How to convert MP3 to FLAC
- Select your MP3 file (or drag & drop it) — the file never leaves your device.
- Adjust the conversion options if you need to — the defaults work great for most files.
- Click the convert button and let your browser process the file locally.
- Download your new FLAC file. Done — in four quick steps.
Why convert MP3 to FLAC?
There are plenty of good reasons to convert MP3 to FLAC — here are the ones that matter most:
FLAC stores every pixel losslessly, so the output is larger but 100% faithful to the original.
FLAC is lossless — no audio data is discarded, making it ideal for archiving and further editing.
Because all processing happens on your device, converted files are ready to download in seconds — even on slower connections.
MP3 vs FLAC: what changes?
Here's how MP3 and FLAC differ at a glance — this is exactly what the conversion changes for your file:
| Property | MP3 | FLAC |
|---|---|---|
| Compression | Lossy | Lossless |
| Transparency | — | — |
| Animation | No | No |
| Vector graphics | — | — |
| Compatibility | Excellent | Good |
Format information
About MP3
- Compression
- Lossy
- Transparency
- —
- Compatibility
- Excellent
About FLAC
- Compression
- Lossless
- Transparency
- —
- Compatibility
- Good
Frequently asked questions
Is the MP3 to FLAC converter really free?
Yes. Every tool on converteren.com is free, with no sign-up, no watermarks and no hidden limits on the number of files you can convert.
Is my file uploaded to a server?
No. The conversion runs entirely in your browser using modern web technology. Your MP3 file never leaves your device — you could even disconnect from the internet after loading the page.
Will the quality be affected?
That depends on the formats involved. FLAC stores every pixel losslessly, so the output is larger but 100% faithful to the original.
How large can my file be?
You can convert files up to 250.0 MB in this tool. Because processing happens locally, the practical limit also depends on your device's memory — modern laptops and phones handle large files comfortably.
Do I need to install anything?
No. Converteren.com works in any modern browser — Chrome, Firefox, Safari or Edge — on desktop and mobile. There's nothing to download or install.