Free tool · No sign-up

Lecture to text

Record the class, get notes you can actually revise from — and ask questions before the exam.

Drop a lecture recording .m4a, .mp3, .mp4 — or record

First 2 minutes free, any lengthLanguage detected automaticallyFirst 2 min free

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 transcribe a lecture recording?

To turn a lecture to text, record it on your phone (ask your lecturer first), then drop the file above, up to 100 MB. The first 2 minutes of any lecture are free here, and the page shows how much is left. The full lecture transcript is in Kalpa on your iPhone.

Short ones here, long ones in Kalpa

First 2 min · free hereLecture recording, clip1:46English · detected

0:00: Elasticity tells us how much demand changes when the price changes.
0:14: If a small price increase makes demand drop a lot, we call it elastic.
0:33: Think of airline tickets on a route with three competitors.
0:58: Inelastic goods are the opposite — insulin, petrol in the short run.
1:31: Write this down, it’s on the exam: elasticity equals percent change in quantity over percent change in price.

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

How to turn a lecture into notes

Ask to record
Many universities require permission.
Record the class
In Kalpa, Voice Memos, or any recorder. Sit near the front.
Transcribe it
The first 2 minutes here; the rest in Kalpa.
Revise from it
Summaries, topics, and a chat that knows the course.

Faster in the app

A semester of lectures you can search

Record each class in Kalpa on your iPhone or Apple Watch and every lecture becomes text, so before the exam you can find the moment a definition was given.

Download on the App Store

Good to know

Sit close to the speaker or put your phone near the lectern.
Kalpa can record from your Apple Watch — no phone on the desk.
Lectures in Croatian, German, Polish and 22 more languages are supported.

Why students transcribe lectures

Exam revision

Search a whole semester for “definition of elasticity”.

Focus in class

Listen instead of typing every word.

Studying in a second language

Read what you didn’t catch.

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 lecture transcription free?

The first 2 minutes of any lecture recording are free here, and the full lecture is in the Kalpa app, which is free to start.

Is it legal to record lectures?

Rules for recording lectures vary, so ask your lecturer or check your university’s policy first.

How large can a lecture recording be?

The web tool accepts lecture files up to 100 MB; for a full class, record straight into Kalpa on your iPhone.

Can I record a lecture with my Apple Watch?

Kalpa can record a lecture from your Apple Watch, so your phone doesn’t have to sit on the desk.

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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.