CONVERT AMR → AIFF (AMR to AIFF)
Fast, secure AMR to AIFF conversion. No registration required.
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HOW TO CONVERT AMR → AIFF
Give us the AMR
Select a AMR (or several for batch). We read the header to pick decoder settings automatically.
Re-encode to AIFF
The audio is decoded, optionally resampled, and re-encoded as AIFF at transparent default bitrate.
Retrieve your AIFF
Grab the download as soon as it is ready. Typical jobs finish in seconds for short clips.
Here is the short version — AMR is the narrowband speech codec built for mobile voice recordings and 3G calls. Hence the need for AIFF. Turn your AMR audio into a widely-supported AIFF file. The conversion happens server-side through FFmpeg — the same engine behind every major audio editor — so the output plays cleanly on phones, car stereos, DJ software and streaming tools. A quick refresher — AMR is the narrowband speech codec built for mobile voice recordings and 3G calls. By contrast, AIFF is Apple's uncompressed Audio Interchange File Format, the macOS equivalent of WAV.
Why convert AMR to AIFF
The motivation for a AMR → AIFF conversion is almost always practical: a playback device, hosting platform or editing suite that insists on AIFF. The audio quality trade-off is controllable via bitrate; the compatibility win is immediate and unambiguous.
AMR vs AIFF — Technical specifications
Side-by-side comparison of the technical details.
AMR
- MIME type
- audio/amr
- Extensions
- .amr, .3ga
- Standard
- 3GPP TS 26.071 (narrowband), TS 26.171 (wideband)
- Sample rate
- 8 kHz (AMR-NB); 16 kHz (AMR-WB)
- Bitrates
- 4.75, 5.15, 5.9, 6.7, 7.4, 7.95, 10.2, 12.2 kbps
- MIME Type
- audio/amr
- Extension
- .amr
- Category
- Audio Files
- Full Name
- AMR Audio
- Conversion Engine
- FFMPEG
AIFF
- Extensions
- .aif, .aiff, .aifc
- MIME Type
- audio/aiff
- Extension
- .aiff
- Category
- Audio Files
- Full Name
- AIFF Audio
- Conversion Engine
- FFMPEG
- MIME types
- audio/aiff, audio/x-aiff
- Byte order
- Big-endian
- Max bit depth
- 32 bits (PCM or float)
- Max sample rate
- 192 kHz (practical); unlimited (spec)
| Specification | AMR | AIFF |
|---|---|---|
| MIME type | audio/amr | — |
| Extensions | .amr, .3ga | .aif, .aiff, .aifc |
| Standard | 3GPP TS 26.071 (narrowband), TS 26.171 (wideband) | — |
| Sample rate | 8 kHz (AMR-NB); 16 kHz (AMR-WB) | — |
| Bitrates | 4.75, 5.15, 5.9, 6.7, 7.4, 7.95, 10.2, 12.2 kbps | — |
| MIME Type | audio/amr | audio/aiff |
| Extension | .amr | .aiff |
| Category | Audio Files | Audio Files |
| Full Name | AMR Audio | AIFF Audio |
| Conversion Engine | FFMPEG | FFMPEG |
| MIME types | — | audio/aiff, audio/x-aiff |
| Byte order | — | Big-endian |
| Max bit depth | — | 32 bits (PCM or float) |
| Max sample rate | — | 192 kHz (practical); unlimited (spec) |
AMR vs AIFF — Strengths and limitations
What each format does best, and where it falls short.
AMR Strengths
- Extremely low bitrate — 4.75-12.2 kbps for speech.
- Designed for error-prone mobile channels — handles packet loss gracefully.
- Tiny file sizes — hours of voice in a few MB.
- Mandatory codec in all 3G/UMTS phones — universal cellular compatibility.
Limitations
- Speech-only — music sounds distorted.
- Narrowband (8 kHz sample rate) — muffled compared to modern codecs.
- Patent-encumbered until recently — licensing fees slowed adoption outside telephony.
AIFF Strengths
- Lossless and uncompressed — bit-exact audio reproduction.
- Native to macOS and all Apple Pro Audio apps.
- Simple structure — trivially parsed by audio libraries.
- Supports up to 32-bit float, 192 kHz, and multi-channel audio.
- Rich metadata via named chunks (annotations, markers, MIDI).
Limitations
- Enormous file sizes — 10 MB per minute at CD quality.
- No built-in compression — use FLAC for lossless with smaller files.
- Big-endian byte order confuses tools written on little-endian hardware.
Quality & Compatibility
The AIFF output is as good as the AMR source allows. If the AMR was encoded at 96 kbps, the AIFF cannot reconstruct detail the encoder already dropped; picking a very high AIFF bitrate just produces a larger file. Match AIFF bitrate to the AMR quality for the best balance.
Tips for Best Results
- Sample-rate mismatches between AMR and target device (48 kHz phone output from a 44.1 kHz track) are handled automatically; no manual resampling needed.
- For audiobook delivery, match the platform spec exactly — ACX requires 192 kbps CBR 44.1 kHz stereo, for example.
- Batch-convert an album in one job so every track shares identical encoder settings and loudness normalisation.
Frequently Asked Questions
Lossy-to-lossy conversions (most combinations) re-compress the audio, which technically introduces some loss. At a 192 kbps or higher target it is inaudible on normal equipment. Lossy-to-lossless conversions freeze the existing quality but cannot improve it; lossless-to-lossy transcodes are only as good as the target bitrate you choose.
For voice content (podcasts, audiobooks, lectures) 128 kbps is indistinguishable from higher bitrates. For music, 192-256 kbps covers most listening; 320 kbps is the ceiling for AIFF and the right choice for audio you plan to edit further. Above that, prefer a lossless target instead.
Yes. Title, artist, album, year and cover art travel from the AMR container to the AIFF container automatically where both formats support them. If a tag field has no AIFF equivalent, it is dropped silently. Use any tag editor (Mp3tag, MusicBrainz Picard) to fine-tune afterwards.
AMR Audio
Source formatAMR (Adaptive Multi-Rate) is an audio format optimized for speech, used in phone calls.
AIFF Audio
Target formatAIFF is Apple's uncompressed audio format, equivalent to WAV in the macOS ecosystem. It stores CD-quality PCM audio and is widely used in professional audio production on Apple hardware.
Common Use Cases
Share across platforms
Send AIFF files to anyone without worrying about whether they have the right software for AMR.
Embed in documents
Drop AIFF output into Word, Google Docs, PowerPoint, Notion or a website without conversion warnings.
Optimize size
AIFF often produces smaller files than AMR for web, email and storage.
Archive & future-proof
Store in a widely-supported format that will still open on future operating systems without legacy plugins.
AMR vs AIFF — Typical file sizes
Approximate file sizes for common scenarios.
- 1-min voice memo 45-90 KB
- 1-hour voicemail archive 3-5 MB
- 3-min song (CD quality) 30 MB
- 3-min song (24-bit / 96 kHz) 100 MB
- Full album (CD, 10 tracks) 450 MB
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Related comparisons
See these formats side by side to understand which fits your use case best.
Related Guides
AIFF Format: The Complete Guide to Audio Interchange File Format
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Read guide →AIFF: Complete Guide to Audio Interchange File Format
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Read guide →AMR Audio Format: The Mobile Voice Recording Standard Explained
Learn what AMR audio is, its history as a 3GPP/GSM codec, AMR-NB vs AMR-WB differences, and how to convert AMR voice recordings to MP3, WAV, or AAC using...
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