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Convert M4A to OPUS

Turn M4A files into OPUS in seconds — free, secure, and no signup required.

Free tier: 5 conversions/day, files up to 50 MB, ad-supported. Need more? See Pro plans →
  • 256-bit SSL encryptionYour files are protected end-to-end
  • Lightning-fast conversionsProcess files in seconds, not minutes
  • All major audio formatsMP3, WAV, AAC, FLAC & more
  • No registration requiredStart instantly — 5 free conversions a day
  • Files auto-deleted in 1 hourGDPR-friendly: we never keep your files
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Max file size 50 MB. Sign up for more

Select several files to convert them in one go.

Recompressing M4A recordings into Opus produces far smaller files using the codec behind Discord, WhatsApp, and modern VoIP audio. Long voice recordings benefit the most, often shrinking severalfold with no audible cost.

Convert M4A to OPUS – Free Online M4A to OPUS Converter

Why convert M4A to OPUS?

  • Shrink long Voice Memos and lecture recordings to a fraction of their size for storage or messaging.
  • Produce clips for Discord soundboards and bots, which operate on Opus internally.
  • Serve audio to bandwidth-limited listeners — Opus keeps speech intelligible even at 24-32 kbps.

Tip: For spoken recordings, 48 kbps Opus is usually plenty; for music, stay at 128 kbps or above — a lossy-to-lossy transcode can only preserve, never improve.

How to convert M4A to OPUS

  1. Upload your M4A file using the area above.
  2. OPUS is preselected as the target format.
  3. Click Start and wait for the conversion to finish.
  4. Download your converted OPUS file.
Convert to OPUS
MP3 to OPUSWAV to OPUSAAC to OPUSFLAC to OPUSOGG to OPUSWMA to OPUS
Convert from OPUS
OPUS to MP3OPUS to WAVOPUS to AACOPUS to FLACOPUS to OGGOPUS to WMA
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M4A to OPUS — Frequently Asked Questions