The fastest way to convert M4A files (including iPhone voice memos) into universally compatible MP3. M4A to MP3 runs entirely in your browser with ffmpeg.wasm, so your audio never leaves your device. Pick a file, choose a bitrate, and download the MP3 in seconds.
Your data is processed entirely in your browser. Nothing is uploaded to any server.
Yes, all audio tools on Offline ToolHub are free.
No. Audio is processed locally in your browser with Web Audio and ffmpeg.wasm.
MP3, WAV, M4A, OGG and FLAC, depending on the tool.
No signup required.