How to Convert FLAC to Apple Lossless: Best Tools & Methods

If you have a FLAC music library and want to play it through Apple Music, iTunes, or on an iPhone, you may run into one problem: Apple's ecosystem has traditionally preferred its own lossless format, ALAC (Apple Lossless Audio Codec). Converting FLAC to Apple Lossless is straightforward once you know which tool to use, and the good news is that both formats are lossless, so the conversion won't degrade audio quality.

This guide covers the most reliable ways to convert FLAC files to Apple Lossless, how each method handles batch conversion and metadata, and what to watch for if you want to keep your library clean.

 Overview: Convert FLAC to ALAC Methods

FLAC vs Apple Lossless

FLAC (Free Lossless Audio Codec) is an open-standard lossless format supported by most audio players and devices. Apple Lossless, officially called ALAC (Apple Lossless Audio Codec), is Apple's equivalent, stored in an .m4a container and natively supported across the Apple ecosystem.

Both formats encode audio without any data loss. A FLAC file and an ALAC file made from the same master recording will sound identical. The difference is compatibility, not quality.

While Apple has added FLAC playback support in newer versions of iOS and macOS, importing FLAC files into an Apple Music library still works more reliably with ALAC. If you want clean playback and proper metadata inside the Apple Music app, converting to ALAC is still the more consistent path. 

Method 1: Convert FLAC to Apple Lossless with fre:ac (Free)

fre:ac is a free, open-source audio converter that runs on Windows, macOS, and Linux. It handles FLAC to ALAC conversion in batch, preserves metadata, and doesn't require a paid license.

How to use fre:ac

1. Download and install fre:ac from the official site.
2. Open fre:ac and drag your FLAC files (or folder) into the file list.
3. Click the output format dropdown and select Apple Lossless (ALAC).
4. Choose your output folder.
5. Click the Convert button to start.

Batch & stability: fre:ac handles large queues without issue. It processes files sequentially and reports errors per file, so a bad file doesn't abort the whole batch. Useful if you're converting an entire album library at once.

Library: Metadata transfer is generally reliable for standard fields — title, artist, album, year, track number. Cover art carries over in most cases, though embedded art from unusual FLAC taggers occasionally gets dropped. Verify a sample before converting hundreds of files.

Workflow: The UI is functional but dated. No account required, no ads, installs quickly. The format selector can be hard to spot on first use — look for the output encoder dropdown on the right side of the toolbar, not a menu.

fre:ac is a good fit if you want a completely free solution that works on any OS. It's not ideal if you need advanced renaming rules or want a polished UI.

Method 2: Convert FLAC to Apple Lossless with XLD (Mac Only)

X Lossless Decoder (XLD) is a Mac-specific audio tool that audiophile communities have recommended for years. It handles FLAC to ALAC conversion cleanly and is particularly good at preserving ReplayGain tags and embedded cue sheets.

How to use XLD

1. Download XLD from the Mac App Store or the developer's site.
2. Open XLD Preferences and set the output format to ALAC.
3. Drag FLAC files onto the XLD window or use File > Open.
4. Set the output directory and start the conversion.

Batch & stability: XLD processes folders cleanly and handles large batches without stalling. It reports format or read errors individually, which is helpful when working with older or ripped FLAC files that may have inconsistent tagging.

Library: Metadata handling is one of XLD's strengths. It reliably transfers extended tags, cover art, and ReplayGain values. For users migrating a curated FLAC library into Apple Music, this matters more than most free tools acknowledge.

Workflow: Mac-only, free, no account needed. The preferences panel is where you configure output format — it's not a per-job setting, which can trip up new users expecting a per-conversion dialog.

XLD is a strong choice for Mac users with organized FLAC libraries who care about metadata accuracy. Not available on Windows.

Method 3: Convert FLAC to Apple Lossless with dBpoweramp (Windows / Mac, Paid)

dBpoweramp is a paid audio converter with a long track record among audiophiles and library managers. It supports ALAC output, parallel multi-core encoding for large batches, and integrates with music databases for metadata lookup.

How to use dBpoweramp

1. Install dBpoweramp and the ALAC codec (available from the dBpoweramp codec page).
2. Right-click your FLAC files or folder in Windows Explorer (or use the Mac app).
3. Select Convert To and choose Apple Lossless as the output format.
4. Confirm output location and start the conversion.

Batch & stability: dBpoweramp uses multi-threaded encoding, which makes large library conversions noticeably faster than single-threaded free tools. It handles thousands of files without issue and generates a conversion log you can review afterward.

Library: Tag handling is thorough, including embedded album art, multiple artist fields, and compilation flags. For users with carefully tagged libraries, dBpoweramp rarely introduces naming or tag regressions.

Workflow: Requires a paid license (one-time purchase, around $38 as of recent pricing — verify current pricing on the official site). The Windows context-menu integration makes it convenient once installed, but the setup is more involved than fre:ac.

dBpoweramp is a good fit for users converting large, carefully curated libraries where metadata accuracy and conversion speed both matter. It's not necessary for occasional small batches.

Method 4: Use Apple Music (or iTunes) to Import FLAC Directly

On more recent versions of macOS and Windows, the Apple Music app and iTunes can import FLAC files directly and optionally convert them to ALAC when adding them to your library.

How to convert FLAC to ALAC via Apple Music

1. Open Apple Music (macOS) or iTunes (Windows).
2. Go to Preferences > Files > Import Settings.
3. Set the import format to Apple Lossless Encoder.
4. Drag your FLAC files into the Apple Music library or use File > Import.
5. Select the imported FLAC files, right-click, and choose Convert > Create Apple Lossless Version.

This method works without extra software if you're already using Apple Music. However, it's slower for large libraries, and the original FLAC file stays in place — you end up with duplicates unless you manually remove the originals.

It's a practical option for occasional imports but not a clean workflow for converting a library of hundreds of albums.

Comparison: FLAC to Apple Lossless Converter Overview

Does Converting FLAC to Apple Lossless Affect Audio Quality?

No. Both FLAC and ALAC are lossless formats. Converting between two lossless formats is a container re-wrap — the underlying PCM audio data stays bit-perfect. You will not hear any difference between the original FLAC and the resulting ALAC file.

This is unlike converting from a lossless format to a lossy one (such as FLAC to MP3), which does permanently remove audio data.

FAQs

Final Thoughts

For most users with an existing FLAC library, fre:ac is the easiest free starting point. It works on Windows, Mac, and Linux without any sign-in or payment. Mac users with organized libraries will likely prefer XLD for its metadata accuracy. If you're managing thousands of albums, dBpoweramp's multi-core batch processing and conversion logging are worth the cost.