How do I convert Opus to AC3?

Drop your Opus file onto the converter above, make sure AC3 is selected, and click Convert. When it's done, download the AC3 file — it usually takes a few seconds.

Is it safe to convert Opus to AC3 here?

Yes. Opus to AC3 conversion happens entirely inside your browser using WebAssembly, so your file is never uploaded to any server.

Is the Opus to AC3 converter free?

Yes — free with no watermark. Signed-out visitors can convert 25 files a day, and a free account raises that to 250.

Will converting Opus to AC3 reduce quality?

AC3 is a lossy format, but our defaults are tuned to be visually indistinguishable for most files. You can raise the quality under Options.

Can I convert multiple Opus files at once?

Yes. Add up to 5 files at a time without an account, 10 with a free account and up to 500 on paid plans, then download them individually or as a single ZIP.

Can I convert AC3 back to Opus?

Yes — use our AC3 to Opus converter. Note that converting back and forth between formats can't recover detail lost to lossy compression.

AC3→Opus Opus→MP3 MP3→AC3 Opus→WAV MP4→AC3 Opus→M4A WAV→AC3 Opus→FLAC MOV→AC3 Opus→AAC M4A→AC3 Opus→OGG Opus→WMA Opus→AIFF Opus→AMR Opus→M4B Opus→MP2 Opus→WEBA Opus→OGA Opus→MKA Opus→WV Opus→AU Opus→TTA WebM→AC3 FLAC→AC3 MKV→AC3 AAC→AC3 AVI→AC3 OGG→AC3 WMV→AC3 WMA→AC3 FLV→AC3 M4V→AC3 MPEG→AC3 3GP→AC3 AIFF→AC3 AMR→AC3 MPG→AC3 TS→AC3 M4B→AC3 MTS→AC3 VOB→AC3 PNG→JPG JPG→PNG PNG→WebP JPG→WebP WebP→PNG WebP→JPG HEIC→PNG HEIC→JPG MP4→MP3 PNG→JPEG JPG→JPEG JPEG→PNG JPEG→JPG PNG→PDF JPG→PDF PDF→PNG PDF→JPG HEIC→WebP MP4→WebP PDF→DOCX DOCX→PDF JPEG→WebP WebP→JPEG PNG→GIF JPG→GIF GIF→PNG GIF→JPG MP4→MOV MOV→MP4 WebP→PDF HEIC→JPEG WebP→GIF GIF→WebP HEIC→PDF MP3→WAV WAV→MP3 JPEG→PDF PDF→JPEG SVG→PNG SVG→JPG HEIC→GIF MOV→MP3 MP4→GIF GIF→MP4 JPEG→GIF GIF→JPEG PNG→AVIF JPG→AVIF AVIF→PNG AVIF→JPG MP3→M4A M4A→MP3 GIF→PDF SVG→PDF PNG→SVG JPG→SVG PDF→SVG SVG→WebP MOV→WebP MP4→WAV MP4→WebM WebM→MP4 WebP→AVIF AVIF→WebP WebP→SVG SVG→JPEG MP4→MKV MKV→MP4 HEIC→AVIF MP4→M4A JPEG→AVIF AVIF→JPEG JPEG→SVG MOV→GIF GIF→MOV WebM→MP3 AVIF→PDF MP3→FLAC FLAC→MP3 MP4→AVI AVI→MP4 MKV→MP3 GIF→AVIF AVIF→GIF SVG→GIF GIF→SVG WebM→WebP MOV→WAV XLSX→PDF CSV→PDF EPUB→PDF PDF→EPUB MOV→WebM WebM→MOV MKV→WebP PNG→ICO JPG→ICO ICO→PNG ICO→JPG MP3→AAC WAV→M4A AAC→MP3 M4A→WAV MP4→FLAC AVI→MP3 MOV→MKV MKV→MOV MOV→M4A DOCX→EPUB EPUB→DOCX CSV→DOCX PDF→TXT DOC→PDF TXT→PDF WebP→ICO ICO→WebP PPTX→PDF AVI→WebP

OpusAC3

Convert Opus to AC3

Free, fast and private. Your Opus files are converted right in your browser — nothing is uploaded.

Runs in your browser
No watermark
Batch & ZIP download

Need a smaller Opus? Compress Opus

How to convert Opus to AC3

1
Add your Opus files
Drag and drop Opus files onto the converter, paste them, or click to browse. You can add several at once.
2
Choose AC3
AC3 is already selected. Open Options if you want to change quality, size or metadata.
3
Convert
Click Convert. Your files are converted right in your browser in seconds.
4
Download your AC3
Download each AC3 file, or everything at once as a ZIP.

Opus vs AC3

From

Opus · Opus Audio

Opus is a modern open codec that beats MP3 and AAC at every bitrate and excels at speech. WhatsApp voice notes use it.

Type: Audio
Extension: .opus
MIME: audio/opus
Best for: voice messages, VoIP and efficient music streaming

Lossy compressionOpen standard

All Opus conversions →

AC3 · Dolby Digital

AC3 (Dolby Digital) is the surround-sound audio format used on DVDs, Blu-rays and TV broadcasts.

Type: Audio
Extension: .ac3
MIME: audio/ac3
Best for: 5.1 surround soundtracks

Lossy compression

All AC3 conversions →

Need it the other way around? Convert AC3 to Opus.

Opus to AC3: frequently asked questions

Free, private and in your browser