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Convert.mp3 · .wav · .m4a · .ogg

Convert audio to AAC online

100% localFiles never leave your device — no upload, no account, no tracking.
About Audio to AAC

Convert audio into AAC, the efficient codec used across Apple devices and streaming. Drop in an MP3, WAV, M4A, OGG, or FLAC, pick a bitrate, and we encode AAC locally with ffmpeg.wasm.

The conversion runs entirely in your browser. Your audio never leaves your device.

How it works
  1. 01

    Add an audio file

    Drop your audio file onto the page or pick it from your device.

  2. 02

    Set bitrate

    Choose a bitrate to balance size against quality.

  3. 03

    Convert

    Click Convert to encode AAC locally with ffmpeg.wasm.

  4. 04

    Download

    Save the AAC file.

Features
efficient codecadjustable bitratebroad compatibility
Frequently asked
How does the Audio to AAC converter work?
Convert audio into AAC, the efficient codec used across Apple devices and streaming. Drop in an MP3, WAV, M4A, OGG, or FLAC, pick a bitrate, and we encode AAC locally with ffmpeg.wasm.
Are my files uploaded to a server?
No. Everything runs entirely in your browser using local JavaScript and WebAssembly. Your files never leave your device.
Does it cost anything or require an account?
No. The converter is free, needs no sign-up, and runs locally in your browser.
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