How do I convert Opus to M4A?

Drop your Opus file onto the converter above, make sure M4A is selected, and click Convert. When it's done, download the M4A file — it usually takes a few seconds.

Is it safe to convert Opus to M4A here?

Yes. Opus to M4A conversion happens entirely inside your browser using WebAssembly, so your file is never uploaded to any server.

Is the Opus to M4A 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 M4A reduce quality?

M4A 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 M4A back to Opus?

Yes — use our M4A to Opus converter. Note that converting back and forth between formats can't recover detail lost to lossy compression.

M4A→Opus Opus→MP3 MP3→M4A Opus→WAV MP4→M4A WAV→M4A Opus→FLAC MOV→M4A Opus→AAC WebM→M4A Opus→OGG FLAC→M4A Opus→WMA Opus→AIFF Opus→AMR Opus→M4B Opus→AC3 Opus→MP2 Opus→WEBA Opus→OGA Opus→MKA Opus→WV Opus→AU Opus→TTA MKV→M4A AAC→M4A AVI→M4A OGG→M4A WMV→M4A WMA→M4A M4V→M4A 3GP→M4A FLV→M4A MPEG→M4A AIFF→M4A AMR→M4A TS→M4A MPG→M4A M4B→M4A MTS→M4A VOB→M4A M2TS→M4A 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 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 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 AAC→MP3 M4A→WAV MP4→FLAC AVI→MP3 MOV→MKV MKV→MOV DOCX→EPUB EPUB→DOCX CSV→DOCX PDF→TXT DOC→PDF TXT→PDF WebP→ICO ICO→WebP PPTX→PDF AVI→WebP WebM→GIF GIF→WebM SVG→AVIF MOV→AVI

OpusM4A

Convert Opus to M4A

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 M4A

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 M4A
M4A 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 M4A
Download each M4A file, or everything at once as a ZIP.

Opus vs M4A

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 →

M4A · MPEG-4 Audio

M4A is an audio-only MP4 file, usually containing AAC (or lossless ALAC). It's Apple Music's and Voice Memos' default format.

Type: Audio
Extension: .m4a
MIME: audio/mp4
Best for: iTunes/Apple Music libraries and voice memos

Lossy compression

All M4A conversions →

Need it the other way around? Convert M4A to Opus.

Opus to M4A: frequently asked questions

Free, private and in your browser