WMA to AMR Converter
Convert Windows Media Audio to AMR mobile speech format online. Optimized for telephony and voice recordings.
Initializing... drag & drop files here
Supports: WMA
Advanced Options - Our defaults are optimized for the best results. We recommend you keeping the defaults unless you have a specific need.
Reset to defaults
Need help?How to Convert WMA to AMR Online
- Upload Your WMA File — Click "Choose Files" or drag and drop your .wma audio. Batch conversion is supported.
- Set Audio Channel (Optional) — AMR is mono-only by default. Keep original or force Mono.
- Set Sample Rate (Optional) — AMR Narrow Band uses 8000 Hz, Wide Band uses 16000 Hz.
- Trim (Optional) — Set a start time and duration in seconds or HH:MM:SS.sss.
- Convert and Download — Click "Convert" and download your AMR file. No sign-up required.
Why Convert WMA to AMR?
WMA is Microsoft's proprietary audio format. AMR (Adaptive Multi-Rate) is a speech-optimized codec developed by 3GPP for mobile telephony. AMR files are 80–90% smaller than WMA while maintaining excellent speech clarity.
Converting WMA to AMR is useful for creating mobile voice recordings, ringtones for legacy phones, or preparing audio for telecom systems that require AMR input. Audio codec defaults to AMR.
Frequently Asked Questions
Is AMR good for music?
No. AMR is optimized for speech only. For music, use WMA to MP3 or WMA to AAC.
Can I batch convert?
Yes. Upload multiple WMA files and download AMR results individually or as a ZIP archive.