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8 Most Helpful Ways to Convert MP3 to OPUS

by Kayla Morrison • 2024-07-03 14:34:00 • Proven solutions

Sometimes, you may need to convert MP3 to OPUS. Although it has a significant file size, OPUS is a royalty-free audio file format with remarkable audio quality, even at low bitrates. However, finding the right MP3 to OPUS converter can turn out to be a challenge. So, this article is going to introduce you to the best audio file conversion apps in 2022.

Part 1. What's an OPUS File?

OPUS is a lossy sound format designed to code speech and, in some cases, general audio. Generally, OPUS offers higher sound quality than standard audio file formats like FLAC, AAC, and MP3. Also, OPUS is a royalty-free audio file format and is mostly used in VoIP apps such as WhatsApp. It's also used in storage and streaming apps that developers even call it the 'Swiss Army Knife' of audio codecs.

Part 2. Free Online MP3 to OPUS Converter You Can't-Miss

As I've said initially, it's paramount to convert MP3 to OPUS if you want to enjoy an excellent sound quality. So without dilly-dallying much, let's dive in and discuss the best free MP3 to OPUS online converters.

1. Convertio

If you have multiple MP3 audio files that you'd like to change to OPUS in batch, use Convertio. Although you'll have to manage the numerous adverts, this tool is simple to use and supports multiple audio formats like OPUS, OGG, AU, MP3, M4A, etc. It doesn't end there, though, because this website can also edit the bitrate, sampling rate, audio channel, adjust volume, and cut audio. Just take note that Convertio supports a maximum of 100MB per day.


  • Simple to use.
  • Multiple customization options.


  • 100MB is the max upload size.

Free Online MP3 to OPUS Converter - Convertio

2. AConvert

AConvert is another popular audio conversion tool that can convert OPUS to MP3, FLAC, WAV, AAC, AU, etc. Like Convertio, AConvert supports batch conversions with 100% original quality. You can also cut, merge, change the audio bitrate, and adjust the sampling rate. Additionally, users can edit PDF, document, image, archive, eBook, and video files. But on the flip side, this app is ad-laden.


  • Multilingual platform.
  • Curt and merge sounds.


  • Ad-laden UI.

Free Online MP3 to OPUS Converter - AConvert

3. Onlineconvertfree

Onlineconvertfree offers its users a free drag-and-drop platform to convert MP3 to OPUS and vice-versa for free. On top of OPUS, you can also convert MP3 to M4R, AMR, OGG, FLAC, and more. Also, converted OPUS files are deleted instantly after 24 hours. Moreover, the platform is SSL encrypted for maximum personal information security.


  • Safe and secure conversion website.
  • Drag-and-drop platform.


  • 200MB maximum upload size.

Free Online MP3 to OPUS Converter - Onlineconvertfree

4. OnlineConvert

OnlineConvert website can easily convert between more than 1000 file formats, including MP3 to OPUS or vice-versa. Although the platform is a little bit cluttered, this app is super easy to navigate and offers multiple customization tools. You can edit MP3 before converting by cutting, changing bitrate, and adjusting the sampling rate. But like most sites here, OnlineConvert is ad-supported.


  • Helpful customization options.
  • Supports batch conversion.


  • Not the fastest app.

Free Online MP3 to OPUS Converter - OnlineConvert

5. Online Converter

If you have an MP3 file less than 200MB, Online Converter is yet another excellent website to convert MP3 to OPUS losslessly. Users can convert MP3 to AMR, OGG, ALAC, FLAC, and more. However, Online Converter doesn't support batch conversions. An even worse, the platform has multiple unnecessary adverts. But overall, it's an excellent free app to use.


  • Compatible with most sound formats.
  • Super-fast conversions.


  • Unnecessary adverts.

Free Online MP3 to OPUS Converter - Online Converter

6. AnyConv

AnyConv is a simple conversion website that is available in more than 20 universal languages. Here, you can choose to drag and drop files on the converter or use the "Choose Files" button to open your local storage. And if you encounter any troubles navigating the site, you can reach out to the 24/7 support.


  • Simple drag-and-drop UI.
  • 24/7 customer support.


  • No sound customization tools.

Free Online MP3 to OPUS Converter - AnyConv

7. is a pretty basic file conversion website that goes about its duties with minimal fuss. While the platform has some adverts, that shouldn't deter you from converting your MP3 files to OPUS easily. The platform is straightforward and is available in English, German, Spanish, and French.


  • Straightforward platform.
  • Supports batch conversions.


  • No customization tools.

Free Online MP3 to OPUS Converter -

8. CoolUtils

Lastly, you can use CoolUtils to convert MP3 to OPUS with original quality. First of all, the platform supports the convenient drag-and-drop feature and is simple to understand. Also, you can change the bitrate, sampling rate, and channel before converting your audio. And lastly, this website offers responsive customer support.


  • Simple to use.
  • Excellent customization options.


  • Ad-laden UI.

Free Online MP3 to OPUS Converter - CoolUtils


Up to this level, I'm sure you can convert MP3 to OPUS quickly and easily. This way, you can enjoy maximum audio compatibility with your VoIP apps and excellent sound quality. Enjoy!

Kayla Morrison

Kayla Morrison

staff Editor

Resource > Audio Solutions > 8 Most Helpful Ways to Convert MP3 to OPUS