About Audio to Text Converter
This audio to text converter opens in file mode with audio files only, so you can drop an MP3, WAV, M4A or OGG recording and transcribe it. It is free, needs no sign-up and runs in your browser, so nothing you enter is uploaded.
The audio is decoded on your device to 16 kHz mono, which is the format Whisper reads, then transcribed in 30 second windows. Nothing is uploaded; only the Whisper model files download from Hugging Face, after you confirm.
Interviews, lectures, voice notes and meetings work best when the speech is clear. For several speakers the tool does not label who is talking, so you will see one running transcript.
How to use Audio to Text Converter
- Choose Audio or video file, or Microphone.
- For a file, drop it on the box, tap to choose it, or paste it. For the microphone, press Start recording and Stop recording when you are done.
- Pick the model (Tiny or Base), the spoken language, and turn on Translate to English if you want English text.
- Press Download model, confirm, and wait for it to load. This is needed once per visit; your browser may keep the file.
- Press Transcribe. Long audio takes longer than short audio, and a computer with WebGPU is faster than a phone.
- Read the transcript, then switch between Text, SRT and VTT and press Copy or Download.
Features
- Whisper tiny and base, multilingual, in your browser.
- Microphone recording, or any audio or video file your browser can decode.
- Language choice including Bangla, English, Hindi, Arabic, Urdu and more, or automatic detection.
- Translate to English with the Whisper translate task.
- Timestamps for every phrase, shown in the list.
- Export as TXT, SRT subtitles or WebVTT.
- Long audio in 30 second windows with a 5 second overlap, up to 60 minutes.
- Model size and licence shown before the download, with a confirm step.
Privacy: how it works
- Your audio and video are decoded and transcribed in your browser. They are never uploaded to Ulkaa or to anyone else, and a microphone recording stays in the tab.
- One download is needed: the Whisper model files come from Hugging Face the first time you confirm. That request does not include your audio.
Tips
- Record close to the microphone in a quiet room. Clean audio changes the result more than the model choice.
- Set the spoken language when you know it. Automatic detection can guess wrong on short clips.
- Use Base if you can wait a little longer and the audio is not English.
- For subtitles, check the timing against the video, because the timestamps are per phrase, not per word.
Frequently asked questions
Is it really free?
Yes. There is no price, no trial and no credit card. Ulkaa Tool does the work with your own device, so there is no server bill to pass on to you.
Do I need an account?
No. There is no sign-up and no login. Open the page and use it. An Ulkaa account is not needed for anything on this tool.
Does it run in my browser?
Yes. Your audio are processed by code running in your browser tab, on your own device.
Is my data uploaded?
No. Your audio are never sent to Ulkaa or to anyone else. You can check this yourself by watching the Network tab in your browser developer tools while you use the tool.
Which audio formats can I use?
Any format your browser can play, usually MP3, WAV, M4A, OGG and WebM audio.
Does it tell speakers apart?
No. The transcript is one running text with timestamps and does not label speakers.
More Speech to Text Online pages
- Speech to Text OnlineTranscribe a recording, a video or your microphone with Whisper, then save the text or subtitles.
- Video to Text ConverterChoose a video and transcribe what is said in it.
- Voice to Text OnlineRecord your voice and turn it into text.
- Transcribe Bangla AudioTurn Bangla speech into text, and read the result carefully.
- Speech to Text With Subtitles (SRT)Transcribe a recording and download it as SRT or VTT subtitles.