How to convert AMR to MP3
- 1
Upload your file
Drag and drop a file or click to select one. Keep this page open while the file uploads and converts.
- 2
Convert AMR to MP3
NexMedia converts AMR to MP3 on its own servers. Processing time depends on the file size and how busy the queue is.
- 3
Download the converted file
When the conversion finishes, the download appears on this page. Your converted file is kept for 2 hours, then deleted.
About AMR
AMR (Adaptive Multi-Rate) is a speech codec designed for mobile networks; its narrow-band form codes voice at 4.75 to 12.2 kbit/s.
Voice notes and call recordings from older phones and dictation apps.
AMR keeps only the frequency range of speech, so music in an AMR file sounds poor, and converting it cannot bring the missing range back.
Convert AMR to MP3 online free, no account required — MP3 is a universally supported lossy audio format.
Change AMR to MP3 without losing quality — convert AMR to MP3 free in your browser.
Why do my recorded calls sound so tinny and robotic? AMR was designed to squeeze narrow-band speech over 2G networks, so it discards almost everything but the voice — no conversion can restore the missing range.
About MP3
MP3 (MPEG-1 Audio Layer III) is a lossy audio format from the early 1990s. It removes the sound listeners are least likely to notice, typically at 128 to 320 kbit/s.
It plays on virtually every device and app, which makes it the default for music files, podcasts and audiobooks.
MP3 tops out at 320 kbit/s and two channels, and every re-encode removes a little more detail.
Why convert music to MP3? Every device, car stereo and app made in the last 25 years plays it, so nothing and nobody is left out.
What changes when you convert AMR to MP3
- The audio is decoded and re-encoded as MP3 at the default settings, so the result is close to the AMR but not bit-identical.
- AMR and MP3 are both lossy formats, so this conversion adds a second round of lossy compression; keep the original AMR if you may need the best quality later.
Settings you can change
Before you convert AMR to MP3, you can adjust: Audio codec, Rate control, Audio bitrate, Quality (VBR), Sample rate, Channels, Normalize loudness, Trim start, Trim duration, and Keep tags.
Limits
Each plan sets a maximum file size and a number of conversions per day, and video and audio files also have a maximum length. Guests can convert files up to 100 megabytes and 5 per day; a free account raises this to 500 megabytes and 25 per day; paid plans go up to 100 gigabytes.
Your converted MP3 file is kept for 2 hours, then deleted.
AMR to MP3: questions and answers
Does converting AMR to MP3 reduce quality?
The audio is decoded and re-encoded as MP3 at the default settings, so the result is close to the AMR but not bit-identical. AMR and MP3 are both lossy formats, so this conversion adds a second round of lossy compression; keep the original AMR if you may need the best quality later.
What is the difference between AMR and MP3?
AMR is a narrow-band speech codec from mobile phones. MP3 is a universally supported lossy audio format.
Can I change the settings when converting AMR to MP3?
Before you convert AMR to MP3, you can adjust: Audio codec, Rate control, Audio bitrate, Quality (VBR), Sample rate, Channels, Normalize loudness, Trim start, Trim duration, and Keep tags.
Do I need an account to convert AMR to MP3?
No. You can convert AMR to MP3 without an account; signing in raises the file-size and daily limits.
How long is my converted MP3 file kept?
The MP3 file you convert from AMR is kept for 2 hours, then deleted automatically.
My AMR is already lossy — does the MP3 lose even more?
AMR and MP3 are both lossy formats, so this conversion adds a second round of lossy compression; keep the original AMR if you may need the best quality later.
When I convert AMR to MP3, is the audio re-encoded?
The audio is decoded and re-encoded as MP3 at the default settings, so the result is close to the AMR but not bit-identical.