Latest update
- Added M4A audio output and improved AAC conversion.
- Added Serbian speech recognition and subtitle support.
- The site is now available in English, Russian, Spanish, German, French and Serbian.
Free AI speech to text and audio converter online
Turn audio and video recordings into text, create SRT subtitles, convert media files to any popular audio format and extract the soundtrack from a video. Everything works in your browser — no installation and no account.
Our tools
Video to text
Get a transcript of an MP4 or AVI video: lectures, webinars, interviews, calls.
Learn more
Telegram bot for speech recognition
Send a voice message, audio or video file to @ai_recognizer_bot and get the text right inside Telegram.
Deep speech analyzer
Detailed analysis of speech and meaning. Check our plans and tell us what you need.
Popular conversions: MP3 to text · M4A to text · Voice message to text
How to transcribe audio or video to text in 4 steps
- Open the speech-to-text tool.
- Select the language spoken in the recording: English, Russian, Spanish, German, French or Serbian.
- Upload an AVI, MP4, WAV, MP3, FLAC, AAC, M4A or OGG file.
- Download the transcript as a text file — with optional timestamps — or as an SRT subtitle file.
Languages and formats
Speech recognition: English, Russian, Spanish, German, French and Serbian. The result can be translated into English, German, Spanish, Turkish, Arabic, Russian or Portuguese. Input files: AVI, MP4, WAV, MP3, FLAC, AAC, M4A, OGG. Audio output: WAV, MP3, FLAC, AAC, M4A, OGG.
Frequently asked questions
What is AI Recognizer?
AI Recognizer is a free online service that transcribes speech from audio and video files into text, generates SRT subtitles, converts media files between audio formats and separates the audio track from a video.
Is AI Recognizer free?
Yes. All tools are free and require no registration. The project is supported by voluntary donations.
Which languages are supported?
Speech recognition works for English, Russian, Spanish, German, French and Serbian. The transcript can additionally be translated into English, German, Spanish, Turkish, Arabic, Russian or Portuguese.
Which file formats can I upload?
AVI, MP4, WAV, MP3, FLAC, AAC, M4A and OGG.
Do I need to install anything?
No. AI Recognizer runs in the browser on desktop and mobile. There is also a Telegram bot, @ai_recognizer_bot.
What happens to my files?
Files are used only to produce your result and are automatically deleted from the server shortly after processing. We do not ask for an account or personal data.
Support the project
AI Recognizer is free and has no sponsors, while speech recognition servers cost money. If the service helps you, please consider a donation. You can also view our upcoming plans and leave feedback.
