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Free WhatsApp voice note converter
WhatsApp audio to MP3, voice notes that play almost anywhere
Have a voice message saved as an .opus file that your player will not open? Open it here and save it as an MP3, an M4A or a WAV on your device. Nothing is uploaded, which matters for a message meant only for you.
- Opens .opus and .ogg voice messages
- MP3, M4A or WAV, ready in seconds
- The message never leaves your device
Convert only part of the message
Type a time like 1:05.5 or 65.5, drag the handles, or play the sound and use the current position.
Keep this tab open until it finishes.
How to convert a WhatsApp voice message to MP3
Export the message from WhatsApp
Export the chat with its media, as shown below, and find the voice message among the exported files, such as one ending in .opus.
Open it here
Tap Choose an audio file and pick the .opus file. You can play it right away to check it is the right one.
Keep MP3 at 64 kbps
That is plenty for a voice. Choose M4A or WAV instead if the app you will use asks for it.
Download the MP3
Press Make the MP3, then Download. It plays in nearly any player.
Want only part of a message, or a quiet one louder? Audio cutter or Increase video volume.
Get the voice message out of WhatsApp
WhatsApp's help pages describe exporting a chat with its media, which is how voice messages leave the app as files (WhatsApp Help Center):
| Where | What to tap | What you get |
|---|---|---|
| Android | Open the chat, tap More options, then More, then Export chat, and choose Include media. Pick where to send it, such as Quick Share or Gmail. | The chat as text, with the most recent media sent as attachments |
| iPhone | Open the chat, tap the contact or group name, then Export chat, and choose With all media or With selected media. Pick Save to Files. | A ZIP file with the chat and the media you chose; view once messages are left out |
| WhatsApp Web | Export chat is there too, but WhatsApp says media is not included. | Text only, no voice messages |
On an iPhone, open the ZIP in the Files app to see the voice messages inside, then choose one here. WhatsApp notes that the export is a text file, not a backup, so it cannot be imported back into WhatsApp.
What format WhatsApp voice messages are in
Meta's developer documentation for WhatsApp says voice messages are Ogg files encoded with the Opus codec (Meta for Developers). Opus is a sound format built for speech as well as music, from 6 to 510 kbps (MDN), and the IETF standard for Opus in an Ogg file recommends the .opus name and the audio/ogg media type (RFC 7845). A voice message may end in either .opus or .ogg, and this page opens both.
Some players, car stereos and apps open MP3 but not Opus, so there the message looks broken even though it is fine. In our test, a 25-second voice message in Opus at 21 kbps (64 KB) became a 64 kbps mono MP3 of about 200 KB in a third of a second.
Which quality to pick for a voice
A voice message holds little detail to begin with, so a low MP3 bitrate keeps it clear and small. A one-voice message stays mono, so all of the bitrate goes to that one voice:
| Choice | Per minute | A 5-minute message | Good for |
|---|---|---|---|
| MP3, 64 kbps (the start) | 0.48 MB | 2.4 MB | Voice messages and calls |
| MP3, 96 kbps | 0.72 MB | 3.6 MB | A voice with music behind it |
| MP3, 128 kbps | 0.96 MB | 4.8 MB | Songs shared as voice messages |
| WAV, mono | 5.76 MB | 28.8 MB | Transcription or editing apps that ask for WAV |
Choosing 320 kbps makes the file five times bigger than 64 kbps without making the voice any clearer. WAV is bigger still because nothing is compressed: Opus sound is decoded at 48 kHz, and the WAV stores every sample of it.
Private messages stay private
Voice messages are often personal. This page converts them inside your browser: the file is not uploaded to uncrop.si or anywhere else, and a line under the download counts every request the page has sent with data since you added your file, so you can check.
The MP3 is written without tags, so no title, date or comment from the original travels with it. If the voice is someone else's, ask them before you share it further.
Several messages, or a long or quiet one
The converter takes one file at a time. For a handful of messages, open each one in turn: a minute of voice takes well under a second. To keep only a few words from a long message, open Convert only part of the message and set a start and an end.
A message recorded far from the phone can be hard to hear. Increase video volume opens .opus files too and raises the voice with a limiter, keeping the format, so you can make it louder there and then convert it here.
Which phones and browsers can do it
Decoding Opus needs sound decoding on the device (WebCodecs), which Chrome and Edge have from version 94, Samsung Internet from 17, Firefox on computers from 130 and Safari from 26 (caniuse, WebKit). Firefox for Android does not have it. If your browser cannot decode the message, the tool says so before it starts.
Questions
Why won't my WhatsApp audio play?
If the voice message is an .opus file, your player may not open Opus sound. Converting it to MP3 here makes it play almost anywhere.
How do I save a WhatsApp voice message as a file?
Export the chat with its media: on Android choose Include media, on an iPhone choose With all media and Save to Files. The voice messages come out as files you can open here.
What format are WhatsApp voice messages?
Meta's developer documentation says voice messages are Ogg files with Opus sound. The IETF standard recommends the .opus name for such files, and some come as .ogg; this page opens both.
Is it safe to convert private voice notes here?
Yes. The message is converted inside your browser and never uploaded, and the line under the download shows what the page has sent.
Can I convert WhatsApp audio on an iPhone?
Yes, in Safari 26 or later. Save the exported ZIP to Files, open it, then choose the voice message here. The MP3 lands in Downloads in Files.
Can I convert WhatsApp audio to WAV?
Yes. Choose WAV for a transcription or editing app that asks for it. It is uncompressed, so a minute of a mono voice takes about 5.8 MB.
Does WhatsApp know I converted a message?
This page does not contact WhatsApp at all. It only reads the file you choose, on your device.
Sources: WhatsApp Help Center, How to export your chat history, Meta for Developers, WhatsApp Cloud API audio messages, IETF, RFC 7845: Ogg Encapsulation for the Opus Audio Codec, MDN, Web audio codec guide, caniuse, WebCodecs API, WebKit, WebKit features in Safari 26.0
Open-source code this tool runs on your device: Mediabunny (MPL-2.0), unmodified, reads and writes the video and audio files; LAME (LGPL, source at SourceForge), the MP3 encoder (version 3.100), built without its decoder for the browser by @mediabunny/mp3-encoder (MPL-2.0) and loaded only when the new file is an MP3; FFmpeg AAC encoder (LGPL-2.1 or later, source at ffmpeg.org), built without any GPL part for the browser by @mediabunny/aac-encoder (MPL-2.0), loaded only where the browser has no AAC encoder of its own.
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