Free tool · No sign-up

OGG and OPUS to text

The format messengers use for voice notes — transcribed without converting.

.ogg, .oga, .opus
First 2 minutes free, any lengthLanguage detected automaticallyVoice notes
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 an OGG or OPUS file to text?

To convert OGG to text, drop the .ogg or .opus file above as it is — no converting to MP3. Messengers like WhatsApp, Telegram and Discord often save voice messages in these formats. Kalpa returns text with timestamps in seconds. The first 2 minutes of any file are free here; the rest is in Kalpa.

Short ones here, long ones in Kalpa

First 2 min · free hereaudio-message.opus0:47English · detected
0:00
Hey, it is me. The parcel arrived, but the box was damaged.
0:11
The lamp itself looks fine, I checked it.
0:24
I will send you a photo later tonight.
0:41
Talk tomorrow!
Keep it, search it, ask about it laterSave to Kalpa ›

How to transcribe OGG and OPUS

  1. Find the file

    Saved from WhatsApp, Telegram or Discord.

  2. Drop it above

    No conversion needed.

  3. Get the text

    Timestamps included.

  4. Keep it

    Download or keep it in Kalpa.

Faster in the app

Voice notes you can read instead of replay

Long voice notes from WhatsApp, Telegram or Discord are hard to replay in a meeting or on the bus. Drop the saved .ogg or .opus and read what was said.

Download on the App Store

Good to know

  • WhatsApp voice notes often save as .opus and Telegram’s as .ogg.
  • Many players can’t open .opus — you don’t need to.
  • For long voice notes, the first 2 minutes are free here; the rest is in Kalpa.

Where OGG and OPUS files come from

WhatsApp

Exported voice notes.

Telegram

Voice messages saved from Desktop.

Discord

Voice message attachments.

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

Free web toolKalpa app
LengthFirst 2 minutes of any recordingThe whole recording, no limit
Summary, quotes and topics—Yes
Search everything you saved—Ask in chat, jump to the moment
Your own recordingsUpload a fileRecord on iPhone or Apple Watch, transcribed on device
Languages25, detected automatically25, detected automatically

Questions and answers

Can I transcribe an .opus file my player won’t open?

Yes, the OGG to text tool transcribes .opus files even if your media player can’t play them.

Do I need to convert OGG to MP3 first?

No, Kalpa transcribes .ogg, .oga and .opus files as they are.

Why are voice messages saved as OGG or OPUS?

Opus is a compact audio codec designed for voice, which is why many messengers use it for voice notes, often inside an .ogg file.

How much of a long voice note is free?

Kalpa transcribes the first 2 minutes of any OGG or OPUS voice note for free; the rest is in the Kalpa app, which is free to start.

What happens to my voice message after it’s transcribed?

Your voice message audio 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.

WhatsApp voice message to text Telegram voice message to text Discord voice message to text Voice message to text Audio to text MP3 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.

Download on the App Store
No 2-minute limit in KalpaGet the app