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Convert Opus to M4A

Free and instant — your Opus files are processed securely on our servers and deleted right after conversion. Nothing is stored.

How to convert Opus to M4A

  1. Step 01

    Add your Opus files

    Drop them into the box above or click to browse. You can add several files at once.

  2. Step 02

    Conversion starts instantly

    Your file is sent to our servers, converted and deleted right away — no sign-up, no queue, no waiting.

  3. Step 03

    Download your M4A files

    Save each file individually or grab them all at once. Done.

Why convert Opus to M4A?

Convert Opus to M4A quickly and privately — every file is processed on our servers with ffmpeg and deleted immediately afterward, so you get a M4A file that plays wherever M4A is expected.

Opus vs M4A at a glance

Opus is the modern voice and streaming codec behind WhatsApp voice notes and Discord calls — excellent quality at tiny file sizes, but not widely supported by standalone music players or older devices. M4A is AAC audio in an MPEG-4 container — the format used by iTunes and Apple Music, same quality as AAC with slightly better metadata support.

PropertyOpusM4A
Extension.opus.m4a
Full nameOpus Interactive Audio CodecMPEG-4 Audio
First released20122001
Developed byXiph.Org / IETFApple / ISO
CompressionLossyLossy
TransparencyNoNo
AnimationNoNo
Best forvoice messages from WhatsApp, Telegram and Discord, and low-latency streamingmusic purchased or downloaded from Apple services

Opus to M4A — frequently asked questions

Is this Opus to M4A converter really free?

Yes — completely free, with no sign-up, no watermarks and no daily limits.

Will I lose quality converting to M4A?

M4A uses lossy compression, so the image is re-encoded at high quality (92%). For photos the difference is practically invisible; for text-heavy graphics or logos, a lossless format like PNG preserves sharp edges better.

Is the conversion private?

Audio conversion runs on our servers with ffmpeg — your file is deleted immediately and never stored.

Related conversions

Need the reverse? Convert M4A to OpusExplore the M4A converter