All processing happens in your browser for complete privacy.
Drag and drop MP3 files here, or click to select
or Select Files
Max file size: 100MB
Conversion Settings
How to Convert MP3 to FLAC
Upload MP3 Files
Drag and drop your MP3 files or click to browse. Our converter accepts all MP3 formats and bitrates.
Configure Quality
Choose your preferred compression level and quality settings for the FLAC output. Higher settings provide better compression.
Convert & Download
Click convert to transform your MP3 files to FLAC format. Download individual files or get all files in a ZIP archive.
Key Features
Lossless Audio Quality
Convert MP3 to FLAC with enhanced quality processing. FLAC format provides better compression efficiency than uncompressed formats.
Batch Processing
Convert multiple MP3 files to FLAC simultaneously with consistent quality settings for efficient workflow.
Audiophile Grade Output
Perfect for music archiving, high-end audio systems, and professional applications requiring lossless compression.
Customizable Compression
Choose from multiple compression levels to balance file size and processing speed according to your needs.
Privacy-First Processing
All conversion happens locally in your browser. Your MP3 files never leave your device.
Cross-Platform Compatible
Works on Windows, Mac, Linux, and mobile devices. No software installation required.
Frequently Asked Questions
Will converting MP3 to FLAC improve audio quality?
Converting MP3 to FLAC won't restore lost audio data, but FLAC provides a lossless container that's better for archiving and prevents further quality degradation.
What's the difference between MP3 and FLAC?
MP3 is a lossy compressed format that removes audio data, while FLAC is lossless and preserves all audio information with efficient compression.
How large are FLAC files compared to MP3?
FLAC files are typically 2-3 times larger than MP3 files but much smaller than uncompressed formats like WAV.
Can I convert multiple MP3 files at once?
Yes! Our batch conversion feature allows you to convert multiple MP3 files to FLAC simultaneously with the same quality settings.
What compression levels are supported?
We support FLAC compression levels from 0 (fastest) to 8 (best compression) to balance encoding speed and file size.
Is the conversion really free?
Yes, our MP3 to FLAC converter is completely free with no hidden costs, file limits, or watermarks.