How to Convert MP3 to FLAC Online
Convert MP3 to lossless FLAC. Free, fast, and no account required.
Drop your MP3 file here
or click to browse from your device
Supports MP3 · Max 250 MB
🔒 Converted entirely in your browser — your file never leaves your device.
Converting MP3 to FLAC changes your file from MP3 (MPEG Audio Layer III) to FLAC (Free Lossless Audio Codec). MP3 files are commonly used for Music playback and distribution and Podcasts and audiobooks, while FLAC is a better fit when you need Lossless compression preserves full quality and Significant size reduction vs. WAV. Convert to FLAC when an application or platform requires it, or when its strengths suit your project better than MP3. Upload your MP3 file above to convert it in seconds — no software to install and no account required.
What Is MP3?
MP3 is the most commonly used audio format for music and spoken-word content. It uses lossy compression to reduce file size significantly while maintaining acceptable audio quality. MP3 is supported by virtually every device and software application.
- Music playback and distribution
- Podcasts and audiobooks
- Web audio
- Portable music players
MP3 uses lossy compression, meaning some audio data is discarded to reduce file size. For archival or professional use, lossless formats like FLAC or WAV may be preferred.
What Is FLAC?
FLAC is a lossless audio format that compresses audio without losing any data. It typically reduces file size by 50-70% compared to WAV while preserving identical audio quality. FLAC is widely used by audiophiles and for music archival.
- Lossless music storage
- Audio archival
- High-fidelity audio playback
- Music library management
While FLAC preserves perfect audio quality, the files are still several times larger than MP3. Not all portable devices support FLAC natively.
Why Convert MP3 to FLAC?
- 1Convert to a lossless format that preserves data without additional compression
- 2Put FLAC (Free Lossless Audio Codec) to work for Lossless music storage and Audio archival
- 3Convert MP3 to FLAC right in your browser — nothing to install and no account to create
How to Convert MP3 to FLAC
- 1
Upload your MP3 file
Drag and drop your MP3 file into the upload area above, or click to open your file browser.
- 2
Start the conversion
Click the "Convert to FLAC" button. The conversion begins immediately and you can track progress.
- 3
Download the result
Once complete, click the download button to save your FLAC file to your device.
Privacy & Security
This conversion is processed entirely in your browser using WebAssembly. Your file is never uploaded to our servers — full privacy guaranteed.
Frequently Asked Questions
To convert a MP3 file to FLAC, use the upload area on this page. Drag and drop your MP3 file or click to browse your files. Once uploaded, click the "Convert to FLAC" button. The conversion will be processed and the resulting FLAC file will be available for download.
Yes. This conversion tool is completely free to use. There are no premium tiers, no watermarks applied to your output, and no limit on the number of conversions you can perform. The service is supported by advertising.
MP3 (MPEG Audio Layer III) MP3 is the most commonly used audio format for music and spoken-word content. FLAC (Free Lossless Audio Codec) FLAC is a lossless audio format that compresses audio without losing any data. Converting between these formats allows you to take advantage of the strengths of each format depending on your specific needs.
Converting MP3 to FLAC makes sense when you need what FLAC (Free Lossless Audio Codec) is good at: Lossless compression preserves full quality, Significant size reduction vs. WAV, Open-source and royalty-free. It is commonly used for Lossless music storage, Audio archival, High-fidelity audio playback. While FLAC preserves perfect audio quality, the files are still several times larger than MP3. Not all portable devices support FLAC natively.
The output quality depends on the codecs and settings involved. When converting between lossy formats, some quality adjustment is expected. Video and audio conversions in FlipMyFiles are processed in your browser using standard encoding settings designed to maintain good quality.
Yes. Video and audio conversions are processed entirely in your browser using WebAssembly technology. Your file is never uploaded to our servers. The conversion happens locally on your device, providing full privacy.
The maximum file size is 250 MB per file. This limit applies to all format types. For video and audio files, conversion speed depends on your device's processing power since the conversion runs in your browser.