Thousands of Sonix customers convert their English OPUS files to text 
What's the best way to convert English OPUS files to text? 
Use Sonix to convert English OPUS files to text
Follow these six easy steps to quickly and easily convert your English OPUS files to text:
Step 1: Log into your Sonix account
If you don't have one, you can sign up for Sonix's free account—30 minutes of free transcription/translation.
Step 2: Upload your English OPUS file
In Sonix, click “Upload” and locate the English OPUS file on your computer.
Step 3: Choose language: English
Select English in the dropdown that asks 'What language was spoken?.' Then, click the “Transcribe” button.
Step 4: Sonix transcribes your OPUS file
Sonix automatically transcribes your English OPUS file and converts it to English text.
Step 5: Polish your English transcript
Edit your English transcript by typing directly into your browser to correct any words that were not transcribed perfectly.
Step 6: Export English text
Export the English text to any format you want including MS Word, PDF, subtitles, or a simple text file.
All done! You have now successfully converted your English OPUS file to text!
How to improve the accuracy of your English transcripts?
Start by improving the quality of the English 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 English OPUS file that I upload?
Yes, please do not over-compress or over-filter the audio track of your English 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 English with Sonix:
What customers say about Sonix's automated transcription 
I heard about you from my friend. I found my transcription to be almost exactly what is in the audio file. Love it...continue what you are doing. Sonix is excellent. I appreciate that.
Of all the programs that do this, I found you the best!
Your product is amazing, I love so many features including the video capture on the side, ability to change the transcript as you go, highlighting, downloading audio files... SEARCHING TRANSCRIPTS
I love how accurate the software is! The way you can play audio as you go through the text or click on any part of the text to hear the audio is amazing.
Very cool and fascinating too. Ahh the power of algorithms. I can tell you that I love the overall UI experience because it's pretty, dumbed down, and very easy for me to use. I've done a lot of radio and this service would be invaluable for that kind of work.
Very high quality transcription - very accurate - only took a quick scan/sweep to manually correct/clean up the text.
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Convert English OPUS files to text with Sonix 
Sonix automatically transcribes and translates your audio/video files in 53+ languages. Easily search, edit, and share your media files. Sonix uses advanced transcription and translation algorithms to convert your English OPUS files to text both fast and accurate. Fast, accurate, and affordable. Millions of users from all over the world.
Includes 30 minutes of free transcription