Free online OPUS to TXT converter

Source format: Opus

Opus is a modern audio codec and file format commonly stored in .opus files, often inside an Ogg container. It is widely used for voice recordings, podcasts, messaging apps, VoIP, and streaming audio because it offers excellent sound quality at low bitrates and handles speech very efficiently. Opus is supported by many media players and recording tools, but it is still an audio-only format, so it cannot be opened as readable text.

Target format: Txt

TXT is a plain text format that stores unformatted text only. It is universally compatible and can be opened by almost any text editor on any operating system. TXT is useful for notes, logs, transcripts, captions, and extracted speech text. However, a TXT file cannot preserve audio, timing, speaker identity, or formatting unless those details are written into the text manually.

How to perform the conversion

Converting .opus to .txt is not a direct format transformation, because audio does not contain text by itself. In practice, this means you usually need speech-to-text transcription rather than a simple file conversion.

1. Check whether the Opus file contains spoken audio. If it is music or background audio, there may be little or no useful text to extract.
2. Use transcription software to convert speech into text. Good desktop options include Whisper, Vosk, Audacity with transcription workflows, or media tools that support speech recognition.
3. Open or import the Opus file in the transcription tool.
4. Run speech recognition and review the generated transcript for errors.
5. Save or export the result as .txt. In many editors or transcription apps, this is done through File → Save As or File → Export.

If you want a simple local workflow with Whisper, you can first convert or process the audio with a transcription tool and then save the recognized speech as a text file named transcript.txt. If you prefer a no-install option, you can convert the file on 101convert.com for free without installing any software, provided the site offers an Opus-to-text transcription workflow for your file.

Notes on quality and limitations

This conversion depends on audio recognition quality, not on file format compatibility. Results are affected by background noise, accents, overlapping speakers, audio quality, and language support. Short clips with clear speech usually transcribe well, while music, low-volume speech, or noisy recordings may produce inaccurate text.

Also, a TXT file is only the transcript. It will not include the original audio, timestamps, speaker labels, or formatting unless the transcription tool adds them. If you need captions or timed subtitles, a subtitle format such as .srt or .vtt may be more appropriate than .txt.