Why Voice Messages Are Opus Files
WhatsApp saves voice messages with the Opus codec. Telegram uses the same codec, wrapping Opus audio inside an OGG container. Both apps chose Opus for the same reason: it keeps speech clear at very low bitrates, usually a few tens of kbps.
At these bitrates, a one-minute voice message is only about 100–200 KB. At 128 kbps, the same minute in MP3 is 960 KB, several times larger. For messaging apps serving billions of users on mobile networks, this efficiency is critical — it reduces bandwidth costs, speeds up delivery, and saves storage on users' phones.
The downside is compatibility. While Opus plays perfectly inside WhatsApp and Telegram, trying to play an .opus or .ogg file outside the app often fails. Most car stereos, basic media players, and older devices simply do not recognize Opus. Converting to MP3 solves this instantly. For the full trade-off, read our comparison of Opus vs MP3 quality and compatibility.
Quick fact: both apps store voice messages as Opus audio in an OGG container. The file ends in .opus or .ogg; the converter here accepts both.
How to Find Voice Messages on Android
WhatsApp (Android)
WhatsApp stores voice messages in a specific folder on your device. The exact path depends on your Android version:
- Android 10 and earlier: Open any file manager and navigate to
Internal Storage/WhatsApp/Media/WhatsApp Voice Notes/. Voice messages are organized into date-based subfolders (e.g.,202603/). - Android 11+: WhatsApp moved to scoped storage. The new path is
Android/media/com.whatsapp/WhatsApp/Media/WhatsApp Voice Notes/. You may need a file manager like Files by Google or Solid Explorer to access this directory.
Each voice message is an .opus file named with a timestamp. Individual voice notes sent to you are in the WhatsApp Voice Notes folder, while audio messages recorded in chats may also appear in WhatsApp Audio.
Telegram (Android)
Telegram voice messages are stored in Internal Storage/Telegram/Telegram Audio/. Alternatively, you can long-press a voice message in any chat and tap Save to Downloads to copy it to your Downloads folder as an .ogg file.
How to Find Voice Messages on iPhone
WhatsApp (iPhone)
iOS does not allow direct file system access to WhatsApp's storage. Instead, use one of these methods:
- Forward to Files: Long-press the voice message in the chat → tap Forward → tap the Share icon → select Save to Files. The
.oggfile is now in your Files app. - Email to yourself: Long-press → Forward → Share → Mail. Send it to your own email, then download the attachment on any device.
- Share to CleverUtils: Long-press → Forward → Share → open in Safari and go to cleverutils.com. Upload the file directly.
Telegram (iPhone)
In Telegram, tap the voice message to open it, then tap the Share button (or the three-dot menu) → Save to Files. The file saves as an .ogg file in your chosen location.
Method 1: Convert Online (Works on Phone)
The fastest approach — works directly in your mobile browser with no app installation:
- Save the voice message to your phone using the methods described above.
- Open CleverUtils.com in Safari (iPhone) or Chrome (Android).
- Tap "Choose File" and select the
.opusor.oggfile from your Downloads or Files app. - Tap "Convert to MP3" and wait a few seconds — voice messages are tiny and convert almost instantly.
- Tap "Download MP3" to save the converted file.
The entire process takes under 30 seconds. The resulting MP3 file plays on every device, every media player, and every car stereo.
Mobile-friendly: Our converter runs in your browser and does the conversion on our server. There is nothing to install — just upload, convert, and download. Your files are encrypted during transfer and automatically deleted from our server within 2 hours.
Method 2: Desktop Tools
If you prefer to convert files on your computer:
- VLC Media Player (free, cross-platform): Open VLC → Media → Convert/Save → Add your
.oggfile → Select MP3 as output format → Start. - Audacity (free, open-source): File → Import → Audio → Select the Opus file → File → Export Audio → choose MP3. Audacity also lets you trim, amplify, or edit the audio before exporting.
- FFmpeg (command line):
ffmpeg -i voice.ogg -c:a libmp3lame -b:a 128k voice.mp3. The fastest method for batch converting many files at once.
Recommended MP3 Settings for Voice Messages
Voice messages are recorded at very low bitrates (16–32 kbps Opus), so converting to a high-bitrate MP3 offers no quality improvement — it only makes the file bigger. Why voice apps need so few bits is explained in our Opus bitrate guide for voice and music. Here are sensible settings:
| MP3 Bitrate | Quality | File Size (1 min) | Recommendation |
|---|---|---|---|
| 64 kbps | Preserves full quality | ~480 KB | Best for minimum file size |
| 128 kbps | More than sufficient | ~960 KB | Recommended default |
| 192 kbps | Overkill for voice | ~1.4 MB | No audible benefit over 128 |
| 256 kbps+ | Wasteful | ~1.9 MB | Only increases file size |
128 kbps is the sweet spot: it fully preserves the voice quality from the original Opus recording while keeping files small. Since the source material is only 16–32 kbps Opus, even 64 kbps MP3 captures everything without any loss. Going higher than 128 kbps is pointless — you cannot add detail that was never recorded.
Batch Converting Multiple Voice Messages
If you need to archive dozens or hundreds of voice messages, individual conversion becomes tedious. Here are efficient approaches:
- Online, one by one: The converter takes one file per conversion. For a handful of messages, convert them one after another; each small voice file takes only a few seconds.
- FFmpeg batch (command line): Copy all voice files to a folder and run:
for f in *.ogg; do ffmpeg -i "$f" -c:a libmp3lame -b:a 128k "${f%.ogg}.mp3"; done
This converts every OGG file in the folder to MP3 in seconds. - WhatsApp export: In WhatsApp, tap the three-dot menu in a chat → More → Export chat → Include media. This creates a ZIP archive containing all media files from the conversation, including voice messages. Unzip and batch convert the
.opusfiles.
WhatsApp vs Telegram: Voice Message Differences
| Feature | Telegram | |
|---|---|---|
| Codec | Opus | Opus |
| Container | OGG (.opus or .ogg) | OGG (.ogg) |
| Typical bitrate | Low, tuned for speech | Low, tuned for speech |
| 1-minute file size | A few hundred KB at most | A few hundred KB at most |
| File location (Android) | WhatsApp Voice Notes folder | Telegram Audio folder |
| Easy export (iPhone) | Forward → Save to Files | Share → Save to Files |
Both apps use the same codec, so the conversion process is identical. Upload the .ogg or .opus file, convert to MP3, and you are done.
Convert WhatsApp Audio to MP3 on a Windows PC or Mac
- Open WhatsApp Web in your browser and open the chat with the voice message.
- Hover over the voice message, open the small menu arrow and choose Download. The file saves as
.ogg(Opus audio). - Drag the file into the converter on this page and click Convert to MP3.
- Download the MP3. It plays in Windows Media Player, Apple Music, QuickTime and any other player.
If the download option is missing in your version, forward the voice message to yourself by email from your phone and save the attachment.