MP3 to FLAC Converter
Convert MP3 audio to FLAC (lossless FLAC) for archiving without quality loss. Batch, private, in-browser.
How to convert MP3 to FLAC
- 1
Choose your MP3 files
Click the upload area or drag files onto it. Nothing is uploaded — files are opened locally.
- 2
Start the conversion
Press the convert button. Your browser converts the files in seconds.
- 3
Download the result
Save each file individually or everything at once as a ZIP.
Need FLAC for archiving without quality loss? Convert MP3 files on your device — nothing is uploaded, and you can convert a whole album at once.
Read the full guide with screenshotsWhat is MP3?
MP3 is the universal compressed audio format. It plays on every device, car stereo and music app with small file sizes.
What is FLAC?
FLAC (Free Lossless Audio Codec) compresses audio without losing any quality. It is popular with audiophiles and music archives, but many phones, car stereos and players don’t support it.
Is it private?
Yes. Unlike upload-based converters, ZapMorph processes files inside your browser tab, so the file stays on your device. It is never transmitted, stored or logged — close the tab and it’s gone.
Frequently asked questions
Is the mp3 to flac converter free?
Yes, once a day. Convert one file up to 25 MB a day without an account. A free account gets one run a day on any Pro tool with files up to 50 MB; Pro and Lifetime plans are unlimited.
Are my files uploaded to a server?
No. The conversion runs entirely in your browser, so your files never leave your device. We only count how many files you convert — never their names or contents.
What is the maximum file size?
Up to 25 MB per file without an account, 50 MB with a free account, and 1 GB on Pro. Very large files also depend on your device’s memory.
Can I convert multiple MP3 files at once?
Yes. Select several MP3 files at once — up to 5 on the free plan or 50 on Pro — and download all results in a single ZIP.
Does it work on Mac, Windows, iPhone and Android?
Yes. It works in any modern browser — Chrome, Edge, Firefox and Safari — on desktop and mobile, with nothing to install.
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