Audio to AC3
Free online conversion of FLAC, M4A, MP3, OGG, OPUS, PCM, WAV to AC3
Convert any audio to AC3 online
AC3 (Dolby Digital) is the surround-sound format used in DVDs, home theatre and TV broadcast. It carries up to 5.1 channels in one stream, which is why it is the audio standard for movies. This free tool converts MP3, WAV, M4A, FLAC and more to AC3 in your browser.
Built for home theatre and 5.1
AC3 is designed for multi-channel surround playback on AV receivers and home cinema systems. Converting to AC3 prepares an audio track for DVD authoring, media servers and any setup that expects Dolby Digital, so it plays correctly through a surround system.
Runs in your browser, files stay private
Conversion happens entirely on your device with WebAssembly — nothing is uploaded. No sign-up, no watermark and no file limit, and you can set the bitrate to balance AC3 quality against size.
Frequently asked questions
How do I convert audio to AC3?
Open the tool, drop in your MP3, WAV, M4A or FLAC file, keep AC3 as the output and click convert. The AC3 is produced in your browser and downloads immediately.
Why convert to AC3?
AC3 (Dolby Digital) is the surround-sound standard for DVDs, home theatre and broadcast TV, carrying up to 5.1 channels. Convert to AC3 when you need an audio track that plays correctly through an AV receiver or home cinema system.
Is the audio to AC3 converter free?
Yes, completely free with no sign-up, no watermark and no limit on the number or size of files you convert.
What is AC3 used for?
AC3 is the Dolby Digital audio format used in DVDs, Blu-ray, digital TV and home-theatre systems, where it delivers multi-channel surround sound for movies and shows.
Are my audio files uploaded to a server?
No. All processing runs locally in your browser, so your audio never leaves your device.