Thousands of Sonix customers convert their Spanish MP3 files to text 
What's the best way to convert Spanish MP3 files to text? 
Use Sonix to convert Spanish MP3 files to text
Follow these six easy steps to quickly and easily convert your Spanish MP3 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 Spanish MP3 file
In Sonix, click “Upload” and locate the Spanish MP3 file on your computer.
Step 3: Choose language: Spanish
Select Spanish in the dropdown that asks 'What language was spoken?.' Then, click the “Transcribe” button.
Step 4: Sonix transcribes your MP3 file
Sonix automatically transcribes your Spanish MP3 file and converts it to Spanish text.
Step 5: Polish your Spanish transcript
Edit your Spanish transcript by typing directly into your browser to correct any words that were not transcribed perfectly.
Step 6: Export Spanish text
Export the Spanish text to any format you want including MS Word, PDF, subtitles, or a simple text file.
All done! You have now successfully converted your Spanish MP3 file to text!
How to improve the accuracy of your Spanish transcripts?
Start by improving the quality of the Spanish MP3 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 Spanish MP3 file that I upload?
Yes, please do not over-compress or over-filter the audio track of your Spanish MP3 file. By uploading a high quality version of your audio, we can give you the best level of accuracy.
Aside from MP3, do you support other types of audio/video files?
Yes, we do! You can convert the following file types in Spanish with Sonix:
What customers say about Sonix's automated transcription 
I’m stunned how much easier it makes life. I worked on documentary films and it cost us a fortune to have the interviews transcribed. The idea that this exists is mind-boggling to me.
Sonix transcription service has dramatically reduced the time I need to spend on clients' interviews. Tremendous help!
Your app is amazing. Seriously, I'm blown away by the technology. The speed, accuracy, and the fact that you can play the audio and that it highlights the transcript in sync.
I was amazed at how accurate Sonix is.
Sonix is the best transcription program I have worked with.
I tried several programs and Sonix was by far the best one.It gave me very accurate scripts
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Convert Spanish MP3 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 Spanish MP3 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