Convert MP3 to FLAC

Convert MP3 audio to FLAC format with adjustable compression levels.

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How to Convert MP3 to FLAC?

Move your audio collection into the robust, lossless FLAC format for safekeeping and editing.

Upload MP3s

Select or drag and drop your MP3 files here. We handle batch uploads easily.

Set Compression

Choose a compression level. Level 8 gives the smallest file size but takes slightly longer.

Download FLAC

Get your new lossless FLAC files instantly, ready for your archive.

Pro Tip: File Size

Note that your FLAC files will be significantly larger than the source MP3s (sometimes 5-10x larger) because they are storing uncompressed audio data.

Engineering Philosophy

Format Longevity
and Archival.

While converting MP3 to FLAC cannot restore the data lost during the original MP3 compression, it serves a crucial purpose: preservation.

Our converter decodes the MP3 audio into raw PCM streams and then losslessly compresses it into the FLAC container. This means the audio you hear in the FLAC file is bit-for-bit identical to the decoded MP3, with zero additional quality loss.

This is vital for editors and archivists. By moving your audio into a lossless container like FLAC, you prevent "generation loss"—the degradation that happens when you edits and re-save a lossy file over and over.

Crafted by Audio Engineers

Zero Loss

The conversion process adds absolutely no noise or distortion.

Compression

Adjustable compression levels (0-8) to balance size vs speed.

Universal Edit

Standard FLAC format for any DAW

Understanding MP3 to FLAC

MP3 is a lossy format. It throws away data to save space. Once that data is gone, it is gone forever.

FLAC (Free Lossless Audio Codec) is like a ZIP file for audio. It compresses audio without throwing anything away.

When you convert MP3 to FLAC, you are essentially taking a low-resolution photo and putting it in a high-quality frame. The picture doesn't get sharper, but the frame ensures it won't fade any further. This is critical if you plan to edit usage in video production, remixing, or format shifting for specific hardware.

Format Comparison

Feature

MP3 (Source)

FLAC (Output)

Data Type

Lossy

Lossless

Editability

Degrades with saves

Perfect integrity

File Size

Small

Large

Best For

Streaming / Web

Archiving / Editing

Why RiseConvert?

Clean Conversion: We adhere to strict FLAC standards, ensuring your files work on all supported players (VLC, Foobar2000, Audiophile gear).
No Transcoding Artifacts: We don't try to "enhance" the audio with fake upscale filters that introduce noise. We just decode and encapsulate.
Privacy: We don't analyze your audio content. It's just bits and bytes to us, processed securely.

Audio Terms

Container

The file format that holds the audio stream (e.g., .flac, .mp3, .wav).

Transcoding

The process of converting from one digital encoding to another (e.g., MP3 -> FLAC).

Compression Level

In FLAC, this determines how much CPU power to use to squeeze the file size down. Level 8 is max.

Artifacts

Distortions caused by lossy compression. Converting to FLAC freezes these artifacts in place.

Common Questions

Does FLAC sound better than MP3?

Only if the original source was high quality. Converting a bad MP3 to FLAC just makes a perfect copy of a bad MP3.

Storage Space?

Be prepared for files to be about 4-6 times larger than their MP3 counterparts.

Tool Specs

Input FormatMP3, M4A

Output FormatFLAC

Sample RateSource Native

CompressionLevels 0-8

Security TLS Encrypted

Private & Safe

We respect your audio data. All uploads are encrypted and deleted automatically.

100% Secure

User Feedback

"I need to import some old MP3 samples into my DAW. Converting to FLAC first stopped the weird glitching."

John M.

Music Producer

"Great tool for standardizing my library. I wish it was faster, but Level 8 compression takes time I guess."

Kelly W.

Archivist

Frequently Asked Questions

Does this make my MP3 sound like a CD?

No. An MP3 has already lost quality that cannot be recovered. This conversion just puts that audio into a lossless container so it doesn't lose ANY MORE quality.

Why is the FLAC file bigger if the quality is the same?

Because FLAC stores audio data differently. MP3 throws away data to be small. FLAC keeps everything (even the 'noise' of the MP3 artifacts) and compresses it mathematically without loss, which requires more space.

What compression level should I use?

We recommend Level 8. It provides the best file size savings. It takes a little longer to create, but decoding (playback) speed is the same for all levels.

Is this tool free?

Yes, RiseConvert is free for all users.

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