Turn a WhatsApp voice message into text online

To turn a WhatsApp voice message into text online, export the audio from the chat and upload it to sAInote, an AI voice-to-text app that reads WhatsApp's .opus and .ogg files directly — there is no conversion step first. Pick Quick Note for a word-for-word transcript, or Smart Summary for a cleaned, structured version with filler removed and facts unchanged. Recordings up to 20 minutes are processed immediately on every plan, and uploads can be up to 64 MB. sAInote is not connected to WhatsApp in any way: you export the file yourself and upload it.

Upload a voice message No account needed to try. Guests get 15 minutes of audio, one time.

What an exported voice message gets you

Opus and OGG go in as they are: WhatsApp exports voice messages as .opus, sometimes .ogg. Both upload directly. So do WAV, MP3, M4A, MP4 and WebM, up to 64 MB per file. No converter, no re-encoding, no renaming the extension.
Verbatim or cleaned up: Quick Note returns the transcript word for word, nothing added or removed. Smart Summary removes filler, repairs half-finished sentences and adds paragraphs, headings and lists, while leaving the facts as spoken. Both are available on every plan.
Read it in another language: Edit & Translate works in Smart Summary mode and handles roughly 35 target languages in a single pass. It translates the cleaned, edited text rather than the raw transcript, and remembers the language you chose for next time.
Long voice messages survive intact: Long recordings get speaker separation and chunked summarisation, so points made at the end are covered as fully as the opening. Files from 20 minutes to 2 hours are processed in the background on Pro.
A history you can search: Signed-in users keep every note across web, iPhone, iPad and macOS, and search matches both the raw transcript and the processed text. Translated notes carry a badge. Guests get no history at all.
Your own saved instruction: Pro Assistant lets you write and save one instruction — a format, a tone, a checklist of what to pull out — and apply it to any recording, including exported voice messages. Pro plans only.

How to convert a WhatsApp voice message to text

1

Export the audio from the chat

Open the voice message in WhatsApp and use its share or export option to send the audio file somewhere you can reach: email it to yourself, save it to Files or a drive, or forward it to another app.
2

Find the file

Look for a file ending in .opus, or sometimes .ogg. That is the voice message itself. Leave the extension alone and do not run it through a converter first.
3

Open sAInote

Go to sainote.com in any browser, or open the iPhone, iPad or macOS app. Signing in is passwordless: a 6-digit emailed code, a magic link, or Sign in with Apple or Google.
4

Upload and choose a mode

Add the file, then pick Quick Note for the exact words or Smart Summary for a cleaned, structured version. In Smart Summary you can also switch on Edit & Translate and choose a target language.
5

Read, copy or keep it

The text appears once processing finishes — immediately for anything up to 20 minutes. Signed in, it is saved to your searchable history; as a guest, copy it out before you leave.

WhatsApp already transcribes voice messages, so when is exporting worth it?

Recent versions of WhatsApp include their own voice-message transcription, built into the chat. If you only want to skim a short message without leaving the app, use it. It is faster than exporting anything, and there is no sense in pretending otherwise.

Exporting the file is worth the extra step in specific situations. When you want the message cleaned up and structured rather than raw — headings, paragraphs, filler stripped out — instead of a wall of spoken words. When you want it in a different language, which Edit & Translate handles in the same pass as the edit. When you want your own saved instruction applied every time, using Pro Assistant. When the message needs to live somewhere you can search later, alongside your other notes, rather than scrolling back through a chat. When the voice message is long: sAInote handles up to 2 hours per recording. And when the built-in feature simply is not there for you, because availability depends on your app version, your device and the language spoken.

sAInote has no WhatsApp integration, plugin, bot or automation, and never will pretend to. You export a file, you upload a file. That is the whole connection.

Why .opus and .ogg matter more than they should

WhatsApp encodes voice messages as Opus audio, usually in a file ending .opus and occasionally .ogg. It is an efficient format for sending speech over a phone network, and an awkward one for most transcription tools, which expect MP3 or WAV. That is why so many guides on this topic open with a conversion step: run the file through a converter, wait, download an MP3, then upload that.

sAInote accepts .opus and .ogg as uploads, so that step disappears. The full accepted set is WAV, MP3, M4A, MP4, WebM, OGG and Opus, with a maximum upload size of 64 MB per file.

Skipping conversion is not only faster. Every re-encode is another chance for something to go wrong — a converter that mangles the sample rate, a silent failure that produces a file of the right length and the wrong content, an upload that gets rejected without saying why. Sending the original file the phone produced removes that whole category of problem, and keeps your voice message off a third-party conversion site along the way.

What you get when you convert a WhatsApp voice message to text online

There are three processing modes, and the difference between them is worth understanding before you upload.

