M4A file info

Upload an M4A file and inspect its technical details — codec, bitrate, sample rate, channels, and duration.

Your file never leaves your device. All processing happens right in your browser, and nothing is uploaded to a server.

What kind of M4A is it?

M4A files vary more than they look: AAC at assorted bitrates, voice memos at speech settings, even lossless ALAC. The inspector reads the codec and numbers so you know which one you have before converting or sharing.

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