Convert AMR to AIFF
Your AMR goes in and an AIFF comes out. AIFF is uncompressed audio on a Mac, the Apple counterpart to WAV. Expect the AIFF to be a good deal bigger, which is what keeping every detail costs. Your file never leaves your computer.
How to convert AMR to AIFF
- 1 Drop your AMR .amr file onto the page, or click to browse for it.
- 2 Check the options. Nothing is thrown away on the way to AIFF, so there is no quality dial to set.
- 3 Convert. The work happens on your own machine, so how long it takes depends on your computer and the file.
- 4 Download the AIFF, or add more files and do the whole set in one go.
Why convert AMR to AIFF
- You want a copy that will not get any worse each time you edit and save it, and AIFF gives you that.
- Exactly as recorded, identical in quality to a WAV.
- Holds track details better than a plain WAV.
- Sample libraries made for Apple software.
- AMR: narrowband and unusable for anything but speech.
AMR compared with AIFF
How the two formats differ on the things that decide whether a conversion is worth making.
| Property | AMR | AIFF |
|---|---|---|
| File extension | .amr | .aiff |
| Compression | Lossy | Uncompressed |
| Colour depth | 8 kHz narrowband, 4.75 to 12.2 kbps | 8 to 32 bit, any sample rate |
| Typical file size | Smaller | Largest |
| Browser support | No browser support | Some browsers |
| Introduced | 1999 | 1988 |
| Developed by | 3GPP | Apple |
Quality and what changes
AIFF stores every pixel exactly, but it can only preserve what the AMR already contained. The compression artefacts baked into the source are preserved perfectly along with everything else, so the picture does not improve, it just stops degrading. Expect the file to grow substantially, often several times over, because AMR was discarding data that AIFF now has to write out in full.
- AMR files can be read here but not created, so conversions run one way only.
- One AIFF limitation to keep in mind: less universally supported on Windows and web.
Questions about AMR to AIFF
Does converting AMR to AIFF improve the quality?
No. AIFF preserves what it is given perfectly, including the compression artefacts already present in the AMR. It stops further loss from happening, which is worth doing before editing, but it cannot recover detail that was discarded.
Why is my AIFF bigger than the AMR?
Because AMR was discarding data and AIFF is not. A lossless format has to write out every pixel it is handed, artefacts included, so growing several times over is normal and does not mean anything went wrong.
Is my AMR file uploaded anywhere?
No. The whole thing runs inside the browser tab you already have open. Your AMR is read straight from your own disk, converted on your machine and handed back as an AIFF. Nothing is sent anywhere, nothing is stored and there is no account.
Is there a file size limit?
There is no server-side limit because no server sees the file. The real ceiling is your device memory, since the input and the output both have to fit in the tab. A few hundred megabytes is usually fine on a desktop machine and considerably less on a phone.
Can I convert several AMR files at once?
Yes. Add as many as you like and they are processed one after another, then offered as separate AIFF downloads or as a single ZIP. Speed depends on your own processor rather than on a queue.
Does the converter work offline?
Yes, after the page has loaded once. The engine is cached by the browser, so you can disconnect, reload and keep converting. That falls out of doing the work locally rather than being a separate mode you switch on.