Convert AMR to WAV — Free Online Converter
Convert Adaptive Multi-Rate Audio (.amr) to Waveform Audio (.wav) online for free. Fast, secure audio conversion with no watermarks or registration....
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Upload your .amr file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .wav file when it's ready.
About AMR to WAV Conversion
WAV (Waveform Audio File Format) is the uncompressed audio standard on Windows, storing raw PCM data with zero quality loss. Converting AMR to WAV decodes the telephony-compressed voice recording into a completely uncompressed waveform — the most editing-friendly, universally compatible audio format in existence. Every audio application on every operating system can read WAV files without any codec dependency.
Why Convert AMR to WAV?
WAV is the universal input format for audio editing, analysis, and processing. Speech recognition engines, forensic audio tools, noise reduction software, and DAWs all work best with WAV input because there is no decoding step and no codec artifacts to contend with. Converting AMR to WAV is essential when you need to process, analyze, or edit voice recordings with maximum fidelity and tool compatibility.
Common Use Cases
- Feed a voice recording into speech-to-text software that requires WAV input
- Open a phone recording in Audacity for noise reduction and equalization
- Submit voice evidence in WAV format as required by court documentation standards
- Process call recordings through an automated voice analysis pipeline
- Use a voice sample as input for machine learning speech models
How It Works
FFmpeg decodes the AMR audio to 16-bit signed PCM at the source sample rate (8 kHz for AMR-NB, 16 kHz for AMR-WB) and writes it into a WAV (RIFF) container. The output is standard PCM WAV compatible with every audio tool on every platform. No resampling or bit depth conversion is performed unless explicitly requested.
Quality & Performance
WAV output contains the exact PCM samples produced by the AMR decoder — no further quality loss occurs. However, the quality is inherently limited by the AMR source: 8 kHz/13-bit effective for AMR-NB, 16 kHz for AMR-WB. WAV preserves this exactly without adding or removing anything.
Device Compatibility
| Device | AMR | WAV |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No | Native |
Recommended Settings by Platform
Spotify
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Apple Music
Resolution: N/A
Bitrate: 256 kbps
AAC format required
SoundCloud
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Podcast
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
Tips for Best Results
- 1Keep the native sample rate (8/16 kHz) unless the target software specifically requires 44.1 kHz or 48 kHz.
- 216-bit PCM is standard for voice. 24-bit or 32-bit adds file size without benefit for AMR-sourced audio.
- 3For speech recognition, 16 kHz/16-bit mono WAV is the gold standard input format.
- 4Store WAV files alongside the original AMR for documentation of the source encoding.
Related Conversions
AMR to WAV is the essential conversion for anyone who needs to edit, analyze, or process voice recordings in their rawest possible form.