Best Free M4A to FLAC Converter

When you need to convert M4A to FLAC quickly, you should not have to wrestle with installers or confusing menus. Our online audio converter runs in your browser: upload a .m4a file, choose FLAC, and download a clean, tag-preserved FLAC file within seconds. If your M4A actually contains ALAC (Apple Lossless), converting to FLAC preserves the original, lossless audio. If your M4A is AAC (lossy), converting to FLAC will not restore missing data — we make that clear so you don’t chase a phantom “quality boost.” This honesty saves you time and prevents wasted storage. On top of that, OKmusi M4A to FLAC converter removes uploaded files automatically, so your files don't linger on servers after conversion.

Step 1. Open OKmusi free M4A to FLAC converter in any modern browser. Click Upload or drag your .M4A file onto the page.

Step 2. Choose FLAC as the output format. Click Convert and wait a short moment. Our servers handle the encoding fast and reliably.

Step 3. Download the FLAC file for free. The uploaded file will be removed automatically from our servers after processing for privacy.

Keep Metadata Intact

One of the most frustrating results from M4A to FLAC conversion is losing your tags and album art. With OKmusi, tags stay in place. That means your music player continues to display artist, album, track number, and artwork — no manual retagging after conversion.

Cross-Platform Convenience

If you search for phrases like convert M4A to FLAC on Mac on Windows, you’ll find that the key constraint is the player’s codec support. Our online M4A to FLAC converter produces standards-compliant FLAC files that work across platforms without forcing you to install extras.

Fast & Reliable FLAC Conversion

You care about speed and trust. Our free M4A to FLAC conversion service emphasizes a clean interface with no ads or popups, high conversion success rates, and automatic file deletion. For many users, this solves the common problems they complain about when testing other cloud audio converters.

Completely Free to Use

You don’t need to create an account or pay a dime. Our online M4A to FLAC converter is 100% free, allowing you to change your M4A files to FLAC instantly and anonymously.

Pro Audio Toolkits is the app you use when you outgrow one-off online jobs. It supports true batch convert M4A to FLAC workflows, customizable bitrates and bitstreams, and offline processing that runs at native disk speed. The toolkit also includes a compressor to tune file size vs. perceived quality, a trimmer for precise edits such as fades and speed changes, and a joiner that preserves the original codec and tags. Pro Audio Toolkits is for people who manage large libraries and value speed, predictability, and fine codec control. Try it now.