opnai / Audio to Text
Audio to Text
Long files can take a few minutes. You can leave this page: if you come back in this browser within 24 hours, we reconnect to your job. Files are deleted automatically after 24 hours and we do not log or train on your content.
Upload a voice note, interview, lecture or meeting recording and get a text transcript you can read, search and copy. The tool recognizes speech in many languages and can detect the language for you.
Transcription runs on our own GPU server. A short recording takes well under a minute; a half-hour file can take a few minutes, and the page shows progress while you wait. Your file is deleted automatically after 24 hours.
How to use Audio to Text
- Drop an audio file onto the box or choose it from your device. MP3, WAV, M4A, OGG, WebM and FLAC are accepted, up to 100 MB and 30 minutes.
- Leave the language on Auto-detect, or pick the language spoken in the recording for a more reliable result.
- Press Transcribe. You will see the upload progress, then the progress of the transcription.
- Read the transcript, press Copy, or download it as a .txt file. Press Delete now if you want the recording removed immediately.
Features
Pick from about twenty common languages or let the tool detect the language automatically.
The transcript appears on the page with a Copy button and a plain-text download.
Upload and processing progress are shown separately, so you know what is happening.
Open the page, add a file and get the text. No sign-up and no watermark.
No content logging, no model training on uploads, automatic deletion after 24 hours.
Getting a better transcript
Recording quality matters more than anything else. Put the microphone close to the speaker, reduce background noise, and avoid several people talking at once. A phone held a few centimetres from the speaker beats a laptop microphone across a room.
If the first result has mistakes, check proper names, numbers and jargon, which are the hardest for any speech recognizer. Always proofread before quoting someone or publishing the text.
Common uses
People transcribe interviews for articles, lectures for study notes, voice memos for later searching, podcasts for show notes, and meetings for minutes. Remember that recording other people may require their consent where you live.
Frequently asked questions
How accurate is the transcript?
On clear speech from a single speaker in a quiet room the result is usually very good. Accuracy drops with strong accents, overlapping voices, background noise, music, poor microphones and specialist vocabulary. Names, numbers and technical terms are the most common mistakes, so read the transcript before you publish or rely on it.
What are the file limits?
Up to 100 MB and up to 30 minutes of audio or video per file. Longer recordings should be split into parts first. The page checks the length in your browser before uploading so you do not wait for a file that would be rejected.
Is my recording private?
Your file is used only to produce the transcript. We do not log what is said, we do not train models on uploads, and the file and result are deleted automatically after 24 hours. You can remove them sooner with the Delete now button.
Which audio formats can I upload?
MP3, WAV, M4A, MP4 audio, OGG, WebM and FLAC. If your recording is in another format, convert it to MP3 or WAV first.
Should I choose a language or use auto-detect?
Auto-detect works well for clear speech in common languages. If the recording is short, noisy or mixes languages, choosing the main language usually gives a better result.
Does it label different speakers?
No. The transcript is one continuous text without speaker names or timestamps. For timestamps, use the Subtitle Generator.