Free tool · No sign-up

Voice message to text

Read any voice note in seconds — from WhatsApp, Telegram, iMessage, Viber or Signal.

Drop a voice message .opus, .ogg, .m4a, .mp3, .aac or .caf

First 2 minutes free, any lengthLanguage detected automaticallyAny messenger

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 a voice message to text?

To convert a voice message to text, save the voice note from your messenger as an audio file, then drop it above. Kalpa detects the language and returns timestamped text in seconds. The first 2 minutes of any voice message are free here; the rest is in Kalpa.

Short ones here, long ones in Kalpa

First 2 min · free hereVoice message1:34English · detected

0:00: Hi! Quick one — I land at 6:40, not 5, the flight got moved.
0:09: Can you pick me up at Terminal 2? If not, I’ll take the bus, no stress.
0:24: Also, Mum asked if we’re still doing lunch on Sunday. I said yes, one o’clock.
0:47: And bring the charger I left at yours, the white one.
1:21: Okay, boarding now. Love you, see you tonight.

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

How to turn a voice note into text

Find the voice note
In WhatsApp, Telegram, iMessage, Viber or Signal.
Save or share it
Each app has its own way — see the app’s page below.
Drop the file above
.opus, .ogg, .m4a and .mp3 all work.
Read, copy or keep
Copy the text, or keep it in Kalpa to search later.

Faster in the app

Turn chat voice notes into text you can copy

Addresses, times and plans buried in a voice note become timestamped text. Copy it into a reply or download it as a .txt file.

Download on the App Store

Good to know

WhatsApp and Telegram save voice notes as .opus or .ogg — both work here.
For longer voice notes, the first 2 minutes are transcribed here; the rest is in Kalpa.
Several speakers in one voice note are transcribed as one block of text.

Why people read voice notes instead of playing them

In a meeting or on a train

Read it now, reply now — no headphones needed.

Long rambles

Get to the question in a 6-minute voice note in seconds.

Keeping details

Addresses, times and numbers you’d otherwise replay five times.

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 converting a voice message to text free?

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

Which voice message file types work?

Kalpa accepts voice message files such as .opus, .ogg, .m4a, .mp3, .aac, .caf and .wav, up to 100 MB.

Which messengers’ voice notes can I convert to text?

Kalpa works with voice notes from WhatsApp, Telegram, iMessage, Viber, Signal and other messengers, as long as you can save the message as an audio file.

Can Kalpa tell who is speaking in a voice note?

Kalpa doesn’t label speakers, so a voice note with several voices comes back as one block of timestamped text.

Is my voice note stored?

Kalpa deletes your voice note’s audio right after the transcript is made, keeps the text for 24 hours so the same recording isn’t processed twice, then deletes it, and never uses it to train models.

WhatsApp voice message to text Telegram voice message to text iMessage audio message to text Viber voice message to text OGG and OPUS to text Voice memo to text

See all free tools

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.