Accurately convert
Finnish OPUS files to text
Sonix automatically transcribes your Finnish OPUS files to text in minutes. Access industry-leading artificial intelligence and the days of manually transcribing your Finnish OPUS files are long gone. Finnish speech to text: Sonix has been independently reviewed the most accurate Finnish automated transcription, translation, and subtitling platform.
Free to start — no credit card required.
Thousands of Sonix customers convert their Finnish OPUS files to text











Use Sonix to quickly convert
Finnish OPUS files to text
- 1Log into your Sonix account~30 sec
If you don't have one, you can sign up for Sonix's free account — Your free trial includes 30 minutes of transcription and translation.
- 2Upload your Finnish OPUS file~1 min
Click “Upload” and locate the Finnish OPUS file on your computer.
- 3Choose language: Finnish~10 sec
Select Finnish as the language spoken, then click “Transcribe”.
- 4Sonix transcribes your OPUS file~5 min
Sonix transcribes your Finnish OPUS file and converts it to Finnish text.
- 5Polish your Finnish transcript~2 min
Edit your Finnish transcript directly in the browser to correct any misheard words.
- 6Export Finnish text~10 sec
Export the Finnish text to MS Word, PDF, subtitles, or plain text.
Understanding Finnish OPUS files
Finnish has two broad dialect groups, Western and Eastern, but the bigger factor for speech recognition is the gap between standard written Finnish (yleiskieli) and everyday spoken Finnish (puhekieli), which shortens words and pronouns. Casual conversational recordings sound noticeably different from scripted broadcast or lecture speech.
OPUS technical specifications
- Codec
- Opus (SILK + CELT)
- Container
- Ogg
- Typical bitrate
- 6–510 kbps (VBR)
- Sample rate
- 8–48 kHz
- Compression
- Lossy
Finnish at a glance
- Speakers
- ~5.5 million speakers worldwide
- Writing system
- Latin alphabet (with ä and ö)
- Say hello
- Hei!
Frequently asked questions
How to improve the accuracy of your Finnish transcripts?
Start by improving the quality of the Finnish OPUS file that you upload to Sonix. Please use high quality recording equipment, recording in a quiet environment, and ensure that your speakers are speaking clearly to ensure that your transcript is as accurate as possible.
Any advice for the Finnish OPUS file that I upload?
Yes, please do not over-compress or over-filter the audio track of your Finnish OPUS file. By uploading a high quality version of your audio, we can give you the best level of accuracy.
Aside from OPUS, do you support other types of audio/video files?
Yes, we do! You can convert the following file types in Finnish with Sonix:
Why won't my OPUS file play on my computer?
Older media players and some built-in OS players lack Opus support. Opening the file in VLC or a modern web browser, or converting it to MP3 or WAV, usually resolves the issue.
Are WhatsApp voice messages OPUS files?
Yes, WhatsApp exports voice notes as .opus files. You can upload them for transcription directly without converting them first.
Can Sonix transcribe colloquial spoken Finnish (puhekieli)?
Yes. Sonix transcribes the words as they are spoken, so casual recordings come back in colloquial forms, and you can standardize the spelling in the built-in editor before exporting.
Does Finnish transcription handle long compound words?
Finnish builds long compound and inflected word forms, and Sonix transcribes them as complete words. Any misrecognized rare compounds or proper nouns can be corrected in the editor.
Can Sonix create Finnish subtitles from a video?
Yes. Upload a Finnish video, transcribe it, and export the transcript as SRT or VTT subtitle files that work with most media players and video editing tools.
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