Free tool · No sign-up

Audio to text

Drop any audio file and get clean text with timestamps — in 25 languages.

Drop an audio file .mp3, .m4a, .wav, .ogg, .opus, .aac, .flac

First 2 minutes free, any lengthLanguage detected automaticallyUp to 100 MB

Longer than 2 minutes?You get the first 2 minutes here. Kalpa transcribes the rest — free to start on iPhone Get the app ›

How do you convert audio to text for free?

You can convert audio to text for free by dropping your audio file above — MP3, M4A, WAV, OGG and most other formats work. Kalpa detects the language and returns the text with timestamps. The first 2 minutes of any file are free here, with no sign-up; the rest of a longer recording is in the Kalpa app.

Short ones here, long ones in Kalpa

First 2 min · free herevoice-recording.m4a1:05English · detected

0:00: Okay, quick recap before I forget the details.
0:09: The venue can take forty people, but only if we book by the twelfth.
0:27: The catering quotes are in the shared folder, the second one is cheaper.
0:48: Next step: confirm the date with everyone by Thursday.

Keep it, search it, ask about it laterSave to Kalpa ›

How to convert audio to text

Choose your file
From your computer, phone or cloud folder.
Drop it above
Most audio formats work as they are.
Get the text
With timestamps, in the original language.
Copy, download or keep
.txt download, or keep it in Kalpa.

Faster in the app

Every recording you made, finally readable

Lectures, meetings and ideas sit in folders as audio nobody replays. Turn each file into text you can skim, copy and keep, in any of 25 languages.

Download on the App Store

Good to know

Clear speech and one voice at a time give the best results.
For longer files, the first 2 minutes are free here and the rest is in Kalpa.
No need to convert formats first.

What people convert audio to text for

Notes from recordings

Lectures, meetings and ideas you recorded.

Content

Turn talks and podcasts into articles.

Records

Interviews and calls, kept as text.

When the free tool is enough — and when you need Kalpa

	Free web tool	Kalpa app
Length	First 2 minutes of any recording	The whole recording, no limit
Summary, quotes and topics	—	Yes
Search everything you saved	—	Ask in chat, jump to the moment
Your own recordings	Upload a file	Record on iPhone or Apple Watch, transcribed on device
Languages	25, detected automatically	25, detected automatically

Questions and answers

Is audio to text really free?

Kalpa transcribes the first 2 minutes of any audio file for free, with no sign-up; the rest of a longer file is in the Kalpa app, which is free to start.

Which audio formats can I convert to text?

The audio to text tool accepts MP3, M4A, WAV, OGG, OPUS, AAC, FLAC, AMR and CAF files up to 100 MB.

How accurate is audio to text transcription?

Audio to text accuracy is very good on clear speech, while background noise and people talking over each other reduce it.

Does Kalpa detect the language of my audio?

Kalpa detects the spoken language of your audio automatically and supports 25 languages, including English, Spanish, German, French and Polish.

What happens to my audio file after it’s transcribed?

Your audio file is deleted right after the transcript is made; the text is kept for 24 hours so the same recording isn’t processed twice, then deleted, and Kalpa does not use it to train models.

Video to text MP3 to text M4A to text Voice memo to text Voice message to text Speech to text

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Everything you hear and say, remembered

Kalpa keeps what you watch, say and think in one place you can talk to. Free to start on iPhone and Apple Watch.