Turn AMR files into OGG in a couple of clicks. AMR is a narrowband speech codec from mobile voice recordings; OGG is open, royalty-free lossy audio. Some detail is discarded to fit the target format; how much depends on the format and your settings.
Drop your files here
AMR files (.amr) · up to 300 MB each
or paste files from your clipboard
Ready when you are
Drop a AMR file above and FileTools360 will turn it into OGG — right here on your device, without uploading anything.
Drag them onto the drop area, choose them from your device, or paste them from your clipboard. You can queue several at once. Nothing is sent anywhere — the file stays on this device.
The defaults suit most people. Open Advanced to control bitrate, sample rate and channels.
Press Convert. Everything happens on your own device — nothing is uploaded. Download files one by one, or grab them all as a ZIP.
Privacy, in plain words
What “uploaded” normally means. On most online converters, pressing the button copies your file across the internet onto a computer owned by that website. That copy is what the word “upload” means, and it is the part nobody explains.
What happens instead. This site does not do it. There is no server here that receives files, so your AMR file is read, converted and handed back by the browser you are using right now. It never travels — so there is no copy to store, read, leak or hand over.
Check it yourself in ten seconds
Turn off your Wi-Fi after this page has loaded, then convert a file anyway. It still works, because everything needed is already on your device.
The longer explanation of how this works, and the full detail of what is and is not stored on the privacy page.
An audio file is a conversation. Transcribed by machine — which is cheap now — it becomes searchable text about whoever was speaking. It matters more than it sounds, because of what audio files usually are:
Interviews
a source's voice is identifying even when the name is not said
Voice notes and dictation
thinking out loud, never meant for an audience
Therapy and consultation recordings
clinical material with strict handling rules
Meeting audio
internal discussion, named people, unannounced decisions
A file that is never sent cannot be kept, leaked, subpoenaed or used to train anything. That is a property of how this works, not a promise about how carefully it is run.
AMR is a narrowband speech codec designed for mobile phone calls. It is optimised specifically for the frequency range of the human voice and sounds poor for anything else.
OGG here means Ogg Vorbis, a royalty-free lossy codec that predates Opus. It is competitive with AAC and remains common in games.
The two formats solve different problems, which is why converting between them involves trade-offs rather than a straight upgrade.
| Property | Source | Target |
|---|---|---|
| Compression | Lossy | Lossy |
| Introduced | 1999 | 2000 |
| Browser support | Poor. Convert to MP3 or WAV to use it. | Browsers and Android. Not native on Apple. |
People make this switch when they run into the limits of AMR: always — convert to MP3 or WAV so the recording stays usable. OGG is the better fit when game development or an open-source pipeline.
Both AMR and OGG are lossy, so this is a re-encode: the file is decoded and compressed again. At the default quality setting the difference is very hard to see, but each successive re-encode compounds. If you will need the file again later, keep the AMR original rather than converting back and forth.
Source
Narrowband speech codec from mobile voice recordings.
Target
Open, royalty-free lossy audio.
Good to know
Runs entirely in your browser
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