Convert AAC to Opus
Free and instant — your AAC files are processed securely on our servers and deleted right after conversion. Nothing is stored.
How to convert AAC to Opus
- Step 01
Add your AAC files
Drop them into the box above or click to browse. You can add several files at once.
- Step 02
Conversion starts instantly
Your file is sent to our servers, converted and deleted right away — no sign-up, no queue, no waiting.
- Step 03
Download your Opus files
Save each file individually or grab them all at once. Done.
Why convert AAC to Opus?
Convert AAC to Opus quickly and privately — every file is processed on our servers with ffmpeg and deleted immediately afterward, so you get a Opus file that plays wherever Opus is expected.
AAC vs Opus at a glance
AAC is the successor to MP3 — better quality at the same bit rate, used by Apple Music, YouTube and most streaming platforms. 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.
| Property | AAC | Opus |
|---|---|---|
| Extension | .aac, .m4a | .opus |
| Full name | Advanced Audio Coding | Opus Interactive Audio Codec |
| First released | 1997 | 2012 |
| Developed by | ISO/IEC JTC 1 | Xiph.Org / IETF |
| Compression | Lossy | Lossy |
| Transparency | No | No |
| Animation | No | No |
| Best for | music on Apple devices, streaming platforms and YouTube | voice messages from WhatsApp, Telegram and Discord, and low-latency streaming |
AAC to Opus — frequently asked questions
Is this AAC to Opus converter really free?
Yes — completely free, with no sign-up, no watermarks and no daily limits.
Will I lose quality converting to Opus?
Opus 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.
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