Convert M4A to AIFF
Convert M4A files to AIFF locally, completely free and with maximum privacy.
Drag and drop your files here
or click to browse local files (large files supported, limited only by browser RAM)
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How to convert M4A to AIFF
- Drop your .m4a files above, or click Upload Files. You can add many files at once.
- AIFF is already selected as the output. Open the settings (gear icon) to fine-tune the result.
- Click Convert All. FFmpeg runs inside your browser through WebAssembly; nothing is uploaded.
- Download your .aiff files as soon as each one finishes.
What to know about M4A to AIFF conversion
- You can choose the bitrate, sample rate and channels (mono, stereo or a 3D spatial effect).
M4A vs AIFF
| Feature | M4A (MPEG-4 Audio) | AIFF (Audio Interchange File Format) |
|---|---|---|
| Compression | lossy or lossless | uncompressed |
| Best for | iTunes, iPhone ringtones and podcasts | professional audio work on macOS |
| Opens in | Apple devices, browsers and most media players | Logic Pro, GarageBand, iTunes and most DAWs |
M4A (MPEG-4 Audio): An audio-only file extension for MPEG-4 files, commonly encoded with AAC or ALAC codecs for high quality.
AIFF (Audio Interchange File Format): An uncompressed audio format developed by Apple, the Mac equivalent of WAV.
Conversion options
- 16-bit or 24-bit PCM
- Sample rate: 22.05, 44.1 or 48 kHz
- Mono, stereo or 3D spatial audio
- Playback speed (0.5× to 2×)
Frequently asked questions
Is it safe to convert M4A to AIFF here?
Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.
Is there a file size limit?
There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.
Can I convert several M4A files at once?
Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.
Related conversions
Need the opposite? Convert AIFF to M4A.
Convert M4A to other formats
Convert other formats to AIFF
- MP4 to AIFF
- MP3 to AIFF
- WAV to AIFF
- MOV to AIFF
- FLAC to AIFF
- WEBM to AIFF
- MKV to AIFF
- AAC to AIFF
- OGG to AIFF
- OPUS to AIFF
- AVI to AIFF
- WMA to AIFF
See every M4A converter and AIFF converter, or browse the full converter directory.