Free AI Audio & Video
Transcription to Text
Accurate transcripts from MP3, MP4, WAV and more. No account required.
Drop audio or video here
MP3, MP4, WAV, M4A, OGG, WEBM, FLAC
How it works
Drop a file, get a timestamped transcript, then summarize, translate or export it. Click the tabs below: this is the workspace you get after the upload.
- 00:00
- Today we are looking at how to record research interviews so that the transcript is actually usable.
- 00:12
- First rule: put the recorder close to the person speaking, not in the middle of the table.
- 00:27
- A quiet room matters more than an expensive microphone. Background noise is what breaks a transcript.
- 00:41
- Say the date and the participant code at the start of every recording. It makes the file easy to find later.
- 00:55
- And keep each session under an hour. Long recordings are harder to check and to quote from.
Illustrative sample. Real transcripts have no speaker labels.
Transcribe any format, for any job
Each page explains the limits and tips for that file type or job.
MP3 to text
The most common audio format, any bitrate.
MP3 transcription →MP4Video to text
MP4, MOV and WEBM. We use the audio track.
Video transcription →WAVWAV to text
Uncompressed audio. Big files may need compressing first.
WAV transcription →SRTSubtitles (SRT)
Timestamped captions for YouTube and video editors.
SRT generator →PODPodcasts
Show notes and quotes from an episode.
Podcast transcription →MTGMeetings
Zoom, Google Meet and Teams recordings, with a summary.
Meeting transcription →EDULectures
Searchable notes from long classes.
Lecture transcription →M4AVoice memos
iPhone and Android memos, M4A included.
Voice memo transcription →What happens to your file
Facts, not slogans.
Your file
Goes to temporary storage and is deleted once the transcript is ready. Leftovers are removed within about two hours.
Your transcript
Guests: not saved on our servers. Signed in: kept in your History for 7 days, then deleted.
Speech model
Whisper large-v3 via Groq. Backup providers take over if Groq is down.
AI tools
Summary, translation and chat use GPT-4o-mini on the transcript text, not on your audio.
What you get for free
No credit card. A free account only raises the limits and adds a few tools.
| Guest | Free account | |
|---|---|---|
| Per file | 25 MB, 30 min | 180 MB, 180 min* |
| Transcriptions | 3 every 24 hours | 7 every 24 hours, up to 5 an hour |
| Several files at once | One at a time | Up to 3 |
| Transcript, timestamps, editor | ✓ | ✓ |
| AI summary and translation (36 languages) | ✓ | ✓ |
| Export TXT and SRT | ✓ | ✓ |
| Chat with your transcript | - | ✓ |
| Export DOCX, PDF, VTT, JSON | - | ✓ |
| History | Not saved | 7 days |
* Files over 60 MB are split into parts automatically; each part counts as one of your daily transcriptions, up to 3 per file. Limits are a rolling 24-hour window.
Frequently asked questions
Is Mictoo really free?
Yes. Without an account you can transcribe 3 files every 24 hours, up to 25 MB and 30 minutes each, and use AI summary, translation and TXT or SRT export. A free account raises that to 7 files every 24 hours, up to 180 MB and 180 minutes each, and adds chat with your transcript, a 7-day history and DOCX, PDF, VTT and JSON export. No credit card at any point.
Why is my file in a queue?
Mictoo is free, and the transcription capacity we get each day is finite. Most of the time your file starts immediately. When the day’s budget runs out, new files wait in a queue rather than fail. You keep your place, and the page shows your position and an estimated wait. Signing in does not skip the queue, it raises your file size and length limits.
How long are my files and transcripts kept?
Your audio file goes to temporary storage and is deleted once the transcript is ready. Anything left behind is removed within about two hours. Guest transcripts are not saved on our servers. If you are signed in, your transcripts stay in your History for 7 days and are then deleted automatically.
My file is too big or too long. What can I do?
Guests can upload up to 25 MB and 30 minutes per file, a free account up to 180 MB and 180 minutes. Files over 60 MB are split into parts automatically, and each part counts as one of your daily transcriptions. If a file is still over the limit, save it as a lower-bitrate MP3 or keep only the audio track, or split a long recording into parts. Both guides are linked right under the upload box.
Which languages does it support?
Leave the language on auto-detect, or pick one of 36 languages from the list if the recording is short or mixes languages. Translation covers the same 36 languages.
How accurate is it?
Mictoo uses Whisper large-v3, one of the strongest open speech recognition models. Clear speech from a close microphone gives the best result; background music, people talking over each other and heavy accents lower it. Names and specialist terms are the usual mistakes, and you can fix them in the editor before you export.
Can I edit and export the transcript?
Yes. The transcript opens in an editor in your browser, so you can correct names and terms before you copy or download it. Everyone can download TXT, TXT with timestamps and SRT subtitles. With a free account you can also export DOCX, PDF, VTT and JSON.
How long does transcription take?
A 10-minute file usually takes 15 to 30 seconds, and a 60-minute podcast about a minute. Mictoo is free and runs on a limited daily transcription budget, so at busy times your file joins a queue instead of starting straight away. You keep your place and see your position and an estimated wait.
What file formats does Mictoo support?
MP3, MP4, WAV, M4A, OGG, WEBM, FLAC, AAC, MOV and MPEG. Both audio and video files work; for video we use the audio track.
What technology powers Mictoo?
Speech recognition runs on OpenAI's Whisper large-v3, served by Groq. If Groq is unavailable, backup providers take over: Replicate, Deepgram and OpenAI. AI summary, translation and chat run on OpenAI's GPT-4o-mini over the transcript text, not the audio.