Drop file here. 150 MB maximum file size.
Audio format designed for telephony in Europe optimized for l' voice recording, as well as a telephone conversation.
An Opus file is an audio file created in Opus format (also known as " Ogg Opus &") that is an audio format with loss developed for Internet streaming. It uses both SILK (used by Skype) and CELT (from Xiph.Org) codecs and supports variable bit rates from 6 kb/s to 510 kb/s.
Access powerful and secure free online GSM tools to convert, view, edit, merge, split, and compare GSM files β all without installing any software. Our tools support the .GSM (Global System for Mobile Audio File) file extension and run smoothly in any modern browser.
Select a tool below to explore features and manage your GSM files directly from your device with ease.
Chose or drag & drop your GSM file, click Convert to OPUS, and download the OPUS file. No registration needed.
Yes, all uploads are encrypted. Your files are auto-deleted after 24 hours.
Yes, our converter retains layout, fonts, and images as accurately as possible.
Fileproinfo converter engine works fast. You can convert GSM to OPUS in a few seconds to couple of minutes for large size files with complex structure.
FileProInfo support manay file formats that allow you to convert GSM to 100s of file formats, without any limit, registration and downloading, 100% free and online GSM converter.
All converters in this list are manually verified & 100% free and working properly, however you must use these apps according to their respective terms & conditions.
This tool and page updated at: 12-Apr-2025
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