Audio to AAC
Convert audio to AAC with bitrate control.
Add audio
MP3, WAV, M4A, OGG, FLAC, OPUS — or a video to pull audio from.
Choose an output
Convert audio to AAC with bitrate control.
Fine-tune
Optional — sensible defaults are already set.
About Audio to AAC
AAC is the lossy codec behind iTunes, YouTube audio and most Bluetooth streaming on Apple devices, and it gives better quality than MP3 at the same bitrate. This tool encodes your file as a raw AAC stream (.aac) at the bitrate you choose.
When it helps
- Supplying audio to a video tool, streaming encoder or device that specifically asks for .aac
- Producing compact, good-quality files for phones and Bluetooth speakers
- Converting WAV recordings into a smaller format that still holds up well for music
Tips
- 128 kbps AAC is a solid default for music on phones; use 192 kbps or higher for critical listening.
- A raw .aac file has no container index, so some players seek slowly or show no duration. Use Audio to M4A if the file is for Apple Music or general playback.
- Converting from MP3 or Opus stacks lossy encoders. Use a bitrate at least as high as the source.
Good to know
Quick answers about audio to aac in your browser.
Both hold the same AAC audio. Choose M4A for music libraries and Apple apps, and plain .aac only when a tool specifically requires a raw AAC stream.
Generally yes at equal bitrates, particularly at 128 kbps and below, where AAC keeps cymbals and vocals cleaner.
Yes. There is no sign-up, no watermark and no limit on how many files you process.
No. Files are read and processed locally in your browser, so they never leave your device.