AMR to MP3 Converter
Convert AMR (Adaptive Multi-Rate) voice messages to MP3 format for universal compatibility. Perfect for WhatsApp and Telegram voice messages, voicemail recordings, and speech files. Professional-quality audio conversion powered by FFmpeg, all processing happens securely in your browser.
Recommended Settings
For Voice Messages
- •128 kbps CBR for excellent voice clarity
- •VBR Quality 6 for efficient file sizes
- •Optimized for WhatsApp/Telegram conversions
For Voicemail Archiving
- •96-128 kbps CBR recommended
- •Good quality with reasonable file size
- •Perfect for long-term storage
Pro Tips
- •AMR is telephony-grade (8kHz mono) - high bitrates won't improve quality
- •VBR Quality 6 provides excellent results for speech
- •Output quality is limited by the 8kHz source bandwidth
Most Popular
Most users choose VBR Quality 6 or 128 kbps CBR for excellent voice quality
When to Use This Tool
Convert WhatsApp, Telegram, and other voice message recordings from AMR to universally compatible MP3.
Recommended: 128 kbps CBR
Archive voicemail recordings in MP3 format for long-term storage and easy playback on any device.
Recommended: 96-128 kbps CBR
Convert telephony-quality speech recordings to MP3 for sharing, editing, or transcription purposes.
Recommended: VBR Quality 6
How It Works
Upload your AMR voice message file
Select CBR or VBR encoding mode
Choose desired bitrate or quality level
FFmpeg processes MP3 encoding
Download your converted MP3 file
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by FFmpeg.wasm (WebAssembly) for optimal performance on modern browsers.
Open Source
Built with verified, open-source libraries. Fully transparent.
Frequently Asked Questions
What is AMR format?
AMR (Adaptive Multi-Rate) is a telephony-grade audio codec optimized for speech encoding. It's commonly used in mobile voice messages (WhatsApp, Telegram) and voicemail systems. AMR is typically mono, 8kHz, designed for voice, not music.
What is the difference between CBR and VBR?
CBR (Constant Bitrate) maintains the same bitrate throughout, resulting in predictable file sizes. VBR (Variable Bitrate) adjusts the bitrate based on audio complexity, often providing better quality at smaller file sizes for speech content.
Which mode should I use?
For voice messages and speech, VBR quality 6 provides excellent results with smaller file sizes. Use CBR 96-128 kbps for predictable file sizes or compatibility requirements.
What bitrate is recommended for voice?
128 kbps CBR or VBR quality 6 provides excellent quality for speech. Since AMR is telephony-grade (8kHz mono), higher bitrates like 192 kbps won't improve quality significantly as the source is bandwidth-limited.
Why are high bitrates not recommended?
AMR is a telephony-quality format (8kHz sample rate, mono) designed for voice, not music. Using bitrates above 128 kbps won't improve quality as the source audio lacks the frequency range to benefit from higher bitrates.