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AMR is a compressed audio format optimized for speech and voice recordings. It was developed for GSM mobile phones and is commonly used in voice memos and call recordings. While not ideal for music, AMR is perfect for storing spoken audio in small file sizes.
M4A is an audio file format based on the MPEG-4 standard. It typically uses AAC or ALAC codecs for high-quality sound. M4A is widely supported by Apple devices and offers better compression and quality than MP3 at similar bitrates.
Convert your .amr files to .m4a right in your browser — no downloads, no installs. Everything happens securely in the cloud.
We never store your files permanently. Only you can access them, and they’re automatically deleted from our servers within 2 hours.
Turn your AMR files into M4A in just a couple of clicks. No registration, no limits — and it’s 100% free.