AMR は携帯電話の音声録音に特化した形式です。非常に小さく、通話品質の音声を効率よく保存します。
Typical use: 通話録音を確認・共有しやすい MP3/WAV に変換します。
About the AMR format
AMR は携帯電話の音声録音に特化した形式です。人の声を最小の容量で残せるため、通話録音やボイスメモに使われます。
音楽用途には音質が足りません。確認や共有には MP3/WAV への変換が便利です。
Strengths
- ✓ ファイルが非常に小さい
- ✓ 録音用途に最適化
Limitations
- ✗ 音域が狭く音楽に不向き
- ✗ ビットレートが低い
- Compression
- Lossy speech codec
- Quality
- Speech only
- Compatibility
- Phone recorders
- Best for
- Voice memos and call recordings
Convert AMR to…
27 direct directions plus 21 workflows, sorted A–Z; 🔥 marks popular targets.
Cross-engine workflows
Frequently asked questions
What is a AMR file?
AMR is the tiny voice-recording format of old Nokia-era phones and answering machines.
How do I convert AMR files online?
Pick a target format from the "Convert AMR to…" list below, drop your file and hit convert. Everything runs in your browser — no install, no upload, no watermark, no limits.
Is it safe to convert AMR files here?
Yes. Every conversion is performed by your own device inside the browser — files never leave for a server, and the page keeps working even offline.
Which formats can AMR convert to?
This page lists all 48 directions across documents, images, audio, video, spreadsheets and archives — each one is its own free converter page.