Step 1: Provide your WMA files using the button above or by toss and let go.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Fetch your converted AIFF files.
WMA to AIFF Conversion FAQ
How do I convert WMA audio to AIFF without losing quality?
+
Upload the WMA file and the converter chooses the AIFF codec / bitrate combination that matches the source profile. Lossless AIFF (WAV / FLAC / ALAC) preserves every sample exactly; lossy AIFF (MP3 / AAC / OGG / Opus) defaults to 192 kbps which is transparent for almost all music content. WMA is lossy by default, in an ASF container, with lossless and voice-optimised variants that are rarely encountered. AIFF stores uncompressed big-endian PCM — the Apple-side equivalent of WAV, with the same bit-for-bit fidelity.
Does converting WMA to AIFF improve the audio quality?
+
No, and it is worth being blunt: nothing can. The WMA already discarded detail during its original encode, and wrapping what remains in a lossless AIFF preserves exactly that — no more. The file gets several times larger and sounds identical. It is still the right move before editing, because AIFF will not add a second generation of artefacts when you export. AIFF is the studio interchange format on macOS, handles metadata better than plain WAV, and imports into Logic and Pro Tools instantly. WMA is unsupported almost everywhere outside Windows, and older WMA files may carry DRM that blocks conversion entirely.
Why will some of my WMA files not convert?
+
DRM. A subset of WMA files are encrypted by the store or the software that issued them, and encrypted audio cannot be decoded by any converter. Anything you ripped yourself, recorded, or bought without protection converts normally; a licensed purchase will not.
What bitrate does the AIFF file end up at?
+
Default 192 kbps for lossy AIFF; pass-through for lossless AIFF. Override to 320 kbps if you want maximum lossy fidelity, 128 kbps for size-constrained podcast distribution, or 96 kbps for voice-only sources where the smaller file matters more than studio detail.
Will going from WMA to AIFF actually reduce my audio quality?
+
If WMA is lossy (MP3, AAC) and AIFF is lossless (WAV, FLAC), the AIFF is no better than the WMA — you cannot recover information already discarded by the lossy WMA codec. If WMA is lossless and AIFF is lossy, expect the AIFF encoder to recompress; at 192 kbps the loss is imperceptible to most ears.
Does the WMA to AIFF converter keep ID3 / metadata tags?
+
Yes — title, artist, album, year, track number, album art, BPM, replay-gain are read from the WMA container and written into the equivalent fields on the AIFF container. ID3v2 (MP3), Vorbis comments (OGG, FLAC), MP4 atoms (AAC, M4A), RIFF INFO (WAV), iXML chunks all map cleanly. AIFF is Apple’s Audio Interchange File Format from 1988, built on the same IFF chunk design as AVI’s RIFF.
Can I batch-convert hundreds of WMA files into AIFF?
+
Yes — drop a folder of WMA files in and we process them in parallel. Premium has more parallel workers and no per-file size cap, so a 500-file batch finishes in minutes rather than tens of minutes. Folder structure is preserved in the output ZIP.
Will the AIFF keep the same sample rate as the WMA?
+
By default yes (a 48 kHz WMA produces 48 kHz AIFF, a 44.1 kHz WMA produces 44.1 kHz AIFF). For specific compatibility — e.g. downsampling 96 kHz studio masters to 44.1 kHz AIFF for CD burning, or upsampling 22 kHz voicemail to 44.1 kHz AIFF — the sample-rate dropdown applies high-quality SOX-style resampling.
Can I normalize loudness in the WMA to AIFF step?
+
Yes — the loudness-normalize option applies ITU-R BS.1770 / EBU R128 normalization to the AIFF output, targeting -14 LUFS (streaming standard) or -16 LUFS (podcast standard) or a custom value. Useful when batch-converting tracks with varying mastering levels into a single AIFF playlist.
Will the AIFF play on my car stereo / iPod / Sonos / Bluetooth speaker?
+
MP3 plays universally on every device made in the last 20 years. AAC plays on Apple, most Android, Sonos, and modern car stereos. FLAC plays on Sonos and recent Android, less well on older iPods. WAV plays on everything but the file is huge. The device-target dropdown picks a safe AIFF codec for the platform you specify. AIFF is as large as WAV with worse support outside the Apple world, so it is a poor choice for distribution.
Is my WMA file private during conversion?
+
Yes — uploaded WMA files are processed in isolated workers and deleted within minutes. We never play, store, or share the audio content. The pipeline runs on hardware we control end-to-end; no third-party services receive your file.
How long does converting a 1-hour WMA to AIFF take?
+
Same-codec re-mux (e.g. AAC inside M4A -> AAC inside MP4): 10-30 seconds. Codec change (e.g. FLAC -> MP3 or WAV -> AAC): typically 10-20% of source duration, so a 1-hour WMA -> AIFF finishes in 6-12 minutes on the standard pipeline.
