AIFF Won't Open? Convert to AMR Instantly
Fast, instant AIFF to AMR conversion. No signup required. Just drop your .aiff file and get .amr in seconds.
Batch Settings
Quality reduction ahead
AIFF is uncompressed, meaning every bit of data is preserved. AMR uses lossy compression — some data is permanently discarded to reduce file size. At high quality settings the difference is usually imperceptible, but the original data cannot be recovered.
Some metadata may not survive
Your AIFF file may contain ID3v2, AIFF chunks metadata. AMR has limited or no support for these metadata types. Location data (GPS), camera settings, and color profiles may be stripped during conversion.
What compression artifacts to expect
AMR lossy compression can produce heavy distortion, narrow bandwidth (speech only). At the high quality settings CocoConvert uses by default, these are usually invisible to the eye. Lower quality settings trade visual fidelity for smaller file sizes.
About AIFF to AMR Conversion
Dealing with a AIFF file that won't open on your device? You're not alone — AIFF compatibility issues are one of the most common reasons people search for a file converter. AIFF is Apple's uncompressed audio format — equivalent to WAV in quality.
The fix is simple: convert your AIFF to AMR. AMR is a speech-optimised audio codec used in mobile voice recordings. This conversion lets you reduce file size without visible quality loss, solving the problem in seconds rather than hours of troubleshooting.
Full Name: AIFF uses Audio Interchange File Format, while AMR uses Adaptive Multi-Rate Audio. Compression: AIFF uses None (uncompressed), while AMR uses Lossy. Typical File Size: AIFF uses 10 MB per minute at 44.1 kHz/16-bit stereo, while AMR uses 0.1 MB per minute (extremely compressed). AMR lossy compression can produce heavy distortion, narrow bandwidth (speech only). At the high quality settings CocoConvert uses by default, these are usually invisible to the eye. Lower quality settings trade visual fidelity for smaller file sizes.
CocoConvert processes your AIFF file on secure servers in Germany — upload, convert, download. Your files are encrypted via TLS and automatically deleted within 24 hours. No account needed, no software to install, and it works on any device with a browser.
This conversion is ideal when you Your AIFF file is too large for email attachments or upload limits, or when you You want to reduce storage usage without noticeably affecting quality.
The conversion engine behind CocoConvert uses FFmpeg, Sharp, and qpdf — the same open-source libraries trusted by Netflix, YouTube, and enterprise platforms. Pro users can batch convert up to 100 files at once.
How to Convert AIFF to AMR
- 1
Add your AIFF file
Drag and drop your .aiff file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick AMR output
Select .amr as the target format. CocoConvert automatically applies the best quality settings for this conversion.
- 3
Start conversion
Hit the Convert button. The audio engine processes your file server-side — no CPU drain on your device.
- 4
Save your file
Once done, download your .amr file. For batch jobs, download all at once as a zip.
What Happens When You Convert AIFF to AMR
Your AIFF audio is decoded into raw PCM samples, then re-encoded as AMR. Some audio data is permanently discarded during compression.
Your AIFF file is decoded — compressed audio becomes raw PCM waveform data
The raw audio is re-encoded using Adaptive Multi-Rate Audio's lossy codec
Metadata (tags, artwork, track info) is transferred where AMR supports it
The AMR file is saved and ready for download
AIFF vs AMR — Detailed Comparison
| Feature | .AIFF | .AMR |
|---|---|---|
| Full Name | Audio Interchange File Format | Adaptive Multi-Rate Audio |
| Compression | None (uncompressed) | Lossy |
| Typical File Size | 10 MB per minute at 44.1 kHz/16-bit stereo | 0.1 MB per minute (extremely compressed) |
| Platform Support | Very Wide | Limited |
| Browser Support | Limited | none |
| Year Created | 1988 | 1999 |
| Open Standard | No | Yes |
Should You Convert AIFF to AMR?
When to Convert
- ✓Your AIFF file is too large for email attachments or upload limits
- ✓You want to reduce storage usage without noticeably affecting quality
Frequently Asked Questions
Why won't my AIFF file open?
AIFF files may not open if your device lacks the right codec or application. Converting to AMR — a more widely supported format — usually resolves this. AMR is a speech-optimised audio codec used in mobile voice recordings.
Is it safe to convert AIFF to AMR online?
Yes. CocoConvert encrypts your file via TLS, processes it on isolated servers in Germany, and permanently deletes it within 24 hours. Your files are never shared or analysed.
Will I lose quality converting AIFF to AMR?
AMR lossy compression can produce heavy distortion, narrow bandwidth (speech only). At the high quality settings CocoConvert uses by default, these are usually invisible to the eye. Lower quality settings trade visual fidelity for smaller file sizes. CocoConvert uses high-quality encoder defaults to preserve as much fidelity as possible.
How large can my AIFF file be?
Free users can convert files up to 250 MB each. Pro users get a 5 GB limit per file, and Business API users have custom limits.
Can I convert AIFF to AMR on my phone?
Absolutely. CocoConvert works in any modern browser — iOS Safari, Android Chrome, and all desktop browsers. No app required.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.