Convert AAC to OPUS in bulk.
Large AAC files are supported.

Convert AAC Learn more about AAC files to

Video
AAC to 3G2 Select 3G2 as the output format AAC to 3GP Select 3GP as the output format AAC to AMV Select AMV as the output format AAC to AVI Select AVI as the output format AAC to FLV Select FLV as the output format AAC to MKV Select MKV as the output format AAC to MOV Select MOV as the output format AAC to MP4 Select MP4 as the output format AAC to MPG Select MPG as the output format AAC to MXF Select MXF as the output format AAC to OGG Select OGG as the output format AAC to VOB Select VOB as the output format AAC to WebM Select WebM as the output format AAC to WMV Select WMV as the output format
Audio
AAC to AC3 Select AC3 as the output format AAC to AIFF Select AIFF as the output format AAC to FLAC Select FLAC as the output format AAC to M4A Select M4A as the output format AAC to MP3 Select MP3 as the output format AAC to OPUS Select OPUS as the output format AAC to WAV Select WAV as the output format AAC to WMA Select WMA as the output format


How to convert AAC to OPUS?

You can convert AAC to OPUS with MConverter in three easy steps:
  1. Choose AAC files from your device or cloud storage
    At the top of this page, drag and drop your AACs.

    Alternatively, click on the Browse box to select files with your device's file picker, or copy and paste an AAC file by pressing Ctrl+V (or ⌘+V on Mac).

    MConverter can easily import AACs from Google Drive, OneDrive, and Dropbox.

    Converting a folder with AAC files to OPUS is also supported: simply paste, drag and drop it, or use the ADD FOLDER button.
  2. Click or tap on OPUS from the list of target formats
    You could also use the search box at the top right to quickly find the format you need, whether it's OPUS or something else.
  3. Get your OPUS files after MConverter has finished processing them
    Click on DOWNLOAD ALL to save your OPUSs to your default downloads folder, or select SAVE TO to choose another location.

    You can also configure automatic file downloads during the conversion process or in the settings menu. When enabled, each OPUS file is downloaded as soon as its conversion is complete, without waiting for the others to finish.

    If supported by your device, you'll see a Share icon, allowing you to directly send converted files to other apps.

About the formats

File extension .aac
Category Audio file formats
Developed by Fraunhofer Institute, Nokia, Dolby, AT&T, Sony and others
Mime type audio/aac

Format description

AAC files are audio files using Advanced Audio Coding compression. AAC is a lossy format, meaning the audio quality remains almost the same as the original source. The slight loss leads to the audio files taking up less space, which makes them ideal for music streaming or when bandwidth is limited. AAC is superior to MP3 for handling frequencies above 16 kHz. The encoding efficiency for transient and stationary signals is also better when compared to MP3.
File extension .opus
Category Audio file formats
Developed by Xiph.Org Foundation
Mime type audio/ogg

Format description

OPUS files contain audio in the lossy Opus format. It was developed for online streaming and supports variable bitrates. Similarly to MP3, which is also lossy, OPUS files do not contain an exact copy of the original audio recording. This is done to take up less space.



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Sep 25, 2025
I love that I can just convert my files from File Explorer, no need opening the app first, just right click and "open with" or the "Share" button and choose "MConverter" immediately or drag the file to MConverter home screen if I'm in a rush. Even though it's a web wrapper, it still serves a distinct purpose, compared to other website converters.
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What I appreciate most is how user-friendly it is. It handles just about any file conversion I throw at it, quickly and efficiently. It's become an indispensable tool in my daily workflow. The fact that it supports so many formats is a huge plus, and it's saved me a lot of time and hassle. It's a solid, reliable tool, and I'd definitely recommend it to anyone who needs to convert files regularly.
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Excellent tool, it does exactly what it says it will do. It does it really quick. No fuss, just upload your file in the web interface, select the output and the download of your formatted file begins almost immediately. Super fast !
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I tried several programs to convert AI files to PNG, but only this program managed to convert both the text and the image exactly as in the original. The other programs transformed the text using their own fonts, which were not the ones originally used.
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Apr 18, 2025
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An exceptional product, with a fantastic, simple, immediate effective UX. A spatial combination of which format can be converted to which other format. A fast and flawless execution, with a very high quality of the output that maintains practically all the characteristics of the original document.
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What truly sets MConverter apart is its Swiss Army knife-type functionality. This tool can convert anything to anything with just a click of a button. It doesn't matter whether you're working with audio, video, documents, images, or any other file type - MConverter has got you covered.
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Finally found a converter that did webp to gif without killing the animation. I tried around 12ish different converters and this is the only one that works so far. Hats off to you dev, thank you.
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Although there are occasional errors, I was very impressed with the efforts of the developers to receive feedback from users and to improve the inconveniences quickly. I will be using it more often in the future.
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Apr 28, 2022
I grab the webm I want to move to my phone and drag it over to the app, I click the type of file I want the webm converted to (mp4), it does it in 10 seconds. easiest 5/5 of my life.

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