Quick Note gives the verbatim transcript: every word as spoken, nothing added, nothing removed. Use it when the exact wording matters — a price someone quoted, an address, a promise you want on record. Smart Summary is edited: filler and false starts come out, broken sentences are repaired, and the text gets paragraphs, headings and lists so a rambling four-minute message reads as something structured. The facts stay as they were spoken. Both modes are available on every plan, guests included.

Pro Assistant is the third mode and is Pro only. You write one instruction — pull out action items, format it as a client update, keep only the dates and numbers — save it, and apply it to any recording afterwards.

Pro accounts also get Special Names, a personal spelling glossary. You add the names of colleagues, clients, products or jargon that keep coming out wrong, and they are spelled correctly rather than guessed at by sound. It only affects spelling; it never rewrites what was said and never adds words.

Limits, what it costs in minutes, and where your audio goes

Usage is measured in minutes of audio, not per file or per message. A 3-minute voice message costs 3 minutes in any mode. Guests get 15 minutes, one time, with no account, and no history. A free account also gets 15 minutes, one time rather than monthly, and does keep a searchable history. Pro gets 360 minutes — 6 hours — every month, all three modes, Special Names, long-recording handling and priority support.

The length limits are firm. Up to 20 minutes is processed immediately on every plan. From 20 minutes to 2 hours is processed in the background and is Pro only. Two hours is the hard cap per recording; anything longer is rejected rather than truncated. Uploads max out at 64 MB.

Uploaded audio sits in private cloud storage. It is never public, never indexed, never shareable by URL, and is cleaned up on a schedule after processing. The interface itself comes in 11 languages — Arabic, Bengali, English, French, Hindi, Portuguese, Russian, Simplified Chinese, Spanish, Turkish and Urdu, with Arabic and Urdu rendering right to left — while speech recognition covers considerably more. Accounts can be deleted in the app, which anonymises the data.

Questions about WhatsApp voice notes and sAInote

How do I turn a WhatsApp voice message into text online?

Export the voice message from the chat using WhatsApp's share option, then upload the resulting file to sainote.com or the iPhone, iPad or macOS app. Choose Quick Note for the exact words or Smart Summary for a cleaned, structured version. Nothing is installed and no conversion step is needed.

Doesn't WhatsApp already transcribe voice messages?

Yes, recent versions of WhatsApp have a built-in voice-message transcription feature, and for a quick skim inside the chat it is the fastest option. Exporting to sAInote makes sense when you want the message cleaned up and structured, translated, saved in a searchable history, longer than the built-in feature handles, or when that feature is not available on your version, device or language.

Do I need to convert .opus to MP3 first?

No. sAInote accepts .opus and .ogg files exactly as WhatsApp exports them, along with WAV, MP3, M4A, MP4 and WebM. The maximum upload size is 64 MB. Skipping the converter saves time and avoids the re-encoding failures that produce silent or garbled files.

Is sAInote connected to WhatsApp?

No. There is no WhatsApp integration, plugin, bot or automation, and sAInote does not read your chats or join anything. You export an audio file from the conversation yourself and upload it, exactly as you would upload any other recording. The two apps have no link.

How long can a WhatsApp voice message be?

Up to 20 minutes is processed immediately on every plan. From 20 minutes to 2 hours is processed in the background and requires Pro. Two hours is the hard cap per recording and anything longer is rejected. The upload size limit is 64 MB regardless of length.

Is it free to transcribe a WhatsApp voice note?

You get 15 minutes of audio free as a guest, one time, with no account. A free account also gets 15 minutes one time, not monthly, but keeps a searchable history. Pro gives 360 minutes every month. A 3-minute voice message costs 3 minutes of your allowance in any mode.

Can I get a voice message translated into another language?

Yes, using Edit & Translate, which is available in Smart Summary mode only and covers roughly 35 target languages. It edits and translates in one pass, so you get the cleaned, structured text in your chosen language rather than a raw transcript run through a translator. The language you pick is remembered.

Can I do this on Android?

There is no Android app and no browser extension. Use the sAInote web app in your phone's browser at sainote.com — it runs on the page with nothing to install. Native apps exist for iPhone, iPad and macOS, and the macOS app adds a global Quick Capture hotkey.

Is my uploaded audio private?

Audio is held in private cloud storage: never public, never indexed, never shareable by URL, and cleaned up on a schedule after processing. Signed-in notes stay in your own history and are not shared. You can delete your account in the app, which anonymises the associated data.

Start with one voice message

Export the message you have been putting off listening to, drop the .opus file in, and read it instead. Guests get 15 minutes of audio, one time, with no account and no card.

Upload a voice message